CN102721948A - Large-scene SAR deception jamming implementation method - Google Patents
Large-scene SAR deception jamming implementation method Download PDFInfo
- Publication number
- CN102721948A CN102721948A CN2012102340174A CN201210234017A CN102721948A CN 102721948 A CN102721948 A CN 102721948A CN 2012102340174 A CN2012102340174 A CN 2012102340174A CN 201210234017 A CN201210234017 A CN 201210234017A CN 102721948 A CN102721948 A CN 102721948A
- Authority
- CN
- China
- Prior art keywords
- scene
- signal
- distance
- radar
- mrow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005070 sampling Methods 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000002452 interceptive effect Effects 0.000 claims description 3
- 238000000638 solvent extraction Methods 0.000 abstract 2
- 238000003384 imaging method Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 7
- 238000004422 calculation algorithm Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005316 response function Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/021—Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/38—Jamming means, e.g. producing false echoes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
- G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a large-scene SAR (Synthetic Aperture Radar) deception jamming implementation method. The method comprises the following steps: (1) a jammer intercepts a radar signal; (2) performing partitioning treatment on a false large-scene image; (3) modulating an intercepted signal; (4) generating a deception jamming signal; and (5) forwarding the deception jamming signal. The large-scene SAR deception jamming implementation method is suitable for implementing quick and real-time deception jamming of a large-scene SAR; the deception jamming method is given into full play to adjust the false scene focusing center to the scene center, so that the image can be well focused in the SAR system of the opposite side, and the jamming deception is improved; the orientation defocusing condition of the depth of focus and the Nyquist sampling law are utilized to determine the applicable range, so that the implementation method provided by the invention has good feasibility; and the real-time performance of the deception jamming is improved through partitioning parallel modulation of large-scene images.
Description
Technical Field
The invention belongs to the technical field of signal processing, and further relates to a large-scene SAR deception jamming implementation method in the field of radar signal processing. By means of real-time deception jamming of the synthetic aperture radar SAR in a large scene, the synthetic aperture radar SAR image focusing method can obtain a good focusing effect in an imaging system of the synthetic aperture radar of the opposite side, and therefore effective deception jamming of the synthetic aperture radar is achieved.
Background
The interference techniques of SAR can be classified into press-type interference and deceptive interference. The principle of squashing is relatively simple, but the power requirements on the jammer are high. The deceptive jamming is to disturb the SAR system by simulating radar echo or echo forwarding and other modes on the basis of obtaining key parameters such as central frequency, modulation frequency, bandwidth and the like of the enemy SAR signal through reconnaissance, although the jamming principle is relatively complex and the jamming effect depends on the precision of the reconnaissance system to a great extent, the requirement on the jamming power is greatly reduced. The SAR deception jamming enables echo signals obtained by an enemy SAR system to contain deception information, so that a false jamming scene appears in an imaging result, and the tactical purposes of 'falsely and falsely' jamming effect and hiding and protecting real targets are achieved.
In the luosi, lientongsheng document, "a data multiplexing SAR spoofing interference method research" (space electronic countermeasure, volume 26, phase 3, 2010), a spoofing interference signal generation structure with a pipeline structure is proposed, in which the method analyzes the influence of the motion of an SAR carrier platform on the path delay difference according to an SAR ground target echo model and an SAR active spoofing interference model, and multiplexes the operation result by using the pipeline structure through a system response function which can be used for generating false target signals at different azimuth positions, thereby generating more signals of false target points. However, this method has the disadvantages that due to instability of the carrier motion, there is motion error in the resulting signal and the reuse of data greatly reduces the real-time nature of the spoof disturbance.
The method firstly performs image pre-generation processing on a false scene image through a fast algorithm, then convolutes the pre-generated false image with a synthetic aperture radar signal received by an interference machine, and transmits a real-time signal, so that a deceptive false scene is obtained by an opposite side radar after motion compensation and synthetic aperture radar imaging processing. However, the method has the disadvantages that a better focused image can be obtained only in a certain range, and when the false scene target deviates far from the interference machine, namely the false scene is larger, the imaging result of the deception interference image can be defocused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a large-scene SAR deception jamming implementation method. The method makes up the reduction of interference deception caused by motion errors and data reuse in the data reuse deception jamming method, and defocuses an imaging result when a false scene target deviates far from a jamming machine in the false scene SAR deception jamming technology, and even cannot image when the false scene target is serious. The large-scene SAR deception jamming implementation method fully utilizes the adjustment of the deception jamming false scene focusing center to enable the image to be well focused, discusses the application range of the method by analyzing the conditions of the focusing depth and the Nyquist sampling law, and improves the instantaneity and deception of deception jamming by adopting a block parallel processing method.
The basic idea for realizing the invention is as follows: the method comprises the steps of delaying radar signals intercepted by an interference machine to obtain signals of scene target points, conducting block parallel processing on a large scene, estimating the scene center of each sub-image module, modulating sub-image radar signals in the distance direction and the azimuth direction respectively by adjusting the position of the focus center of the scene, superposing the modulated signals and original radar signals to obtain deception interference signals, and forwarding the deception interference signals to enable a synthetic aperture radar system of the opposite side to obtain SAR images with good focus.
In order to achieve the above object, the present invention comprises the steps of:
a large-scene SAR deception jamming implementation method comprises the following steps:
(1) radar signal intercepted by jammer
1a) The jammer intercepts radar time domain signals, and performs Fourier transform on the intercepted radar time domain signals in the distance direction to obtain radar distance frequency domain signals;
1b) performing time delay processing on the radar time domain signal to obtain a radar time domain time delay signal;
(2) blocking processing is carried out on false large scene image
2a) Determining the length of a distance direction blocking unit according to the azimuth direction non-defocusing condition of the focusing depth, and dividing the total length of the distance direction of the false large scene image by the length of the distance direction blocking unit to obtain the number of distance direction blocks;
2b) determining the length of the azimuth block unit according to the Nyquist sampling law, and dividing the length of the azimuth block unit by the total length of the azimuth block unit of the large scene image to obtain the number of azimuth blocks;
2c) dividing a large scene image into M multiplied by N sub-images, wherein M is the number of distance direction blocks, and N is the number of azimuth direction blocks;
2d) setting the geometric center of each sub-image as a respective focusing center, and taking the focusing center of each sub-image as a respective scene center;
(3) modulating the intercepted signal
3a) Fourier transform is carried out on the radar time domain delay signal in the step 1b) in the distance direction to obtain a frequency domain signal of a false scene target point;
3b) defining a part determined by the amplitude of a false scene image and the instantaneous slope distance change between the false scene and a radar in a frequency domain signal of a false scene target point as a frequency domain modulation coefficient;
3c) dividing the sub-image frequency domain modulation coefficient into a pre-generation part and a real-time generation part;
3d) distance direction superposition is carried out on the pre-generated part on the same azimuth unit, and a modulation coefficient pre-generated part after distance superposition is obtained;
3e) multiplying different real-time generation parts of the azimuth units by a modulation coefficient pre-generation part after distance superposition, and superposing in the azimuth direction to obtain a modulation coefficient of the sub-image;
3f) simultaneously executing step 3c) and step 3d) on each sub-image, and performing parallel calculation in step 3e) to obtain modulation coefficients of all the sub-images;
3g) summing the modulation coefficients of all the sub-images to obtain a frequency domain modulated coefficient;
3h) multiplying the frequency domain modulated coefficient by the radar distance frequency domain signal obtained in the step 1a) to obtain a modulated distance frequency domain signal;
(4) generating a spoofed interfering signal
Performing inverse Fourier transform on the modulated distance frequency domain signal in the distance direction to obtain a time domain deception jamming signal;
(5) forwarding deceptive jamming signals
And forwarding the deception jamming signal, and obtaining the deception jamming signal superposed by the real scene radar signal and the time domain deception jamming signal by the radar of the opposite side.
Compared with the prior art, the invention has the following advantages:
firstly, the invention adopts the block parallel modulation to the large scene interference image, overcomes the defect of the prior art that the deception of interference is reduced due to data multiplexing in the data multiplexing deception interference method, and has the advantages of simple realization, high efficiency and high real-time property.
Secondly, the method adopts the condition that the focusing depth and the azimuth are not defocused and the limiting condition of the Nyquist sampling law to determine the application range of the method, overcomes the defect that the image can be well focused only in a certain range in the rapid real-time deception jamming algorithm in the prior art, and has better feasibility for realizing the method.
Thirdly, the method for adjusting the scene center position is adopted, and the defect that imaging defocusing is serious when a false scene target deviates far from an interference machine in a rapid real-time deception jamming algorithm in the prior art is overcome, so that the method has the advantages of being capable of well focusing in an imaging system of a synthetic aperture radar of the opposite side and achieving real-time and effective deception of the synthetic aperture radar.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a diagram of simulation effect of the present invention.
Detailed Description
The steps of the present invention are described in further detail below with reference to fig. 1.
Step 1: radar signal intercepted by jammer
The jammer intercepts radar time domain signals to obtain radar signal data with distance as a row vector and orientation as a column vector, and the intercepted radar time domain signals are subjected to Fourier transform in the distance direction to obtain radar distance frequency domain signals; delaying radar time domain signals
A time unit of which Δ RmObtaining a radar time domain delay signal for the distance difference between a scene target point m and the distance from the jammer to the airborne platform, and c is the speed of light:
wherein,in order to be the scene target point signal,
for a fast time, tmIn the case of a slow time, the time,
in order for the radar signal to be intercepted by the jammer,
is a convolution symbol, sigma (x, y) is the reflection coefficient of the false scene point, (x, y) is the position of the scene target point, delta (t) is an impulse function,for all time,. DELTA.R (t)m) The distance difference between the scene target point and the jammer to the airborne platform is shown, and c is the speed of light.
Step 2: blocking processing is carried out on false large scene image
Determining a range-direction block unit according to a focusing depth and azimuth non-defocusing condition, wherein the range-direction block unit has the length ofWhere | y | is the range block unit length, λ is the radar signal wavelength, RsFor the vertical distance of the jammer to the carrier platform, TaBeing aerial carrierAnd (4) synthesizing aperture time, v is the speed of the carrier, and dividing the total distance length of the large scene image by the distance blocking unit length to obtain the number of distance blocks.
Determining the azimuth block unit according to the Nyquist sampling law, wherein the unit length is
Where | x | is azimuth unit length, λ is radar signal wavelength, RsThe vertical distance from the jammer to the carrier platform is obtained, PRF is pulse repetition frequency, v is carrier speed, D is the real aperture length of the carrier antenna, L is the synthetic aperture length of the carrier antenna, and the azimuth block number is obtained by dividing the azimuth total length of the large scene image by the azimuth block unit length.
And dividing the large scene image into M multiplied by N block subimages, wherein M is the number of distance direction blocks, and N is the number of azimuth direction blocks. And setting the geometric center of each sub-image as the respective focusing center, and taking the focusing center of each sub-image as the respective scene center.
And step 3: modulating the intercepted signal
Fourier transform is carried out on the radar time domain delay signal in the step 1 in the distance direction to obtain a frequency domain signal of a false scene target point:
wherein, s'r(fr，tm) Frequency domain signal of scene object, frIs the distance frequency, tmIs a slow time, sr(fr，tm) For radar frequency domain signals intercepted by a jammer, sigma (x, y) is the reflection coefficient of a false scene point, (x, y) is the position of a scene target point, exp represents the bottom of an exponential function, j is an imaginary unit, RsThe vertical distance, v (t), of the jammer from the carrier platformm) Is the speed of the carrier, c is the speed of light, ycIs the vertical coordinate of the center of the sub-image scene.
Defining a part determined by the amplitude of the false scene image and the instantaneous slope distance change between the false scene and the radar in the frequency domain signal of the false scene target point as a frequency domain modulation coefficient:
wherein, sigma (x, y) is the reflection coefficient of the false scene point, (x, y) is the scene target point position, exp represents the bottom of the exponential function, j is the imaginary unit, frIs the distance frequency, RsIs the vertical distance from the jammer to the carrier platform, c is the speed of light, tmIs a slow time, v (t)m) As the speed of the carrier, ycIs the vertical coordinate of the center of the sub-image scene.
Dividing the frequency domain modulation coefficient of the sub-image into a pre-generation part and a real-time generation part, wherein the pre-generation part is a part determined by the position of a false scene target point relative to an interference machine and the distance relative to a scene center in the frequency domain modulation coefficient; the real-time generation part refers to a part of the frequency domain modulation coefficient related to slow time and radar platform motion parameters:
and the distance direction superposition is carried out on the pre-generated part on the same azimuth unit, and a modulation coefficient pre-generated part after the distance superposition is obtained:
where, Σ is a summation symbol, (x, y) is a scene target point position, σ (x, y) is a reflection coefficient of a false scene point, exp represents the bottom of an exponential function, j is an imaginary unit, frIs distance frequency, c is speed of light, RsIs the vertical distance of the jammer to the carrier platform.
Multiplying different real-time generation parts of the azimuth units by a modulation coefficient pre-generation part after distance superposition, and superposing in the azimuth direction:
where Σ is the sum sign, exp tablesIndicating the base of the exponential function, j being the unit of an imaginary number, frAs distance frequency, (x, y) as scene target point position, v (t)m) As the speed of the carrier, tmIs slow time, c is speed of light, RsIs the vertical distance of the jammer to the carrier platform, ycAnd obtaining the modulation coefficient of the sub-image for the vertical coordinate of the scene center of the sub-image.
And performing parallel calculation on each sub-image to obtain the modulation coefficients of all the sub-images. And summing the modulation coefficients of all the sub-images to obtain the frequency domain modulated coefficient. Multiplying the frequency domain modulated coefficient with the radar distance frequency domain signal obtained in the step 1 to obtain a modulated distance frequency domain signal.
And 4, step 4: generating a spoofed interfering signal
And carrying out inverse Fourier transform on the modulated distance frequency domain signal in the distance direction to obtain a time domain deception jamming signal.
And 5: forwarding deceptive jamming signals
And forwarding the deception jamming signal, and obtaining the deception jamming signal superposed by the real scene radar signal and the time domain deception jamming signal by the radar of the opposite side.
The effect of the present invention will be further explained with reference to fig. 2.
The simulation shown in fig. 2 was performed under MATLAB7.0 software, and the parameters of the simulation data were as follows: the radar works in an X wave band, the signal bandwidth is 180MHz, the pulse repetition frequency is 1.7KHz, the slant distance from the phase center of the antenna to the center of a scene is 10500m, the distance direction is 2048 points, the azimuth direction is 1024 points, the working mode of the SAR system is a front side view, and the resolution is 1m multiplied by 1 m. The large scene spoofing disturbing image template is about 2Km × 1Km (2048 × 1024 dots). Because the carrier has motion errors, the SAR echo data are subjected to envelope and phase compensation by using a motion compensation method based on instantaneous frequency modulation rate estimation, and imaging is performed through a CS (Chirp scaling) algorithm.
Fig. 2(a) is a real scene imaging result diagram without deception interference, wherein the abscissa is an azimuth unit, and the ordinate is a distance unit, so that clear imaging results of real ground object targets such as villages, fields and ponds can be seen, and the SAR image has good target focusing power and high contrast.
Fig. 2(b) is a false scene interference template, wherein the abscissa is an azimuth unit, the ordinate is a distance unit, and the image is a high-resolution imaging result of a certain urban area, so that a large number of false urban targets such as buildings, court and roads can be clearly seen in the image.
Fig. 2(c) is a diagram of imaging results in the presence of spoofing interference, where the abscissa is the azimuth unit and the ordinate is the distance unit. It can be seen from fig. 2(c) that the four corners of the image are already obviously covered by the false targets, the false urban targets such as buildings, court and roads are superposed on the real ground object targets such as original villages, fields and ponds, and the false scene targets after the imaging processing have good focusing performance, so that the effect of 'false and trusting' is achieved, and a good large-scene deception jamming effect is obtained.
Claims (6)
1. A large-scene SAR deception jamming implementation method comprises the following steps:
(1) radar signal intercepted by jammer
1a) The jammer intercepts radar time domain signals, and performs Fourier transform on the intercepted radar time domain signals in the distance direction to obtain radar distance frequency domain signals;
1b) performing time delay processing on the radar time domain signal to obtain a radar time domain time delay signal;
(2) blocking processing is carried out on false large scene image
2a) Determining the length of a distance direction blocking unit according to the azimuth direction non-defocusing condition of the focusing depth, and dividing the total length of the distance direction of the false large scene image by the length of the distance direction blocking unit to obtain the number of distance direction blocks;
2b) determining the length of the azimuth block unit according to the Nyquist sampling law, and dividing the length of the azimuth block unit by the total length of the azimuth block unit of the large scene image to obtain the number of azimuth blocks;
2c) dividing a large scene image into M multiplied by N sub-images, wherein M is the number of distance direction blocks, and N is the number of azimuth direction blocks;
2d) setting the geometric center of each sub-image as a respective focusing center, and taking the focusing center of each sub-image as a respective scene center;
(3) modulating the intercepted signal
3a) Fourier transform is carried out on the radar time domain delay signal in the step 1b) in the distance direction to obtain a frequency domain signal of a false scene target point;
3b) defining a part determined by the amplitude of a false scene image and the instantaneous slope distance change between the false scene and a radar in a frequency domain signal of a false scene target point as a frequency domain modulation coefficient;
3c) dividing the sub-image frequency domain modulation coefficient into a pre-generation part and a real-time generation part;
3d) distance direction superposition is carried out on the pre-generated part on the same azimuth unit, and a modulation coefficient pre-generated part after distance superposition is obtained;
3e) multiplying different real-time generation parts of the azimuth units by a modulation coefficient pre-generation part after distance superposition, and superposing in the azimuth direction to obtain a modulation coefficient of the sub-image;
3f) simultaneously executing step 3c) and step 3d) on each sub-image, and performing parallel calculation in step 3e) to obtain modulation coefficients of all the sub-images;
3g) summing the modulation coefficients of all the sub-images to obtain a frequency domain modulated coefficient;
3h) multiplying the frequency domain modulated coefficient by the radar distance frequency domain signal obtained in the step 1a) to obtain a modulated distance frequency domain signal;
(4) generating a spoofed interfering signal
Performing inverse Fourier transform on the modulated distance frequency domain signal in the distance direction to obtain a time domain deception jamming signal;
(5) forwarding deceptive jamming signals
And forwarding the deception jamming signal, and obtaining the deception jamming signal superposed by the real scene radar signal and the time domain deception jamming signal by the radar of the opposite side.
2. The large-scenario SAR deception jamming implementation method of claim 1, characterized in that: the delay processing in the step 1b) refers to delaying the intercepted radar signal
A signal after a time unit, whereinmThe distance difference between the scene target point m and the jammer to the airborne platform is shown, and c is the speed of light.
3. The large-scenario SAR deception jamming implementation method of claim 1, characterized in that: step 2a) the azimuth non-defocusing condition of the focusing depth is as follows:
where | y | is the range block unit length, λ is the radar signal wavelength, RsFor the vertical distance of the jammer to the carrier platform, TaThe synthetic aperture time of the antenna of the carrier, v the carrier speed.
4. The large-scenario SAR deception jamming implementation method of claim 1, characterized in that: the length of the azimuth block unit in the step 2b) is as follows:where | x | is azimuth unit length, λ is radar signal wavelength, RsFor the vertical distance of the jammer to the carrier platform, PRF is the pulse repetition frequency, v is the carrier velocity, D is the carrier velocityThe actual aperture length of the antenna, L is the synthetic aperture length of the airborne antenna.
5. The large-scenario SAR deception jamming implementation method of claim 1, characterized in that: the pre-generated part in the step 3c) is the instantaneous slope distance variable quantity which is independent of the slow time and is determined by the position of the false scene target point relative to the jammer and the distance relative to the scene center in the frequency domain modulation coefficient.
6. The large-scenario SAR deception jamming implementation method of claim 1, characterized in that: the real-time generation part in the step 3c) refers to a part related to slow time and radar platform motion parameters in the frequency domain modulation coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102340174A CN102721948A (en) | 2012-07-06 | 2012-07-06 | Large-scene SAR deception jamming implementation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102340174A CN102721948A (en) | 2012-07-06 | 2012-07-06 | Large-scene SAR deception jamming implementation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102721948A true CN102721948A (en) | 2012-10-10 |
Family
ID=46947764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102340174A Pending CN102721948A (en) | 2012-07-06 | 2012-07-06 | Large-scene SAR deception jamming implementation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102721948A (en) |
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018722A (en) * | 2012-10-15 | 2013-04-03 | 西安电子科技大学 | Method for countering deception false target by utilizing netted radar system |
| CN103197292A (en) * | 2013-04-03 | 2013-07-10 | 北京华清瑞达科技有限公司 | Simulation and proof method of multi-channel radar echo signal |
| CN103616670A (en) * | 2013-12-05 | 2014-03-05 | 西安电子科技大学 | Improved SAR scattered wave interference method based on floating platform |
| CN103675769A (en) * | 2013-12-06 | 2014-03-26 | 西安电子科技大学 | Squinting SAR deception jamming method based on distributed receivers |
| CN103760532A (en) * | 2014-01-13 | 2014-04-30 | 西安电子科技大学 | SAR deception jamming method with jammers and receivers jointly networked |
| CN105259542A (en) * | 2015-11-13 | 2016-01-20 | 河海大学 | Improved radar sidelobe interference method |
| CN105372637A (en) * | 2015-10-28 | 2016-03-02 | 西安电子科技大学 | Radar narrowband deception jamming method based on inching characteristic of moving vehicle object |
| CN105467368A (en) * | 2015-11-25 | 2016-04-06 | 深圳大学 | Multi-receiver equidistant rectangular distribution-based SAR deception jamming method and system |
| CN105699970A (en) * | 2016-01-20 | 2016-06-22 | 中国人民解放军国防科学技术大学 | Inversion range migration method for synthetic aperture radar large-scale scene deception jamming |
| CN105954729A (en) * | 2016-04-29 | 2016-09-21 | 电子科技大学 | Distance-speed combined cheat interference resistant self-adaptive iteration filtering method of radar |
| CN106291494A (en) * | 2016-07-21 | 2017-01-04 | 深圳大学 | The SAR cheating interference target identification method and system strengthened based on differential characteristics |
| CN107144846A (en) * | 2017-04-20 | 2017-09-08 | 中国人民解放军海军工程大学 | A kind of piecemeal synthetic aperture sonar is as processing method |
| CN103809161B (en) * | 2014-01-09 | 2018-09-28 | 中国人民解放军海军航空大学 | Anti- range gate deception+SOJ composite interferences the method for radar fence |
| CN110658535A (en) * | 2019-09-29 | 2020-01-07 | 中国电子科技集团公司第五十四研究所 | Regenerative deception method for navigation satellite time service receiver |
| CN110988818A (en) * | 2019-12-09 | 2020-04-10 | 西安电子科技大学 | Cheating interference template generation method for countermeasure network based on condition generation formula |
| CN111077505A (en) * | 2020-01-16 | 2020-04-28 | 深圳大学 | Mixed interference signal generation method, device, equipment and medium |
| CN111707993A (en) * | 2020-06-11 | 2020-09-25 | 北京理工大学 | Radar anti-interference quick decision-making system and method sharing migratable multi-scene characteristics |
| CN112255596A (en) * | 2020-11-09 | 2021-01-22 | 中国人民解放军战略支援部队航天工程大学 | Space-borne SAR deception jamming signal generation method based on spatial frequency interpolation |
| CN112285658A (en) * | 2020-10-16 | 2021-01-29 | 军事科学院***工程研究院后勤科学与技术研究所 | Recursive computation based method for rapidly generating satellite-borne SAR deception jamming signal |
| CN112904060A (en) * | 2020-02-28 | 2021-06-04 | 加特兰微电子科技(上海)有限公司 | Signal phase compensation method and device, signal scrambling and descrambling method and sensor |
| CN113093122A (en) * | 2021-04-01 | 2021-07-09 | 西安电子科技大学 | Method for fast scene deception jamming of synthetic aperture radar |
| CN113296062A (en) * | 2021-05-31 | 2021-08-24 | 南昌大学 | SAR deception template generation method, system and application based on retrieval optimal value |
| CN113671452A (en) * | 2021-08-09 | 2021-11-19 | 成都众享天地网络科技有限公司 | Active interference simulation design method for synchronously dragging distance and speed |
| CN114609598A (en) * | 2022-02-25 | 2022-06-10 | 哈尔滨工程大学 | Synthetic Aperture Radar (SAR) scene deception jamming method based on image inversion |
| CN116027286A (en) * | 2023-02-14 | 2023-04-28 | 南京航空航天大学 | Quantitative analysis method for influence of SAR investigation error on interference effectiveness |
| CN116466306A (en) * | 2023-04-25 | 2023-07-21 | 南京航空航天大学 | Satellite-borne SAR accurate interference method based on environmental cognition |
| CN116718991A (en) * | 2023-02-14 | 2023-09-08 | 南京航空航天大学 | Parameterized large dynamic range two-dimensional accurate controllable SAR interference method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3248879A1 (en) * | 1982-06-18 | 1984-04-12 | Dornier System Gmbh, 7990 Friedrichshafen | METHOD AND DEVICE FOR GENERATING ARTIFICIAL TARGET BRANDS IN THE IMAGE OF A RADAR WITH SYNTHETIC APERTURE (SAR) |
| CN101464511A (en) * | 2009-01-16 | 2009-06-24 | 北京航空航天大学 | Working wave position decision method for satellite-loaded synthetic aperture radar |
| CN102288943A (en) * | 2011-07-08 | 2011-12-21 | 西安电子科技大学 | Single-channel SAR-GMTI (single-channel synthetic aperture radar and ground moving target indication) method based on two visual reality image processing |
-
2012
- 2012-07-06 CN CN2012102340174A patent/CN102721948A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3248879A1 (en) * | 1982-06-18 | 1984-04-12 | Dornier System Gmbh, 7990 Friedrichshafen | METHOD AND DEVICE FOR GENERATING ARTIFICIAL TARGET BRANDS IN THE IMAGE OF A RADAR WITH SYNTHETIC APERTURE (SAR) |
| CN101464511A (en) * | 2009-01-16 | 2009-06-24 | 北京航空航天大学 | Working wave position decision method for satellite-loaded synthetic aperture radar |
| CN102288943A (en) * | 2011-07-08 | 2011-12-21 | 西安电子科技大学 | Single-channel SAR-GMTI (single-channel synthetic aperture radar and ground moving target indication) method based on two visual reality image processing |
Non-Patent Citations (1)
| Title |
|---|
| 赵博等: "一种虚假大场景SAR快速转发式欺骗干扰方法研究", 《电子与信息学报》, vol. 34, no. 4, 30 April 2012 (2012-04-30), pages 963 - 968 * |
Cited By (40)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018722A (en) * | 2012-10-15 | 2013-04-03 | 西安电子科技大学 | Method for countering deception false target by utilizing netted radar system |
| CN103018722B (en) * | 2012-10-15 | 2014-07-09 | 西安电子科技大学 | Method for countering deception false target by utilizing netted radar system |
| CN103197292A (en) * | 2013-04-03 | 2013-07-10 | 北京华清瑞达科技有限公司 | Simulation and proof method of multi-channel radar echo signal |
| CN103197292B (en) * | 2013-04-03 | 2015-12-02 | 北京华清瑞达科技有限公司 | The generation of Multichannel radar analogue echoes signal and verification method |
| CN103616670A (en) * | 2013-12-05 | 2014-03-05 | 西安电子科技大学 | Improved SAR scattered wave interference method based on floating platform |
| CN103616670B (en) * | 2013-12-05 | 2015-09-30 | 西安电子科技大学 | Based on the SAR scatter-wave jamming method that floating platform improves |
| CN103675769A (en) * | 2013-12-06 | 2014-03-26 | 西安电子科技大学 | Squinting SAR deception jamming method based on distributed receivers |
| CN103675769B (en) * | 2013-12-06 | 2015-11-25 | 西安电子科技大学 | Based on the Squint SAR cheating interference method of distributed receiver |
| CN103809161B (en) * | 2014-01-09 | 2018-09-28 | 中国人民解放军海军航空大学 | Anti- range gate deception+SOJ composite interferences the method for radar fence |
| CN103760532A (en) * | 2014-01-13 | 2014-04-30 | 西安电子科技大学 | SAR deception jamming method with jammers and receivers jointly networked |
| CN103760532B (en) * | 2014-01-13 | 2016-02-03 | 西安电子科技大学 | The SAR cheating interference method of jammer and receiver network interworking |
| CN105372637A (en) * | 2015-10-28 | 2016-03-02 | 西安电子科技大学 | Radar narrowband deception jamming method based on inching characteristic of moving vehicle object |
| CN105259542A (en) * | 2015-11-13 | 2016-01-20 | 河海大学 | Improved radar sidelobe interference method |
| CN105467368A (en) * | 2015-11-25 | 2016-04-06 | 深圳大学 | Multi-receiver equidistant rectangular distribution-based SAR deception jamming method and system |
| CN105699970A (en) * | 2016-01-20 | 2016-06-22 | 中国人民解放军国防科学技术大学 | Inversion range migration method for synthetic aperture radar large-scale scene deception jamming |
| CN105699970B (en) * | 2016-01-20 | 2018-04-10 | 中国人民解放军国防科学技术大学 | A kind of inverse range migration method for synthetic aperture radar large scene cheating interference |
| CN105954729A (en) * | 2016-04-29 | 2016-09-21 | 电子科技大学 | Distance-speed combined cheat interference resistant self-adaptive iteration filtering method of radar |
| CN106291494A (en) * | 2016-07-21 | 2017-01-04 | 深圳大学 | The SAR cheating interference target identification method and system strengthened based on differential characteristics |
| CN106291494B (en) * | 2016-07-21 | 2018-11-13 | 深圳大学 | SAR cheating interference target identification method and system based on differential characteristics enhancing |
| CN107144846B (en) * | 2017-04-20 | 2019-12-17 | 中国人民解放军海军工程大学 | Block synthetic aperture sonar image processing method |
| CN107144846A (en) * | 2017-04-20 | 2017-09-08 | 中国人民解放军海军工程大学 | A kind of piecemeal synthetic aperture sonar is as processing method |
| CN110658535A (en) * | 2019-09-29 | 2020-01-07 | 中国电子科技集团公司第五十四研究所 | Regenerative deception method for navigation satellite time service receiver |
| CN110988818B (en) * | 2019-12-09 | 2023-03-17 | 西安电子科技大学 | Cheating interference template generation method for countermeasure network based on condition generation formula |
| CN110988818A (en) * | 2019-12-09 | 2020-04-10 | 西安电子科技大学 | Cheating interference template generation method for countermeasure network based on condition generation formula |
| CN111077505A (en) * | 2020-01-16 | 2020-04-28 | 深圳大学 | Mixed interference signal generation method, device, equipment and medium |
| CN111077505B (en) * | 2020-01-16 | 2023-08-25 | 深圳大学 | Single-frequency 1-bit mixed interference signal generation method, device, equipment and medium |
| CN112904060A (en) * | 2020-02-28 | 2021-06-04 | 加特兰微电子科技(上海)有限公司 | Signal phase compensation method and device, signal scrambling and descrambling method and sensor |
| CN111707993A (en) * | 2020-06-11 | 2020-09-25 | 北京理工大学 | Radar anti-interference quick decision-making system and method sharing migratable multi-scene characteristics |
| CN112285658A (en) * | 2020-10-16 | 2021-01-29 | 军事科学院***工程研究院后勤科学与技术研究所 | Recursive computation based method for rapidly generating satellite-borne SAR deception jamming signal |
| CN112255596A (en) * | 2020-11-09 | 2021-01-22 | 中国人民解放军战略支援部队航天工程大学 | Space-borne SAR deception jamming signal generation method based on spatial frequency interpolation |
| CN112255596B (en) * | 2020-11-09 | 2023-09-15 | 中国人民解放军战略支援部队航天工程大学 | Space-borne SAR deception jamming signal generation method based on spatial frequency interpolation |
| CN113093122A (en) * | 2021-04-01 | 2021-07-09 | 西安电子科技大学 | Method for fast scene deception jamming of synthetic aperture radar |
| CN113296062A (en) * | 2021-05-31 | 2021-08-24 | 南昌大学 | SAR deception template generation method, system and application based on retrieval optimal value |
| CN113296062B (en) * | 2021-05-31 | 2023-11-24 | 南昌大学 | SAR deception template generation method, system and application based on retrieval optimal value |
| CN113671452A (en) * | 2021-08-09 | 2021-11-19 | 成都众享天地网络科技有限公司 | Active interference simulation design method for synchronously dragging distance and speed |
| CN113671452B (en) * | 2021-08-09 | 2023-08-29 | 成都众享天地网络科技有限公司 | Active interference simulation design method for synchronous towing of distance and speed |
| CN114609598A (en) * | 2022-02-25 | 2022-06-10 | 哈尔滨工程大学 | Synthetic Aperture Radar (SAR) scene deception jamming method based on image inversion |
| CN116027286A (en) * | 2023-02-14 | 2023-04-28 | 南京航空航天大学 | Quantitative analysis method for influence of SAR investigation error on interference effectiveness |
| CN116718991A (en) * | 2023-02-14 | 2023-09-08 | 南京航空航天大学 | Parameterized large dynamic range two-dimensional accurate controllable SAR interference method |
| CN116466306A (en) * | 2023-04-25 | 2023-07-21 | 南京航空航天大学 | Satellite-borne SAR accurate interference method based on environmental cognition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102721948A (en) | Large-scene SAR deception jamming implementation method | |
| CN103869311B (en) | Real beam scanning radar super-resolution imaging method | |
| CN103760532B (en) | The SAR cheating interference method of jammer and receiver network interworking | |
| CN105445711B (en) | A kind of sea key element SAR initial data emulation modes based on inverse Omega K algorithms | |
| CN110988878B (en) | SAR (synthetic Aperture Radar) sea wave imaging simulation method based on RD (RD) algorithm | |
| CN106970386A (en) | A kind of optimization method of RADOP beam sharpening | |
| CN103207387B (en) | Method for quickly simulating airborne phased array pulse Doppler (PD) radar clutter | |
| CN110412587B (en) | Deconvolution-based downward-looking synthetic aperture three-dimensional imaging method and system | |
| CN107918124A (en) | Airborne big strabismus High Resolution SAR imaging method with the correction of orientation space-variant | |
| CN104730498A (en) | Target detection method based on Keystone and weighting rotating FFT | |
| CN103675769A (en) | Squinting SAR deception jamming method based on distributed receivers | |
| CN104898119A (en) | Correlation function-based moving-target parameter estimation method | |
| CN112748431A (en) | Ground moving target imaging method of medium-orbit spaceborne SAR | |
| CN113093122B (en) | Method for synthesizing fast scene deception jamming of aperture radar | |
| CN105699970B (en) | A kind of inverse range migration method for synthetic aperture radar large scene cheating interference | |
| CN110879391B (en) | Radar image data set manufacturing method based on electromagnetic simulation and missile-borne echo simulation | |
| CN106154269A (en) | One is applicable to circumferential synthetic aperture radar fast time-domain formation method | |
| CN103576148B (en) | The method of simulation satellite-borne SAR range ambiguity noise image | |
| CN112285658A (en) | Recursive computation based method for rapidly generating satellite-borne SAR deception jamming signal | |
| CN108490440A (en) | Target location localization method based on doppler spectral offset correction | |
| CN105467368A (en) | Multi-receiver equidistant rectangular distribution-based SAR deception jamming method and system | |
| CN103616670B (en) | Based on the SAR scatter-wave jamming method that floating platform improves | |
| CN109188436B (en) | Efficient bistatic SAR echo generation method suitable for any platform track | |
| CN112255596B (en) | Space-borne SAR deception jamming signal generation method based on spatial frequency interpolation | |
| CN102830390A (en) | Bistatic SAR (Synthetic Aperture Radar) echo simulation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |