CN202583456U - Building perspective detection device based on hybrid waveforms - Google Patents
Building perspective detection device based on hybrid waveforms Download PDFInfo
- Publication number
- CN202583456U CN202583456U CN 201220190721 CN201220190721U CN202583456U CN 202583456 U CN202583456 U CN 202583456U CN 201220190721 CN201220190721 CN 201220190721 CN 201220190721 U CN201220190721 U CN 201220190721U CN 202583456 U CN202583456 U CN 202583456U
- Authority
- CN
- China
- Prior art keywords
- links
- output terminal
- input end
- frequency
- continuous wave
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The utility model provides a building perspective detection device based on hybrid waveforms. The building perspective detection device comprises a transmitter, a two-channel receiver, a data acquisition and sequential control module, a signal processor, a display and control terminal, a power module, a transmitting antenna and two receiving antennas. The transmitter can be used to generate two signal waveforms including stepped frequency continuous waves and single carrier frequency continuous waves, and a low pass filter whose diverter switch is fused with two different cut-off frequencies required by two waveform receivers is adopted, so the fusion of receiver structures of two waveform systems including the stepped frequency continuous waves and the single carrier frequency continuous waves is realized. According to the utility model, the single detection device can be used to ensure that not only the locating and tracking of a moving human body can be realized by adopting the stepped frequency continuous waves, but also the detection of the weak breathing vital signs of a steady and still human body can be realized by adopting the single carrier frequency continuous waves, and more effective detection can be performed by adopting different signal waveforms according to different detection scenes while improving the integration level of the system, so the applicability of the detection device in complex building detection scenes is improved.
Description
Technical field
The utility model relates to Radar Technology, particularly buildings perspective Detection Techniques.
Background technology
The buildings perspective is surveyed and is meant through detection, location, tracking, imaging and the identification of building masonry wall to the hidden human body target of interior of building.Satisfying the unique feasible sniffer of this type of application demand is microwave radar; Employing has the electromagnetic wave of the CF of penetration capacity to building masonry wall; Through hidden human body target echo is carried out signal Processing; Extract the information such as position, state and vital signs of human body target, realize the detection of buildings perspective.
Existing buildings perspective sniffer based on microwave radar is mainly realized: movement human location and tracking and static human body feeble respiration vital signs are surveyed; Wherein, Movement human location and tracer request sniffer possess very high distance resolution and certain detection range penetrating under the body of wall condition; Therefore; Require radar detection apparatus to adopt the signal waveform of wide-bandwidth product when big, the typical case is represented as step frequency continuous wave signal and linear frequency modulation continuous wave signal, has an X-rayed sniffer like the buildings of U.S. AKELA company, Britain THALES company and Canadian defense research and development center DRDC development and has all adopted the step frequency continuous wave signal; And survey for static human body feeble respiration vital signs; Radar receiver requires to possess very high sensitivity; Promptly possesses very narrow bandwidth of operation; Because the operation of receiver broader bandwidth under step frequency continuous wave and two kinds of waveform systems of linear frequency modulation continuous wave, receiver sensitivity is unfavorable for the sane detection of feeble respiration vital signs, therefore; Radar detection apparatus adopts single carrier frequency continuous wave signal usually; Corresponding receiver possesses very narrow bandwidth of operation, guarantees that very high receiver sensitivity realizes the sane detection of feeble respiration vital signs, has all adopted single carrier frequency continuous wave signal like the Hawaii university of the U.S. and the buildings perspective sniffer of Michigan university development.In sum, existing buildings perspective sniffer all is single waveform system, realizes different detecting functions pointedly based on different system advantages, and the single detective device can't be realized multiple detecting function, has reduced the integrated level and the applicability of device.
The utility model content
The utility model technical matters to be solved is to provide a kind of buildings that can realize that movement human location and tracking and vital signs are surveyed to have an X-rayed sniffer.
The utility model is to solve the problems of the technologies described above the technical scheme that is adopted to be; A kind of buildings perspective sniffer based on hybrid waveform; It is characterized in that, comprise transmitter, two passage receivers, data acquisition and time-sequence control module, signal processor, show control terminal, power module, emitting antenna and double reception antenna; The local oscillation signal output terminal of transmitter links to each other with the local oscillation signal input end of two passage receivers; The output terminal of transmitter links to each other with emitting antenna; The input end of receiver links to each other with the double reception antenna; Data acquisition links to each other with the data output end of two passage receivers with the data input pin of time-sequence control module; Data acquisition links to each other with the controlled variable output terminal of apparent control terminal with the controlled variable input end of time-sequence control module; Showing control terminal links to each other with signal processor; Data acquisition links to each other with the data receiver of signal processor with the data output end of time-sequence control module, and data acquisition links to each other with the steering order receiving end of transmitter, the steering order receiving end of two passage receivers respectively with the steering order output terminal of time-sequence control module, and power module links to each other with the double reception antenna with time-sequence control module, signal processor, apparent control terminal, power module, emitting antenna with transmitter, two passage receivers, data acquisition respectively;
Said transmitter comprises with reference to crystal oscillator RIF, Direct Digital Frequency Synthesizers DDS, on-site programmable gate array FPGA, two frequency multiplication filtering amplifications link, power divider and attenuators; The output terminal of RIF links to each other with the input end that link is amplified in first frequency multiplication filtering; The output terminal that link is amplified in first frequency multiplication filtering links to each other with the reference signal input end of DDS; The steering order input end of FPGA links to each other with the steering order output terminal of sequential control with data acquisition; The steering order output terminal of FPGA links to each other with the steering order input end of DDS and the steering order input end of attenuator respectively; The output terminal of DDS links to each other with the input end that link is amplified in second frequency multiplication filtering, and the output terminal of second frequency multiplication filtering amplification link links to each other with the input end of power divider, and an output terminal of power divider links to each other with the input end of attenuator; Another output terminal of power divider links to each other with the local oscillator input end of two IQ two-way detuners of receiver respectively, and the output terminal of attenuator links to each other with emitting antenna; DDS output step frequency continuous wave and single carrier frequency continuous wave;
Said two-channel receiver comprises 2 low noise amplifier LNA, 2 BPF. BPF, 2 IQ detuners, 4 change-over switches, 4 step frequency low-pass filters, 4 single carrier frequency low-pass filters; The input end of two LNA links to each other with two receiving antennas respectively; The output terminal of two LNA links to each other with the input end of two BPF respectively; The output terminal of two BPF links to each other with the input end of two IQ detuners respectively; The I road output terminal of IQ detuner, Q road output terminal link to each other with the input end of corresponding change-over switch respectively; Two output terminals of change-over switch connect 1 step frequency low-pass filter and 1 single carrier frequency low-pass filter respectively, and the output terminal of step frequency low-pass filter and single carrier frequency low-pass filter links to each other with the data input pin of data acquisition with the analog to digital converter ADC of time-sequence control module;
Described data acquisition and time-sequence control module comprise 4 analog to digital converter ADC, on-site programmable gate array FPGA, USB peripheral hardware; The input end of ADC links to each other with the output terminal of the low-pass filter of receiver; The data input pin of FPGA links to each other with the output terminal of ADC; The steering order output terminal of FPGA links to each other with the steering order input end of the FPGA of transmitter; The data output end of FPGA links to each other with the USB peripheral hardware with the controlled variable input end, and the data output end of USB peripheral hardware links to each other with signal processor, and the controlled variable input end of USB peripheral hardware links to each other with apparent control terminal.
Concrete, it is that link is amplified in nine frequency multiplication filtering that link is amplified in said frequency multiplication filtering.
Concrete; Said Direct Digital Frequency Synthesizers DDS exports the step frequency continuous wave of 88.89MHz-200MHz and at the resident single carrier frequency continuous wave of 88.89MHz, 144.45MHz and three frequencies of 200MHz, the step frequency continuous wave of 88.89MHz-200MHz amplifies the step frequency continuous wave of link output 0.8 to 1.8GHz through nine frequency multiplication filtering; 88.89MHz, single carrier frequency continuous wave of 144.45MHz and 200MHz amplifies single carrier frequency continuous wave of link output 0.8GHz, 1.3GHz and 1.8GHz through nine frequency multiplication filtering; Said step frequency low-pass filter is the low-pass filter of cutoff frequency 1MHz, the low-pass filter that said single carrier frequency low-pass filter is cutoff frequency 10Hz.
The utility model transmitter can produce step frequency continuous wave and two kinds of signal waveforms of single carrier frequency continuous wave; Adopt change-over switch to merge the low-pass filter of two kinds of different cutoff frequencys of two kinds of waveform receivers requirement, realized the fusion of step frequency continuous wave and two kinds of waveform systems of single carrier frequency continuous wave receiver structure.Guarantee that single sniffer both can adopt the step frequency continuous wave to realize the movement human location and follow the tracks of; Can adopt single carrier frequency continuous wave to realize sane static human body feeble respiration vital signs detection again; When improving level of integrated system, can adopt the various signals waveform to implement more efficiently detection, promote sniffer and survey the applicability under the scene at complex building according to different detection scenes.
The beneficial effect of the utility model is that realization movement human location and tracking and static human body feeble respiration vital signs are surveyed two detecting functions, have improved the integrated level and the applicability of device.
Description of drawings
Fig. 1 is the structured flowchart of the utility model.
Fig. 2 is the structured flowchart of this transmitter and receiver.
Fig. 3 is based on the buildings perspective sniffer instance of hybrid waveform and surveys scene.
Embodiment
The utility model is based on the buildings perspective sniffer of hybrid waveform; Its transmitter can produce step frequency continuous wave and two kinds of waveforms of single carrier frequency continuous wave; Simultaneously receiver has merged the receiver structure under two kinds of waveform systems; The single detective device promptly can adopt the work of step frequency continuous wave, and wide when big-bandwidth product guarantees very high distance resolution and certain detection range, realizes the movement human location and follows the tracks of; Also can adopt the work of single carrier frequency continuous wave, the very narrow very high receiver sensitivity of operation of receiver bandwidth guarantee realizes the detection of static human body feeble respiration vital signs.
The utility model mainly comprises transmitter, two passage receivers, data acquisition and time-sequence control module, signal processor, shows control terminal, power module, emitting antenna and double reception antenna; As shown in Figure 1; The local oscillation signal output terminal of transmitter links to each other with the local oscillation signal input end of two passage receivers; The output terminal of transmitter links to each other with emitting antenna; The input end of receiver links to each other with the double reception antenna; Data acquisition links to each other with the data output end of two passage receivers with the data input pin of time-sequence control module; Data acquisition links to each other with the controlled variable output terminal of apparent control terminal with the controlled variable input end of time-sequence control module, shows control terminal and links to each other with signal processor, and data acquisition links to each other with the data receiver of signal processor with the data output end of time-sequence control module; Data acquisition links to each other with the steering order receiving end of transmitter, the steering order receiving end of two passage receivers respectively with the steering order output terminal of time-sequence control module, and power module links to each other with the double reception antenna with time-sequence control module, signal processor, apparent control terminal, power module, emitting antenna with transmitter, two passage receivers, data acquisition respectively;
Each module functions is following:
Show control terminal: realize man-machine interaction through showing the control graphic interface; Receive the buildings perspective result of detection data of also shows signal processor input in real time; Response user operation comprises configuration parameter change operations such as basic operations such as surveying beginning and termination and the selection of work wave system.
Transmitter: according to the work wave system that shows control terminal output; Receive the steering order of data acquisition and time-sequence control module; By step frequency continuous wave or single carrier frequency continuous wave signal of instruction generation specification signal parameter, be that two passage receivers provide the two-way local oscillation signal simultaneously.
Data acquisition and time-sequence control module: receive to show the configuration parameter of control terminal output, and configuration parameter is decoded as steering order sends to data acquisition and adjust its running parameter with time-sequence control module; Receive two group of four road IQ base-band analog signal that two passage receivers form, carry out exporting signal processor to after the digitized processing.
Signal processor: receive data from data acquisition and time-sequence control module; To work at present waveform system; Opening motion human body location and tracking signal treatment channel or static human body feeble respiration vital signs detectable signal treatment channel; Two group of four road IQ baseband digital signal to respective waveforms handled, and forms buildings perspective result of detection, comprises movement human track and static human body vital signs spectrogram.
Two passage receivers: receive two groups of echoed signals that two receiving antennas are collected; Carrying out signal through low noise amplifier amplifies; Utilize BPF. to suppress the outer undesired signal of band, the two-way local oscillation signal that provides based on transmitter carries out the demodulation of IQ two-way to two groups of echoed signals respectively, and is last; To work at present waveform system, the high frequency interference composition that produces through the open corresponding low pass filter filters out demodulation of switch control forms two group of four road IQ base-band analog signal.
Power module: multiple stable voltage and enough each module operate as normal of electric current assurance device are provided.
Receive antenna for one two: carry out the radiation and the collection of step frequency continuous wave or single carrier frequency continuous wave.
Wherein, the structure of apparent control terminal, data acquisition and time-sequence control module, signal processor, power module, reception and emitting antenna is existing, does not give unnecessary details at this.
The utility model improves transmitter mode of operation and receiver structure on the basis of the transmitter that has sniffer now, receiver, and is as shown in Figure 2.
Said transmitter comprises with reference to crystal oscillator RIF, Direct Digital Frequency Synthesizers DDS, on-site programmable gate array FPGA, two frequency multiplication filtering amplifications link, power divider and attenuators; The output terminal of RIF links to each other with the input end that link is amplified in first frequency multiplication filtering; The output terminal that link is amplified in first frequency multiplication filtering links to each other with the reference signal input end of DDS; The steering order input end of FPGA links to each other with the steering order output terminal of sequential control with data acquisition; The steering order output terminal of FPGA links to each other with the steering order input end of DDS and the steering order input end of attenuator respectively; The output terminal of DDS links to each other with the input end that link is amplified in second frequency multiplication filtering, and the output terminal of second frequency multiplication filtering amplification link links to each other with the input end of power divider, and an output terminal of power divider links to each other with the input end of attenuator; Another output terminal of power divider links to each other with the local oscillator input end of two IQ two-way detuners of receiver respectively, and the output terminal of attenuator links to each other with emitting antenna; DDS output step frequency continuous wave and single carrier frequency continuous wave;
The transmitter of improvement pattern can produce step frequency continuous wave and two kinds of signal waveforms of single carrier frequency continuous wave, realizes two detecting functions of movement human location and tracking and static human body feeble respiration vital signs detection respectively.Because the step frequency continuous wave is formed through frequency-distributed is progressive by single carrier frequency continuous wave of shorter residence time; Therefore; Steering order through data acquisition and time-sequence control module; It is progressive or lasting resident at a certain setpoint frequency that the Direct Digital Frequency Synthesizers that controls transmitter is carried out frequency-distributed, forms single carrier frequency continuous wave of step frequency continuous wave or CF.
Two-channel receiver comprises that low-pass filter LPF, 4 cutoff frequencys as single carrier frequency low-pass filter that 2 low noise amplifier LNA, 2 BPF. BPF, 2 IQ detuners, 4 change-over switches, 4 cutoff frequencys as the step frequency low-pass filter are 1MHz are the low-pass filter LPF of 10Hz; The input end of two LNA links to each other with two receiving antennas respectively; The output terminal of two LNA links to each other with the input end of two BPF respectively; The output terminal of two BPF links to each other with the input end of two IQ detuners respectively; The I road output terminal of IQ detuner, Q road output terminal link to each other with the input end of corresponding change-over switch respectively; Two output terminals of change-over switch connect 1 step frequency low-pass filter and 1 single carrier frequency low-pass filter respectively, and the output terminal of step frequency low-pass filter and single carrier frequency low-pass filter links to each other with the data input pin of data acquisition with the analog to digital converter ADC of time-sequence control module.
To step frequency continuous wave and two kinds of signal waveforms of single carrier frequency continuous wave; Improved receiver structure adopts change-over switch to merge the low-pass filter of two kinds of different cutoff frequencys of two kinds of waveform system receivers requirement; Shared low noise amplifier, BPF. and IQ two-way detuner have been realized the fusion of step frequency continuous wave and two kinds of waveform systems of single carrier frequency continuous wave receiver structure.Carry out Filtering Processing according to the baseband signal of the open corresponding LPF of various signals Waveform Control change-over switch after in the course of work to demodulation; For the step frequency continuous wave; Because step frequency continuous wave single frequency baseband signal has short residence time; Cause the base-band signal spectrum of zero center frequency to possess the spectrum width of broad; Therefore need the LPF of open cutoff frequency higher (1MHz) effectively to keep baseband signal simultaneously at the high-frequency interferencing signal that the filtering demodulation produces, wide-bandwidth product has guaranteed high distance accuracy and certain detection range during step frequency continuous wave big, is applicable to the movement human location and follows the tracks of; For single carrier frequency continuous wave; In order to guarantee sane detection and resolution to static human body low frequency feeble respiration characteristic; Require long detection time; Cause the base-band signal spectrum of zero center frequency to possess narrower spectrum width, the LPF of therefore open cutoff frequency lower (10Hz) just can effectively keep baseband signal at the high-frequency interferencing signal that the filtering demodulation produces simultaneously, and lower LPF causes narrow operation of receiver bandwidth; Improve receiver sensitivity, be applicable to the detection of feeble respiration vital signs.
The buildings perspective sniffer instance and the detection scene of a hybrid waveform system are as shown in Figure 3, and sniffer adopts one two to receive antenna, and emitting antenna is placed in the middle, and the dual-mode antenna spacing is 0.5m; Notebook computer PC is as the signal processor and the apparent control terminal of device; Operating personnel send to the step frequency continuous wave signal of transmitter control generation 0.8GHz-1.8GHz or single carrier frequency continuous wave signal of 0.8GHz, 1.3GHz and three kinds of frequencies of 1.8GHz through changing apparent control interface configurations parameter by the apparent control terminal of PC; Wherein the amplification of the frequency multiplication filtering in transmitter link is that link is amplified in nine frequency multiplication filtering; RIF is the crystal oscillator of 100MHz; The model of DDS is AD9858, and the model of transmitter FPGA is XC3S200; The model that the IQ detuner adopts in the receiver is ADL5382, the corresponding step frequency low-pass filter of the LPF of cutoff frequency 1MHz, the corresponding single carrier frequency low-pass filter of the LPF of cutoff frequency 10Hz; Data acquisition and time-sequence control module comprise 4 analog to digital converter ADC, FPGA, USB interface; Analog to digital converter, USB interface link to each other with the FPGA of time-sequence control module with data acquisition respectively; The concrete model of ADC is that the model of the FPGA of AD7537, data acquisition and time-sequence control module adopts XC3S1000, and data acquisition and time-sequence control module communicate through USB interface and PC signal processor and apparent control terminal.
The concrete workflow of sniffer is following:
(1) to movement human location and the application demand of following the tracks of or static human body feeble respiration vital signs is surveyed; Operating personnel show control terminal through PC and revise the configuration parameter that shows the control interface; Selecting arrangement is operated in step frequency continuous wave system or single carrier frequency continuous wave system, sends configuration parameter to data acquisition and time-sequence control module.
(2) FPGA of data acquisition and time-sequence control module is decoded as two parts steering order with configuration parameter; First sends to transmitter FPGA and carries out compiling of instruction; Control DDS produces step frequency continuous wave or single carrier frequency continuous wave, and control numerical-control attenuator adjustment emissive power; Second portion send to the open cutoff frequency of receiver CS be the LPF of 1MHz to the demodulation of step frequency continuous wave after IQ two-way analog baseband signal carry out filtering, the LPF that perhaps open cutoff frequency is 10Hz to the demodulation of single carrier frequency continuous wave after IQ two-way analog baseband signal carry out filtering.
(3) transmitter FPGA receives the steering order from data acquisition and time-sequence control module FPGA; Carry out the step frequency continuous wave of the progressive generation of frequency-distributed 88.89MHz-200MHz through control DDS behind the compiling of instruction; Further through forming the step frequency continuous wave of 0.8GHz-1.8GHz behind the nine frequency multiplication filtering amplification link; It is resident and amplify the single carrier frequency continuous wave that forms 0.8GHz, 1.3GHz and 1.8GHz behind the link through nine frequency multiplication filtering in 88.89MHz, 144.45MHz and three frequencies of 200MHz perhaps to control DDS; The signal that forms is sent into receiver as local oscillator through a power divider part, and a part carries out sending into emitting antenna to the search coverage directed radiation after the emissive power adjustment through numerical-control attenuator.
(4) electromagnetic wave signal of emitting antenna radiation penetrates building masonry wall and arrives human body target, and through the human body target scattering, scattered signal is collected by two receiving antennas after penetrating building masonry wall once more simultaneously.
(5) two echoed signals that receiving antenna is collected; Sending into two passage receivers amplifies respectively and filtering simultaneously; Utilize the synchronous local oscillator of transmitter to carry out the demodulation of IQ two-way; For the signal after the demodulation of step frequency continuous wave; The LPF of the open 1MHz of the steering order CS of data acquisition and time-sequence control module carries out Filtering Processing, carries out Filtering Processing for the LPF of the signal at clear 10Hz after the demodulation of single carrier frequency continuous wave, and each receiving antenna echo is corresponding to form one group of IQ two-way analog baseband signal.
(6) reception of data acquisition and time-sequence control module is carried out the AD sampling from the IQ two-way analog baseband signal of receiver; Convert IQ two-way digital baseband signal into, two groups of IQ two-way digital baseband signals that FPGA is corresponding with two receiving antennas then send to the PC signal processor by rule encapsulation back through USB.
(5) PC is as signal processor and apparent control terminal; Show control image conversion human-computer interaction interface integrated signal processing algorithm; Through being set, configuration parameter in change device work wave, selects the open corresponding signal process passage in the control interface that shows; Two groups of IQ two-way digital baseband signals for the step frequency continuous wave; Opening motion human body location and tracking signal treatment channel comprise separations, resample, go direct current, the exemplary process of windowing, IFFT pulse pressure, detection, location and tracking, formation movement human track; Two groups of IQ two-way digital baseband signals for single carrier frequency continuous wave; Open static human body feeble respiration vital signs detectable signal treatment channel; The exemplary process of comprising separation, remove direct current, resampling, windowing, FFT and couplet being taken advantage of fusion forms the static human body vital signs spectrogram that comprises respiratory rate.
(6) the apparent control image conversion human-computer interaction interface of the apparent control terminal of PC carries out the image conversion demonstration with the signal processing results under the work at present waveform, for the step frequency continuous wave, shows the movement human track; For single carrier frequency continuous wave, show static human body vital signs spectrogram.
Claims (3)
1. the buildings perspective sniffer based on hybrid waveform is characterized in that, comprises transmitter, two passage receivers, data acquisition and time-sequence control module, signal processor, shows control terminal, power module, emitting antenna and double reception antenna; The local oscillation signal output terminal of transmitter links to each other with the local oscillation signal input end of two passage receivers; The output terminal of transmitter links to each other with emitting antenna; The input end of receiver links to each other with the double reception antenna; Data acquisition links to each other with the data output end of two passage receivers with the data input pin of time-sequence control module; Data acquisition links to each other with the controlled variable output terminal of apparent control terminal with the controlled variable input end of time-sequence control module; Showing control terminal links to each other with signal processor; Data acquisition links to each other with the data receiver of signal processor with the data output end of time-sequence control module, and data acquisition links to each other with the steering order receiving end of transmitter, the steering order receiving end of two passage receivers respectively with the steering order output terminal of time-sequence control module, and power module links to each other with the double reception antenna with time-sequence control module, signal processor, apparent control terminal, power module, emitting antenna with transmitter, two passage receivers, data acquisition respectively;
Said transmitter comprises with reference to crystal oscillator RIF, Direct Digital Frequency Synthesizers DDS, on-site programmable gate array FPGA, two frequency multiplication filtering amplifications link, power divider and attenuators; The output terminal of RIF links to each other with the input end that link is amplified in first frequency multiplication filtering; The output terminal that link is amplified in first frequency multiplication filtering links to each other with the reference signal input end of DDS; The steering order input end of FPGA links to each other with the steering order output terminal of sequential control with data acquisition; The steering order output terminal of FPGA links to each other with the steering order input end of DDS and the steering order input end of attenuator respectively; The output terminal of DDS links to each other with the input end that link is amplified in second frequency multiplication filtering, and the output terminal of second frequency multiplication filtering amplification link links to each other with the input end of power divider, and an output terminal of power divider links to each other with the input end of attenuator; Another output terminal of power divider links to each other with the local oscillator input end of two IQ two-way detuners of receiver respectively, and the output terminal of attenuator links to each other with emitting antenna; DDS output step frequency continuous wave and single carrier frequency continuous wave;
Said two-channel receiver comprises 2 low noise amplifier LNA, 2 BPF. BPF, 2 IQ detuners, 4 change-over switches, 4 step frequency low-pass filters, 4 single carrier frequency low-pass filters; The input end of two LNA links to each other with two receiving antennas respectively; The output terminal of two LNA links to each other with the input end of two BPF respectively; The output terminal of two BPF links to each other with the input end of two IQ detuners respectively; The I road output terminal of IQ detuner, Q road output terminal link to each other with the input end of corresponding change-over switch respectively; Two output terminals of change-over switch connect 1 step frequency low-pass filter and 1 single carrier frequency low-pass filter respectively, and the output terminal of step frequency low-pass filter and single carrier frequency low-pass filter links to each other with the data input pin of data acquisition with the analog to digital converter ADC of time-sequence control module;
Described data acquisition and time-sequence control module comprise 4 analog to digital converter ADC, on-site programmable gate array FPGA, USB peripheral hardware; The input end of ADC links to each other with the output terminal of the low-pass filter of receiver; The data input pin of FPGA links to each other with the output terminal of ADC; The steering order output terminal of FPGA links to each other with the steering order input end of the FPGA of transmitter; The data output end of FPGA links to each other with the USB peripheral hardware with the controlled variable input end, and the data output end of USB peripheral hardware links to each other with signal processor, and the controlled variable input end of USB peripheral hardware links to each other with apparent control terminal.
2. a kind of according to claim 1 buildings perspective sniffer based on hybrid waveform is characterized in that it is that link is amplified in nine frequency multiplication filtering that link is amplified in said frequency multiplication filtering.
3. like the said a kind of buildings perspective sniffer of claim 2 based on hybrid waveform; It is characterized in that; Said Direct Digital Frequency Synthesizers DDS exports the step frequency continuous wave of 88.89MHz-200MHz and at the resident single carrier frequency continuous wave of 88.89MHz, 144.45MHz and three frequencies of 200MHz, the step frequency continuous wave of 88.89MHz-200MHz amplifies the step frequency continuous wave of link output 0.8 to 1.8GHz through nine frequency multiplication filtering; 88.89MHz, single carrier frequency continuous wave of 144.45MHz and 200MHz amplifies single carrier frequency continuous wave of link output 0.8GHz, 1.3GHz and 1.8GHz through nine frequency multiplication filtering; Said step frequency low-pass filter is the low-pass filter of cutoff frequency 1MHz, the low-pass filter that said single carrier frequency low-pass filter is cutoff frequency 10Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220190721 CN202583456U (en) | 2012-04-28 | 2012-04-28 | Building perspective detection device based on hybrid waveforms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220190721 CN202583456U (en) | 2012-04-28 | 2012-04-28 | Building perspective detection device based on hybrid waveforms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202583456U true CN202583456U (en) | 2012-12-05 |
Family
ID=47252856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220190721 Expired - Fee Related CN202583456U (en) | 2012-04-28 | 2012-04-28 | Building perspective detection device based on hybrid waveforms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202583456U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104166138A (en) * | 2014-08-13 | 2014-11-26 | 芜湖航飞科技股份有限公司 | Ship-borne radar |
| CN105629227A (en) * | 2016-01-21 | 2016-06-01 | 浙江大学 | Partition human body motion detection method based on continuous wavelet transformation |
| CN105629228A (en) * | 2016-01-21 | 2016-06-01 | 浙江大学 | Partition human body motion detection method based on k-means clustering and Bayes classification |
| CN105708471A (en) * | 2016-01-21 | 2016-06-29 | 浙江大学 | Wall-across human body motion detection method based on short-time Fourier transform |
| CN105738862A (en) * | 2016-01-21 | 2016-07-06 | 浙江大学 | Behind-the-wall human movement orientation detection method based on dynamic time warping |
| CN109031277A (en) * | 2018-06-21 | 2018-12-18 | 电子科技大学 | A kind of through-wall radar multi-Target Image domain robust tracking method |
| CN109164447A (en) * | 2018-09-26 | 2019-01-08 | 安徽博微长安电子有限公司 | The electromagnetic spectrum ferreting device of L-band low-altitude surveillance radar |
-
2012
- 2012-04-28 CN CN 201220190721 patent/CN202583456U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104166138A (en) * | 2014-08-13 | 2014-11-26 | 芜湖航飞科技股份有限公司 | Ship-borne radar |
| CN105629227A (en) * | 2016-01-21 | 2016-06-01 | 浙江大学 | Partition human body motion detection method based on continuous wavelet transformation |
| CN105629228A (en) * | 2016-01-21 | 2016-06-01 | 浙江大学 | Partition human body motion detection method based on k-means clustering and Bayes classification |
| CN105708471A (en) * | 2016-01-21 | 2016-06-29 | 浙江大学 | Wall-across human body motion detection method based on short-time Fourier transform |
| CN105738862A (en) * | 2016-01-21 | 2016-07-06 | 浙江大学 | Behind-the-wall human movement orientation detection method based on dynamic time warping |
| CN105629227B (en) * | 2016-01-21 | 2018-04-27 | 浙江大学 | Partition wall body movement detection method based on continuous wavelet transform |
| CN105629228B (en) * | 2016-01-21 | 2018-04-27 | 浙江大学 | Partition wall body movement detection method based on K mean cluster and Bayes's classification |
| CN105708471B (en) * | 2016-01-21 | 2018-07-17 | 浙江大学 | Partition wall body movement detection method based on Short Time Fourier Transform |
| CN109031277A (en) * | 2018-06-21 | 2018-12-18 | 电子科技大学 | A kind of through-wall radar multi-Target Image domain robust tracking method |
| CN109031277B (en) * | 2018-06-21 | 2022-05-31 | 电子科技大学 | Multi-target image domain steady tracking method for through-wall radar |
| CN109164447A (en) * | 2018-09-26 | 2019-01-08 | 安徽博微长安电子有限公司 | The electromagnetic spectrum ferreting device of L-band low-altitude surveillance radar |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202583456U (en) | Building perspective detection device based on hybrid waveforms | |
| CN212433393U (en) | Radar interference simulation equipment | |
| CN213210458U (en) | Radar target simulation and interference countermeasure training system | |
| US9417315B2 (en) | Radar system and methods for making and using same | |
| CN102707272B (en) | Real-time processing system for radar signals of outer radiation source based on GPU (Graphics Processing Unit) and processing method | |
| CN101458326B (en) | Life detecting device based on pseudocode phase-modulated continuous wave system | |
| US20060066485A1 (en) | Wireless tracking system based upon phase differences | |
| Tan et al. | Wi-Fi based passive human motion sensing for in-home healthcare applications | |
| CN103941296A (en) | Double-frequency double-antenna ground penetrating radar | |
| CN108680909B (en) | Device and method for realizing performance monitoring of wave-measuring radar | |
| CN104090274A (en) | Outer transmitter-based radar system based on multi-FM broadcasting and signal processing method | |
| CN106019285A (en) | Micro unmanned aerial vehicle millimeter-wave radar | |
| CN112882018A (en) | Ocean and ionosphere integrated detection high-frequency radar system and control method thereof | |
| CN106788506A (en) | A kind of broadband integration reconnaissance receiver and its method of work | |
| CN108919251A (en) | One kind being based on LFMCW radar detection track devices | |
| Reinisch et al. | Advancing digisonde technology: The DPS-4D | |
| CN104678364A (en) | S-band passive radar interception receiver and signal processing method thereof based on FPGA (Field Programmable Gate Array) | |
| CN103983967A (en) | Multi-target micro-distortion time-sharing telemetering method and system | |
| CN206773180U (en) | Broadband radar target simulated radar echo equipment | |
| CN111983567A (en) | Radar signal micro-feature analysis system based on digital filtering | |
| CN103902133A (en) | Electromagnetic touch receiving device and electromagnetic touch receiving method | |
| CN104181527A (en) | Indoor low-speed target intrusion detection radar device and detection method | |
| CN101283293B (en) | Lightning detection | |
| Saad et al. | An efficient FPGA‐based implementation of UWB radar system for through‐wall imaging | |
| Tang et al. | Small phased array radar based on AD9361 For UAV detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |