CN104597467B - A kind of GNSS-R detection devices and method based on phased array - Google Patents
A kind of GNSS-R detection devices and method based on phased array Download PDFInfo
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- CN104597467B CN104597467B CN201510057939.6A CN201510057939A CN104597467B CN 104597467 B CN104597467 B CN 104597467B CN 201510057939 A CN201510057939 A CN 201510057939A CN 104597467 B CN104597467 B CN 104597467B
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- 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
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
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- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
- G01S19/36—Constructional details or hardware or software details of the signal processing chain relating to the receiver frond end
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- 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
- G01S7/35—Details of non-pulse systems
- G01S7/352—Receivers
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- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The present invention discloses a kind of GNSS R detection devices and method based on phased array, which includes：The two-sided phased array antenna being made of left-handed aerial array, dextrorotation aerial array and radio-frequency front-end, left-handed aerial array and dextrorotation aerial array are back-to-back, and radio-frequency front-end is installed between left-handed aerial array and dextrorotation aerial array；The Doppler delay Mapping Receiver being made of multi-channel radio frequency receiving unit and correlator unit.Two-sided phased array antenna receives signal, gives Doppler delay Mapping Receiver and is handled.This method includes：Two-sided phased array antenna and Doppler delay Mapping Receiver are set, Doppler delay Mapping Receiver is according to the selection and mirror-reflection point prediction for being provided with aeronautical satellite, beam position control instruction is sent to two-sided phased array antenna, makes the angle needed for its beam position.The GNSS R detection devices based on phased array and method of the present invention can cover multiple water areas, expand swath, improve temporal resolution.
Description
Technical field
The present invention relates to a kind of detection device, more particularly to a kind of GNSS-R detection devices and method based on phased array.
Background technology
Nowadays, GNSS technologies have been deep into national defense applications, economical production and the various aspects of daily life.For utilizing
The signal of GNSS satellite sea surface reflection carries out the application of ocean dynamical environment detection and research also increasingly causes the concern of people.
GNSS-R（Global Navigation Satellite System-Reflection）Remote sensing technology is to utilize aeronautical satellite L
Band signal with bank base, aviation or Space-borne, receives and processes ocean, land or target echo, realizes characteristic element
Extraction or the technology of target acquisition, are one of domestic and international remote sensing and field of navigation technology research hotspot.The technical research it is final
Target is to carry out space-borne observation, Global coverage is realized by more star networkings, using the reflection signal of GNSS aeronautical satellites to ocean
Ocean dynamical environment detection is carried out, is mainly used in the sides such as ocean Wind-field Retrieval, the measurement of mesoscale sea level height, sea ice detection
Face.
GNSS-R technologies are detected using multistatic sonar forward scattering pattern.GNSS satellite transmitting signal is dextrorotation entelechy
Change, after surface scattering, signal intensity attenuation and signal polarity overturning, in left-hand circular polarization.Therefore, GNSS-R drive marines
Environment detection instrument is needed using two slave antennas, and a pair is the dextrorotation antenna to day, receives GNSS direct signals；Another pair is pair
The left-handed antenna on ground receives GNSS reflection signals.In spaceborne height, sea echo is faint, need to be connect using high-gain aerial
Receive reflection signal.At present, carry out the research of Oceanic remote sensing using airborne fixed beam GNSS-R remote sensing equipments mostly, it is airborne
GNSS-R survey meters generally push away sweeping using broad beam antenna, receive sea echo；In spaceborne height, sea surface reflection letter
It is number faint, high-gain aerial need to be used to receive reflection signal.High-gain aerial wave beam is relatively narrow, and star can only be received using the mode of sweeping is pushed away
Lower region mirror signal, coverage area is smaller, but uses multi-beam phased array antenna, and multiple water areas can be carried out
Covering, expands swath, improves temporal resolution.
Invention content
The present invention for the above-mentioned prior art the problem of, propose a kind of GNSS-R detection devices based on phased array
And method, multi-beam phased array antenna is used, multiple water areas can be covered, be expanded swath, improve the time
Resolution ratio solves the problems, such as that the wave beam of spaceborne height-finding technique is narrow, coverage area is small.
In order to solve the above technical problems, the present invention is achieved through the following technical solutions：
The present invention provides a kind of GNSS-R detection devices based on phased array, including：Two-sided phased array antenna, Doppler
Delay mapping receiver.The two-sided phased array antenna includes left-handed aerial array, dextrorotation aerial array and radio-frequency front-end, institute
It is back-to-back mode that left-handed aerial array, which is stated, with the dextrorotation aerial array, and the radio-frequency front-end is installed on the left-handed antenna array
Among row and the dextrorotation aerial array；The Doppler delay Mapping Receiver includes multi-channel radio frequency receiving unit and phase
Close device unit；Wherein：For receiving GNSS direct signals, the left-handed aerial array is used to receive the dextrorotation aerial array
GNSS reflects signal, and the direct projection that the radio-frequency front-end is used for the dextrorotation aerial array and the left-handed antenna array receiver is believed
Number, reflection signal handled；The multi-channel radio frequency receiving unit receives the direct projection that the two-sided phased array antenna transmission comes
Signal, reflection signal, handle it, form direct projection intermediate-freuqncy signal, reflection intermediate-freuqncy signal, and the correlator unit receives institute
Direct projection intermediate-freuqncy signal, reflection intermediate-freuqncy signal are stated, it is handled, exports related power.
The present invention using the two-sided phased array antenna of multi-beam by antenna beam be directed toward control, can to multiple water areas into
Row covering, expands swath, improves temporal resolution；Phased array antenna is modularized design, and the extension for antenna provides
It is convenient, when needing to improve antenna gain, when expanding antenna array, it need to be only extended by antenna sub-module design.
Preferably, the left-handed aerial array and the dextrorotation aerial array a corresponding radio-frequency front-end respectively, two
Partition board is provided between a radio-frequency front-end.
Preferably, being integrated of the radio-frequency front-end radio-frequency front-end, is set to the left-handed aerial array and the dextrorotation
Between aerial array, the integrated radio-frequency front end includes：Multi-way receiving module, driver, beam-controller and feed
Network；Wherein：The multi-way receiving module is installed on the antenna of the left-handed aerial array and the dextrorotation aerial array
The rear end of unit；The feeding network is connected with the multi-way receiving module, the driver and the beam-controller.
Radio-frequency front-end uses integrated design, and integrated level is high, size is small, low in energy consumption, light-weight；It is set in two aerial arrays
Between, space can be saved, reduces the height of antenna.
Preferably, the feeding network integrates feeding network for multilayer.Existing feeding network is when signal synthesizes, frequency
Relatively low general using radio frequency cable network, shortcoming is that requirement cable length is completely the same, and when port number is more, network is multiple
Miscellaneous, number of cables is more, and amplitude, phase equalization are difficult to ensure that, debugging, test job amount are big；Power supply and distribution and control signal are
It is realized by making low-frequency cable, when power supply and distribution is with controlling number of signals more, easily malfunctioned.The present invention uses multilayer board
The feeding network of structure, easily, amplitude-phase consistency is high, and Electro Magnetic Compatibility and stability are also relatively good for simple in structure, debugging.
Preferably, further including calibration source, the correlator unit generates control signal and is corrected control to the calibration source
System, the calibration source generate correction source signal, inter-channel level, phase equalization are measured；The radio-frequency front-end receives
The correction source signal generates inter-channel level, phase equalization measurement result by correlator unit；The correlator unit root
According to inter-channel level, phase equalization measurement result, corresponding inter-channel level, phase compensation are calculated, feeds back to the radio frequency
Front end.Using in-orbit correcting mode, the interchannel brought due to temperature influence and component aging etc. can be effectively corrected
Amplitude-phase is inconsistent, improves the detection accuracy of detection device.
Preferably, the operating mode of the detection device includes the two kinds of selections of detection mode and correction mode.
Preferably, the control model of the detection device includes the two kinds of selections of remote control mode and autonomous mode.
Preferably, the beam dispath mode of the detection device includes multi-beam work and simple beam works two kinds and selects.
Preferably, the measurement pattern of the detection device includes surveying height mode and surveys the two kinds of selections of wind pattern.
Preferably, the navigation system of the detection device includes GPS system single mode operation, BD systems single mode operation and GPS+
The three kinds of selections of BD dual-mode of operation.
The detection device of the present invention can need to carry out the combination of various modes according to different environment and detection, improve spy
The practicability of device is surveyed, makes that it is suitable for a variety of different environment.
The present invention also provides a kind of GNSS-R detection methods realized based on phased array, include the following steps：S111：It leans against
Back of the body mode sets left-handed aerial array and dextrorotation aerial array；
S112：Radio-frequency front-end is installed among the left-handed aerial array and the dextrorotation aerial array, is formed two-sided
Phased array antenna；
S113：The two-sided phased array antenna is connected with Doppler delay mapping machine；
S114：The correlator unit of Doppler's Mapping Receiver completes the selection of working method, according to navigator fix
Information completes the selection of aeronautical satellite and mirror-reflection point prediction, generates beam point steering instruction；
S115：Radio-frequency front-end receives the beam point steering signal, by antenna beam be directed toward needed for angle, can be into
Row detection；
Wherein：The working method includes operating mode, detection mode, beam dispath mode, measurement pattern and navigation
It is one or more in system.
Compared to the prior art, the present invention has the following advantages：
（1）GNSS-R detection devices provided by the invention based on phased array use multi-beam phased array antenna, pass through day
Line beam point steering can cover multiple water areas, expand swath, improve temporal resolution；
（2）Radio-frequency front-end of the present invention uses integrated design, and the amplification of collection microwave signal, multichannel Beam synthesis, antenna refer to
It is calculated to beam-control code and with phase, multiple beam switch gate, and amplitude-phase Concordance is integrated, and level of integrated system is high, ruler
It is very little small, low in energy consumption, light-weight；
（3）The present invention uses in-orbit correcting mode, can reduce due to the interchannel that temperature influences and component aging is brought
Amplitude-phase is inconsistent, improves detection accuracy；
（4）The present invention feeding network for multilayer board integrate feeding network, compared to use existing cable system into
Row feed, simple in structure, debugging is easy, the amplitude-phase consistency of power combing, Electro Magnetic Compatibility and stability are relatively good.
（5）The phased array antenna that the present invention uses is modularized design, when needing to improve antenna gain, expands antenna array
When, can antenna sub-module be spliced to realize by design, therefore, autgmentability is strong.
Description of the drawings
Embodiments of the present invention are described further below in conjunction with the accompanying drawings：
Fig. 1 is the structure diagram of the GNSS-R detection devices based on phased array antenna of the embodiment of the present invention 1；
Fig. 2 is the structure diagram of the integrated phased array antenna of the embodiment of the present invention 2；
Fig. 3 is the structure diagram of the GNSS-R detection devices based on phased array antenna of the embodiment of the present invention 3；
Fig. 4 is the work flow diagram of GNSS-R detection method of the realization based on phased array antenna of the present invention；
Fig. 5 is that the correlator unit of the embodiment of the present invention 5 carries out the work flow diagram of mode combinations.
Label declaration：The two-sided phased array antenna of 1-, the left-handed aerial arrays of 11-, 12- dextrorotation aerial arrays, before 13- radio frequencies
End, 14- partition boards, 131- multi-way receiving modules, 132- drivers, 133- beam-controllers, 134- feeding networks, 2- Doppler
Delay mapping receiver, 21- multi-channel radio frequency receiving units, 22- correlator units, 3- calibration sources.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment is carried out lower based on the technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1：
GNSS-R detection device of the present embodiment detailed description of the present invention based on phased array antenna, structure such as Fig. 1 institutes
Show, including two-sided phased array antenna 1 and Doppler delay Mapping Receiver 2.Two-sided phased array antenna 1 includes left-handed aerial array
11st, dextrorotation aerial array 12 and radio-frequency front-end 13, left-handed aerial array 11 are installed back-to-back with dextrorotation aerial array 12, radio frequency
Front end 13 is installed between left-handed aerial array 11 and dextrorotation aerial array 12, left-handed aerial array 11 and dextrorotation aerial array 12
A radio-frequency front-end 13 is corresponded to respectively, and partition board 14 is provided between two radio-frequency front-ends 13；Doppler delay Mapping Receiver 2 wraps
Include multi-channel radio frequency receiving unit 21 and correlator unit 22；Wherein：Left-handed aerial array 11 is believed for receiving GNSS reflections
Number, for receiving GNSS direct signals, radio-frequency front-end 13 is used for left-handed aerial array 11 and dextrorotation day dextrorotation aerial array 12
The reflection signal of the reception of linear array 12, direct signal are amplified, synthesize；Multi-channel radio frequency receiving unit 21 receives two-sided phased
The transmission of array antenna 1 comes treated direct signal, reflection signal, and channel separation, frequency conversion, amplification are carried out to it, forms direct projection
Intermediate-freuqncy signal, reflection intermediate-freuqncy signal, correlator unit 22 receive multi-channel radio frequency receiving unit 21 and transmit the direct projection intermediate frequency letter come
Number, reflection intermediate-freuqncy signal, it is acquired and computing cross-correlation, the time delay for exporting one-dimensional time delay related power or two dimension is more
General Le related power.
Embodiment 2：
The present embodiment is on the basis of embodiment, radio-frequency front-end 13 is described in detail, as shown in Fig. 2, this radio-frequency front-end 13
It is the integrated design, including multi-way receiving module 131, driver 132, beam-controller 133 and feeding network 134.It is left
Each antenna element rear end of rotation aerial array 11 and dextrorotation aerial array 12 connects a multi-way receiving module 131, left-handed day
Linear array 11 and dextrorotation aerial array 12 correspond to a beam-controller 132, a driver 133 and a feeding network 134 respectively,
Multi-way receiving module 131, beam-controller 132 and driver 133 are connected respectively with feeding network 134.
The feeding network 134 of the present embodiment is multilayered printed harden structure, by being laid out after Computer Simulation, using more
Layer printing version processing technology one-pass molding integrates microwave power synthesis, power supply and distribution and signal control.Compared to using cable system
Network, simple in structure, debugging is easy, and the amplitude-phase consistency of power combing is high, and Electro Magnetic Compatibility and stability are also relatively good.
In the present embodiment, radio-frequency front-end 13 is arranged between left-handed aerial array 11 and dextrorotation aerial array 12, Neng Goujie
Save space reduces the height of antenna.
Embodiment 3：
The present invention is on the basis of embodiment 2, increases calibration source 3, and correlator unit 22 generates control signal to school
Positive source 3 is corrected control, and calibration source 3 generates correction source signal, inter-channel level, phase equalization are measured；It is mostly logical
Road receiving unit 131 receives correction source signal；Correlator unit 22 generates inter-channel level, phase equalization measurement result；Phase
Device unit 22 is closed according to inter-channel level, phase equalization measurement result, calculates corresponding inter-channel level, phase compensation, instead
Feed beam-controller 132, inter-channel level phase compensated, uses in-orbit correcting mode, can effectively solve the problem that by
In temperature influence and the reasons such as component aging caused by inter-channel level phase it is inconsistent the problem of, improve detection accuracy.
Embodiment 4：
GNSS-R detection method of the present embodiment detailed description of the present invention based on phased array, includes the following steps：
S111：Left-handed aerial array and dextrorotation aerial array are set back-to-back；
S112：Radio-frequency front-end is installed between the left-handed aerial array and the dextrorotation aerial array, is formed two-sided
Phased array antenna；
S113：The two-sided phased array antenna is connected with Doppler delay mapping machine；
S114：The correlator unit of Doppler's Mapping Receiver completes the various combination of multiple-working mode, according to
Navigator fix information completes the selection of aeronautical satellite and mirror-reflection point prediction, generates beam point steering signal；
S115：The beam-controller 133 of radio-frequency front-end 13 receives the beam point steering signal, goes to required wave beam
Orientation angle, N number of wave beam of dextrorotation aerial array 11 are directed at N number of different GNSS satellite, N number of wave beam of left-handed aerial array 12
The sea specular reflection point of the GNSS satellite pointed by the wave beam of dextrorotation aerial array is respectively aligned to, is detected, Doppler prolongs
The aeronautical satellite direct signal and sea echo of slow Mapping Receiver reception antenna output, relevant treatment is carried out to it.
Wherein：Correlator unit 22 selects working method, including to operating mode, control model, beam dispath
The selection and combination of mode, measurement pattern and navigation system.Operating mode can have detection mode and correction in the present embodiment
Two kinds of selections of pattern, control model can have the two kinds of selections of remote control mode and autonomous mode, and beam dispath mode can have more waves
Two kinds of selections that beam works and simple beam works, measurement pattern can have survey height mode and survey the two kinds of selections of wind pattern, navigation system
Can there are three kinds of GPS system single mode operation, BD single mode operations and GPS+BD dual-mode of operation selections.Correlator unit 22 can be right
Above-mentioned working method carries out different selection and combination.
Embodiment 5：
The workflow that a kind of correlator unit 22 selects working method and combines is described in detail in the present embodiment,
Flow chart is as shown in Figure 4.
The selection of control model is carried out first, is the judgement by telecommand, is if it is selected remote control mode, such as
Otherwise fruit selects autonomous mode；
When for autonomous mode, then carry out detection mode selection, be by carrying out regular calibration judgement, if
Then calibration source is switched on, system is corrected, is then back to the selection to control mode；If otherwise height mode is surveyed in selection,
Then selection multi-beam work, completes the selection and combination of working method, is detected；
When for remote control mode, the selection of detection mode is then carried out, is judged by system compensation, if it is will
Calibration source is switched on, and system is corrected, is then back to the selection to control mode；If otherwise carry out the choosing of navigation system
It selects, then measures the selection of pattern, star strategy is selected in formulation, finally carries out the selection of beam dispath mode, completes work side
The selection and combination of formula, are detected.
It is merely given as the example of a working mode selection and combination herein, in different embodiments, to various working methods
The sequence of selection can be different, and also one or more working methods therein can be defined as needed, be defined to specific
A certain kind, it is not necessary to selected.
Disclosed herein is merely a preferred embodiment of the present invention, and this specification is chosen and specifically describes these embodiments, is
It is not limitation of the invention in order to preferably explain the principle of the present invention and practical application.Any those skilled in the art
The modifications and variations done in the range of specification should all be fallen in the range of the present invention protects.
Claims (10)
1. a kind of GNSS-R detection devices based on phased array, which is characterized in that including：
Two-sided phased array antenna, including left-handed aerial array, dextrorotation aerial array and radio-frequency front-end, the left-handed antenna array
Row are back-to-back mode with the dextrorotation aerial array, and the radio-frequency front-end is installed on the left-handed aerial array and the dextrorotation
Between aerial array；
The dextrorotation aerial array for receiving GNSS direct signals, for receiving GNSS reflections believe by the left-handed aerial array
Number, the radio-frequency front-end is used for the direct signal to the dextrorotation aerial array and the left-handed antenna array receiver, reflection is believed
It number is handled；
Doppler delay Mapping Receiver, including multi-channel radio frequency receiving unit and correlator unit；Wherein：
The multi-channel radio frequency receiving unit receives direct signal, the reflection signal that the two-sided phased array antenna transmission comes, right
It is handled, and forms direct projection intermediate-freuqncy signal, reflection intermediate-freuqncy signal, the correlator unit receive the direct projection intermediate-freuqncy signal,
Intermediate-freuqncy signal is reflected, it is handled, exports related power；
Calibration source is further included, the calibration source generates correction source signal, and the correlator unit generates control signal to the school
Positive source is corrected control；
The radio-frequency front-end receives the correction source signal, and inter-channel level, phase equalization are surveyed by correlator unit
Amount generates inter-channel level, phase equalization measurement result；
The correlator unit calculates corresponding inter-channel level, phase according to inter-channel level, phase equalization measurement result
Compensation, feeds back to the radio-frequency front-end.
2. the GNSS-R detection devices according to claim 1 based on phased array, which is characterized in that the left-handed antenna array
Row and a dextrorotation aerial array corresponding radio-frequency front-end respectively are provided with partition board between two radio-frequency front-ends.
3. the GNSS-R detection devices according to claim 1 based on phased array, which is characterized in that the radio-frequency front-end is
Integrated radio-frequency front end is set between the left-handed aerial array and the dextrorotation aerial array, before the integrated radio-frequency
End includes：Multi-way receiving module, driver, beam-controller and feeding network；Wherein：
The multi-way receiving module is installed on the antenna element of the left-handed aerial array and the dextrorotation aerial array
Rear end；
The feeding network is connected with the multi-way receiving module, the driver and the beam-controller.
4. the GNSS-R detection devices according to claim 3 based on phased array, which is characterized in that the feeding network is
Multilayer integrates feeding network.
5. the GNSS-R detection devices according to claim 1 based on phased array, which is characterized in that the detection device
Operating mode includes the two kinds of selections of detection mode and correction mode.
6. the GNSS-R detection devices according to claim 1 based on phased array, which is characterized in that the detection device
Control model includes the two kinds of selections of remote control mode and autonomous mode.
7. the GNSS-R detection devices according to claim 1 based on phased array, which is characterized in that the detection device
Beam dispath mode includes multi-beam work and simple beam works two kinds and selects.
8. the GNSS-R detection devices according to claim 1 based on phased array, which is characterized in that the detection device
Measurement pattern includes surveying height mode and surveys the two kinds of selections of wind pattern.
9. the GNSS-R detection devices according to claim 1 based on phased array, which is characterized in that the detection device
Navigation system includes three kinds of GPS system single mode operation, BD systems single mode operation and GPS+BD dual-mode of operation selections.
10. a kind of GNSS-R detection methods realized based on phased array, which is characterized in that include the following steps：
S111：Back-to-back mode sets left-handed aerial array and dextrorotation aerial array；
S112：Radio-frequency front-end is installed among the left-handed aerial array and the dextrorotation aerial array, is formed two-sided phased
Array antenna；
S113：The two-sided phased array antenna is connected with Doppler delay mapping machine；
S114：The correlator unit of Doppler's Mapping Receiver completes the selection of working method, according to navigator fix information
The selection of aeronautical satellite and mirror-reflection point prediction are completed, generates beam point steering signal, the beam point steering letter
Number generate during further include：
The correlator unit generates control signal and control is corrected to calibration source, and the calibration source generates correction source signal；
The radio-frequency front-end receives the correction source signal, and inter-channel level, phase equalization are surveyed by correlator unit
Amount generates inter-channel level, phase equalization measurement result；
The correlator unit calculates corresponding inter-channel level, phase according to inter-channel level, phase equalization measurement result
Compensation, feeds back to the radio-frequency front-end；
S115：The radio-frequency front-end receives the beam point steering signal, by antenna beam be directed toward needed for angle；
Wherein：The working method includes operating mode, control model, beam dispath mode, measurement pattern and navigation system
In it is one or more.
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| CN105334510B (en) * | 2015-10-19 | 2018-05-08 | 泛太通信导航（深圳）有限公司 | A kind of GNSS-R surface explorations apparatus and method |
| CN106199220B (en) * | 2016-07-14 | 2019-01-22 | 厦门大学 | Array antenna phase equalization measurement method based on optical path difference correction |
| CN106371110B (en) * | 2016-08-16 | 2018-12-25 | 上海航天测控通信研究所 | A kind of GNSS-R giving young employees remedial-courses in general knowledge and vocational skills time delay interference processing system and method |
| CN106972262A (en) * | 2017-04-06 | 2017-07-21 | 上海航天测控通信研究所 | A kind of spaceborne GNSS R multi-beams phased array antenna and its method |
| CN108267720B (en) * | 2018-01-31 | 2021-08-13 | 中国电子科技集团公司第三十八研究所 | Simultaneous multi-beam selection switch for multi-target search and tracking and scheduling method |
| US10976411B2 (en) * | 2018-09-25 | 2021-04-13 | GM Global Technology Operations LLC | Classification of detected reflections in a sensing system |
| CN109116387A (en) * | 2018-10-24 | 2019-01-01 | 曲卫 | Navigational satellite reflected signal intermediate frequency Enhancement Method |
| CN109884668B (en) * | 2019-04-03 | 2022-12-09 | 上海航天测控通信研究所 | GNSS-R correlator device based on distributed computation and GNSS-R comprehensive detection device |
| CN112014651B (en) * | 2020-09-03 | 2023-05-16 | 上海无线电设备研究所 | Test method and test system of variable-frequency multi-channel phased array antenna |
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| CN102520419A (en) * | 2011-11-22 | 2012-06-27 | 航天恒星科技有限公司 | Receiving system and receiving method for GNSS (global navigation satellite system) sea reflecting signal |
| CN103558585A (en) * | 2013-11-11 | 2014-02-05 | 上海航天测控通信研究所 | Relevant processing device of satellite-bone phased array GNSS-R ocean remote sensing |
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| CN102520419A (en) * | 2011-11-22 | 2012-06-27 | 航天恒星科技有限公司 | Receiving system and receiving method for GNSS (global navigation satellite system) sea reflecting signal |
| CN103558585A (en) * | 2013-11-11 | 2014-02-05 | 上海航天测控通信研究所 | Relevant processing device of satellite-bone phased array GNSS-R ocean remote sensing |
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