CN110109076A - The object detection method inhibited based on phase cancellation agile coherent radar clutter - Google Patents
The object detection method inhibited based on phase cancellation agile coherent radar clutter Download PDFInfo
- Publication number
- CN110109076A CN110109076A CN201910332718.3A CN201910332718A CN110109076A CN 110109076 A CN110109076 A CN 110109076A CN 201910332718 A CN201910332718 A CN 201910332718A CN 110109076 A CN110109076 A CN 110109076A
- Authority
- CN
- China
- Prior art keywords
- pulse
- echo
- signal
- vector
- radar
- 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.)
- Granted
Links
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
- 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
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
-
- 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
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
-
- 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
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
- G01S7/418—Theoretical aspects
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 kind of object detection methods inhibited based on phase cancellation agile coherent radar clutter.Realize step are as follows: sampling is carried out to radar echo pulse signal first and pulse is compressed to obtain pulse pressure echo, clutter recognition is carried out to pulse pressure echo using phase cancellation techniques, and phasing is carried out to echo by phase compensation, finally by Nonuniform fast Fourier transform and mean value class CFAR detection method, the correlative accumulation and detection moving target of echo-signal are realized.It solves in art methods in the insufficient situation of echo data, can not accurately estimate the Doppler frequency range of clutter, very deep clutter recess cannot be formed in practical main clutter area, thus the problem of clutter cannot be effectively inhibited.The present invention is not necessarily to a large amount of echo datas, can form very deep clutter recess in practical main clutter area, effectively inhibit clutter.
Description
Technical field
The invention belongs to field of signal processing, further relate to a kind of Radar Signal Processing Technology field based on phase
Offset the object detection method of agile coherent radar clutter inhibition.This method can be used for agile coherent radar system clutter reduction,
Realize the detection to moving target.
Background technique
Agile coherent radar passes through the carrier frequency for changing adjacent transmission signal, so that other side's radar jammer can not be accurate
The frequency of measurement transmitting signal, evades the purpose largely interfered to realize, is a kind of highly effective antijamming measure.But
It is, due to emitting the carrier frequency agile of signal, to cause echo-signal phase discontinuous, so that agile coherent radar can not be using tradition
Moveing target indication (Moving Target Indication, MTI), adaptive Moveing target indication (Adapting Moving
Target Indication, AMTI) etc. technologies clutter reduction.Therefore, clutter reduction technology is agile coherent radar detection target
The critical issue faced.
Patent document " coherent frequency-agile radar the clutter suppression method " (application number of Tsinghua University in its application
201510228106.1, application publication number CN104931938 A) in disclose a kind of agile coherent radar clutter suppressing method.
This method is first according to the Doppler frequency range of the index parameter of radar antenna and motion state, echo data estimation clutter.
Then clutter recognition filter is constructed according to the Doppler frequency range of clutter to be filtered echo, realize the clutter suppression of signal
System and moving object detection.Shortcoming existing for this method is to need a large amount of echo data, and insufficient in echo data
In the case of, it can not accurately estimate the Doppler frequency range of clutter, very deep clutter recess cannot be formed in practical main clutter area,
To which clutter cannot be effectively inhibited.
Patent document " the ground bounce removal method based on the prewhitening filter " (application number of Institutes Of Technology Of Nanjing in its application
201610701166.5, application publication number CN106199539A) in disclose a kind of ground bounce removal based on prewhitening filter
Method.The radar return data of slow time dimension are established as autoregressive process by this method, pass through the Burg based on Third-order cumulants
Algorithm estimates Parameters of Autoregressive Models, constructs prewhitening filter by Parameters of Autoregressive Models, is filtered using the albefaction constructed
Wave device dispersion clutter power makes it in the form of the approximate white noise of frequency domain representation, realizes and carries out to the clutter that zero-frequency collects around
Inhibit.Shortcoming existing for this method is, just for the situation that radar receiver is static, when radar receiver movement,
Clutter spectrum can broaden, and the clutter other than zero-frequency cannot effectively inhibit, showed in amplitude and target energy
Approximation is easy to produce false-alarm.
Summary of the invention
It is an object of the invention to be directed to the deficiency of above-mentioned prior art, propose a kind of based on phase cancellation agile coherent
The object detection method that radar clutter inhibits carries out clutter recognition using a large amount of echo datas construction clutter recognition matrix to abandon
Method.This method directly carries out clutter recognition to Signal for Pulse using phase cancellation techniques.
Realizing the basic ideas of the object of the invention is, carries out sampling to radar echo pulse signal first and pulse is compressed
To pulse pressure echo, clutter recognition is carried out to pulse pressure echo using phase cancellation techniques, and phase is carried out to echo by phase compensation
Bit correction realizes the correlative accumulation of echo-signal finally by Nonuniform fast Fourier transform and mean value class CFAR detection method
With detection moving target.
To achieve the above object, the present invention includes the following steps:
(1) radar transmitted pulse signal is generated:
Radar transmitter generates N number of transmitting pulse signal, and carrier frequency is identical two-by-two, is followed successively byN
For the even number arbitrarily chosen in [32,128]；
(2) pulse echo signal is mixed:
(2a) radar receiver receives pulse echo signal, and by pulse echo signal and radar transmitted pulse signal phase
Multiply, obtains N number of radar base band echo-signal；
(2b) to emit twice of pulse signal bandwidth of sample frequency, radar receiver believes obtained radar base band echo
It number is sampled, N number of radar base band echo-signal vector will be obtained；
(3) pulse compression is carried out to radar base band echo-signal vector:
It will emit after pulse signal takes complex conjugate and be multiplied with each radar base band echo-signal Vector convolution, obtain N number of time
Wave Signal for Pulse vector；
(4) phase cancellation is carried out to echo Signal for Pulse vector:
(4a) in echo Signal for Pulse vector per same carrier two-by-two in second echo Signal for Pulse vector, subtract the
One echo Signal for Pulse vector, the echo Signal for Pulse vector after obtaining phase cancellation；
Echo Signal for Pulse vector after phase cancellation is arranged successively by (4b) along longitudinal direction, the pulse pressure after obtaining phase cancellation
Matrix；
(5) velocity to moving target is calculated:
(5a) chooses column corresponding to the maximum value in all modulus value to each of pulse pressure matrix column vector modulus value
The transposition of the column vector is multiplied by vector with basic matrix, obtains transformation vector；
(5b) chooses the maximum value in all modulus value to transformation each of vector element modulus value, choose transformation to
The lower target numerical tape is entered following formula and calculates movement by lower target numerical value corresponding to the element equal with the maximum value modulus value in amount
Target velocity；
Wherein, r indicates to convert lower target numerical value corresponding to element equal with the maximum value modulus value in vector, and v is indicated
Velocity to moving target, c indicate the light velocity, TrIndicate the radar transmitted pulse signal repetition period, Δ f indicates radar transmitter frequency steps
Into minimum interval frequency；
(6) phasing is carried out to radar pulse pressure echo:
Each of pulse pressure matrix column vector is sought into Hadamard product with compensation vector respectively, the column after obtaining phase compensation
Vector transversely successively sorts the column vector after all phase compensations, the pulse pressure matrix after obtaining phase compensation；
(7) moving target is detected:
(7a) carries out Nonuniform fast Fourier transform to the pulse pressure matrix after phase compensation along longitudinal direction, obtains correlative accumulation square
Battle array；
(7b) uses mean value class CFAR detection method, detects the moving target in correlative accumulation matrix.
Compared with the prior art, the present invention has the following advantages:
First, the present invention carries out clutter recognition to echo Signal for Pulse vector by phase cancellation, overcomes the prior art
According to the Doppler frequency range of the index parameter of radar antenna and motion state, echo data estimation clutter, then according to miscellaneous
The Doppler frequency range construction clutter recognition filter of wave is filtered echo, realizes the clutter recognition and movement mesh of signal
Mark detection, and in the insufficient situation of echo data, it can not accurately estimate the Doppler frequency range of clutter, it cannot be in practical master
Clutter area forms very deep clutter recess, thus the shortcomings that clutter cannot be effectively inhibited, so that the present invention has without a large amount of
The advantages of echo data can form very deep clutter recess in practical main clutter area, effectively inhibit clutter.
Second, phasing is carried out to radar pulse pressure echo, it is static just for radar receiver to overcome the prior art
The case where, when radar receiver movement, clutter spectrum can be broadened, and the clutter other than zero-frequency cannot effectively press down
The shortcomings that system shows approximate with target energy in amplitude, is easy to produce false-alarm, so that present invention can be suitably applied to radar reception
The case where machine moves has the clutter being able to suppress other than zero-frequency, it is not easy to the advantages of generating false-alarm.
Detailed description of the invention
Fig. 1 is flow chart of the invention；
Fig. 2 is analogous diagram of the invention.
Specific embodiment
With reference to the accompanying drawing, the invention will be described in further detail.
Referring to attached drawing 1, specific steps of the invention are further described.
Step 1, radar transmitted pulse signal is generated.
Radar transmitter generates N number of transmitting pulse signal, and carrier frequency is identical two-by-two, is followed successively byN
For the even number arbitrarily chosen in [32,128].
Step 2, pulse echo signal is mixed.
Radar receiver receives pulse echo signal, and by pulse echo signal and radar transmitted pulse signal multiplication, obtains
To N number of radar base band echo-signal.
To emit twice of pulse signal bandwidth of sample frequency, radar receiver by obtained radar base band echo-signal into
Row sampling, will obtain N number of radar base band echo-signal vector.
Step 3, pulse compression is carried out to radar base band echo-signal vector.
It will emit after pulse signal takes complex conjugate and be multiplied with each radar base band echo-signal Vector convolution, obtain N number of time
Wave Signal for Pulse vector.
Step 4, phase cancellation is carried out to echo Signal for Pulse vector.
With second echo Signal for Pulse vector in same carrier two-by-two every in echo Signal for Pulse vector, first is subtracted
Echo Signal for Pulse vector, the echo Signal for Pulse vector after obtaining phase cancellation.
Echo Signal for Pulse vector after phase cancellation is arranged successively along longitudinal direction, the pulse pressure square after obtaining phase cancellation
Battle array.
Step 5, velocity to moving target is calculated.
To each of pulse pressure matrix column vector modulus value, choose column corresponding to the maximum value in all modulus value to
Amount, the transposition of the column vector is multiplied with basic matrix, obtains transformation vector.
The basic matrix is as follows:
Wherein, D indicates that basic matrix, e indicate that, using natural constant as the index operation at bottom, j indicates imaginary unit's symbol, π table
Show that pi, N indicate the number of transmitting pulse signal,Respectively indicate the carrier frequency in transmitting pulse signal, fminTable
Show the minimum value of carrier frequency in transmitting pulse signal, Δ f indicates the minimum interval frequency of radar transmitter frequency stepping.
To each of transformation vector element modulus value, the maximum value in all modulus value is chosen, is chosen in transformation vector
The lower target numerical tape is entered following formula and calculates moving target by lower target numerical value corresponding to the element equal with the maximum value modulus value
Speed:
Wherein, r indicates to convert lower target numerical value corresponding to element equal with the maximum value modulus value in vector, and v is indicated
Velocity to moving target, c indicate the light velocity, TrIndicate the radar transmitted pulse signal repetition period, Δ f indicates radar transmitter frequency steps
Into minimum interval frequency.
Step 6, phasing is carried out to radar pulse pressure echo.
Each of pulse pressure matrix column vector is sought into Hadamard product with compensation vector respectively, the column after obtaining phase compensation
Vector transversely successively sorts the column vector after all phase compensations, the pulse pressure matrix after obtaining phase compensation.
The compensation vector is as follows:
Wherein, η indicates compensation vector, and e indicates that, using natural constant as the index operation at bottom, j indicates imaginary unit's symbol, π
Indicate pi,The carrier frequency in transmitting pulse signal is respectively indicated, v indicates velocity to moving target, TrIndicate thunder
Up to the transmitting pulse signal repetition period, c indicates that the light velocity, T indicate transposition operation.
Step 7, moving target is detected.
Nonuniform fast Fourier transform is carried out to the pulse pressure matrix after phase compensation along longitudinal direction, obtains correlative accumulation matrix.
Using mean value class CFAR detection method, the moving target in correlative accumulation matrix is detected.
The mean value class CFAR detection method is that any one element is as to be detected in selection correlative accumulation matrix
Element chooses the top, the following, left side, each 2 elements in the right of element to be detected as protection element, ask element to be detected with
The average value for protecting all elements other than element, subtracts the correlative accumulation matrix that element to be detected is detected for the average value
In moving target.
Effect of the invention is described further below with reference to emulation experiment:
1. emulation experiment condition:
The hardware platform of emulation experiment of the invention are as follows: processor be 8400 CPU of Intel i5, dominant frequency 2.8GHz,
Memory 32GB.
The software platform of emulation experiment of the invention are as follows: 10 operating system of Windows and MATLAB R2016a.
The minimum value of carrier frequency is 14GHz, transmitting pulse letter in transmitting pulse signal used in emulation experiment of the invention
Number number be 128, the minimum interval frequency of radar transmitter frequency stepping is 10MHz, and signal-to-noise ratio is -16dB, signal to noise ratio is -
20dB, radar receiver radial velocity are 1200m/s, and target initial distance is 4km, and moving target radial velocity is 800m/s.
2. emulation content and interpretation of result:
Emulation experiment of the present invention be using the prior art and method of the invention respectively to received pulse echo signal into
It is as shown in Figure 2 to obtain object detection results for row moving object detection.Wherein, Fig. 2 (a) is using the prior art to received arteries and veins
The testing result figure that echo-signal carries out moving object detection is rushed, Fig. 2 (b) is to return using method of the invention to received pulse
The testing result figure of wave signal progress moving object detection.
In emulation experiment of the present invention, the prior art of use refers to, Quan Yinghui et al. is in " Quan Y, Li Y
C,Wu Y,et al.Moving target detection for frequency agility radar by sparse
Reconstruction [J] .Review of Scientific Instruments, 2016,87 (9): is mentioned in 811-815. "
The sparse reconstitution movement algorithm of target detection of two dimension.
The abscissa of Fig. 2 (a) and Fig. 2 (b) indicates that high-resolution unit, ordinate indicate coarse resolution unit, column coordinate
Indicate amplitude.From Fig. 2 (a) as can be seen that detecting many discrete clutter targets in the 289th coarse resolution unit, move
Target in the too small secondary lobe platform for being hidden in clutter target of amplitude due to that can not differentiate.Fig. 2 (b) is to use method of the invention
The result figure that moving object detection is carried out to received pulse echo signal is compared with Fig. 2 (a), it can be seen that thick at the 289th
Discrete clutter target amplitude in resolution cell is greatly reduced, so moving target can be arrived by detections of radar.
Claims (4)
1. a kind of object detection method inhibited based on phase cancellation agile coherent radar clutter, which is characterized in that echo arteries and veins
It presses signal vector to carry out phase cancellation, phasing is carried out to radar pulse pressure echo, the step of this method includes the following:
(1) radar transmitted pulse signal is generated:
Radar transmitter generates N number of transmitting pulse signal, and carrier frequency is identical two-by-two, is followed successively byN be
[32,128] even number arbitrarily chosen in；
(2) pulse echo signal is mixed:
(2a) radar receiver receives pulse echo signal, and by pulse echo signal and radar transmitted pulse signal multiplication, obtains
To N number of radar base band echo-signal；
(2b) to emit twice of pulse signal bandwidth of sample frequency, radar receiver by obtained radar base band echo-signal into
Row sampling, obtains N number of radar base band echo-signal vector；
(3) pulse compression is carried out to radar base band echo-signal vector:
It will emit after pulse signal takes complex conjugate and be multiplied with each radar base band echo-signal Vector convolution, obtain N number of echo arteries and veins
Press signal vector；
(4) phase cancellation is carried out to echo Signal for Pulse vector:
(4a) in echo Signal for Pulse vector per same carrier two-by-two in second echo Signal for Pulse vector, subtract first
Echo Signal for Pulse vector, the echo Signal for Pulse vector after obtaining phase cancellation；
Echo Signal for Pulse vector after phase cancellation is arranged successively by (4b) along longitudinal direction, the pulse pressure square after obtaining phase cancellation
Battle array；
(5) velocity to moving target is calculated:
(5a) to each of pulse pressure matrix column vector modulus value, choose column corresponding to the maximum value in all modulus value to
Amount, the transposition of the column vector is multiplied with basic matrix, obtains transformation vector；
(5b) chooses the maximum value in all modulus value to each of transformation vector element modulus value, chooses in transformation vector
The lower target numerical tape is entered following formula and calculates moving target by lower target numerical value corresponding to the element equal with the maximum value modulus value
Speed；
Wherein, v indicates that velocity to moving target, c indicate that the light velocity, r indicate element institute equal with maximum value modulus value in transformation vector
Corresponding lower target numerical value, TrIndicate the radar transmitted pulse signal repetition period, Δ f indicates the stepping of radar transmitter frequency most
Closely-spaced frequency；
(6) phasing is carried out to radar pulse pressure echo:
Each of pulse pressure matrix column vector is sought into Hadamard product with compensation vector respectively, column after obtaining phase compensation to
Amount, the column vector after all phase compensations is transversely successively sorted, the pulse pressure matrix after obtaining phase compensation；
(7) moving target is detected:
(7a) carries out Nonuniform fast Fourier transform to the pulse pressure matrix after phase compensation along longitudinal direction, obtains correlative accumulation matrix；
(7b) uses mean value class CFAR detection method, detects the moving target in correlative accumulation matrix.
2. the object detection method according to claim 1 inhibited based on phase cancellation agile coherent radar clutter, special
Sign is that basic matrix described in step (5a) is as follows:
Wherein, D indicates that basic matrix, e are indicated using natural constant as the index operation at bottom, and j indicates that imaginary unit's symbol, π indicate circle
Frequency, N indicate the number of transmitting pulse signal,Respectively indicate the carrier frequency in transmitting pulse signal, fminIndicate hair
The minimum value of carrier frequency in pulse signal is penetrated, Δ f indicates the minimum interval frequency of radar transmitter frequency stepping.
3. the object detection method according to claim 1 inhibited based on phase cancellation agile coherent radar clutter, special
Sign is that compensation vector described in step (6) is as follows:
Wherein, η indicates compensation vector, and e is indicated using natural constant as the index operation at bottom, and j indicates that imaginary unit's symbol, π indicate
Pi,The carrier frequency in transmitting pulse signal is respectively indicated, v indicates velocity to moving target, TrIndicate radar hair
It penetrates the pulse signal repetition period, c indicates that the light velocity, T indicate transposition operation.
4. the object detection method according to claim 1 inhibited based on phase cancellation agile coherent radar clutter, special
Sign is that mean value class CFAR detection method described in step (7b) is to choose any one element in correlative accumulation matrix
As element to be detected, choose the top, the following, left side, each 2 elements in the right of element to be detected as protection element, ask to
The average value of all elements other than detection elements and protection element, subtracts the phase that element to be detected is detected for the average value
Moving target in ginseng accumulation matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910332718.3A CN110109076B (en) | 2019-04-24 | 2019-04-24 | Target detection method based on phase cancellation agile coherent radar clutter suppression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910332718.3A CN110109076B (en) | 2019-04-24 | 2019-04-24 | Target detection method based on phase cancellation agile coherent radar clutter suppression |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110109076A true CN110109076A (en) | 2019-08-09 |
| CN110109076B CN110109076B (en) | 2022-04-08 |
Family
ID=67486504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910332718.3A Active CN110109076B (en) | 2019-04-24 | 2019-04-24 | Target detection method based on phase cancellation agile coherent radar clutter suppression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110109076B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110865363A (en) * | 2019-11-01 | 2020-03-06 | 武汉滨湖电子有限责任公司 | Moving target display and detection synthesis method |
| CN111679252A (en) * | 2020-06-18 | 2020-09-18 | 宫健 | Method and device for resisting digital radio frequency storage interference, electronic equipment and storage medium |
| CN112363155A (en) * | 2020-11-05 | 2021-02-12 | 西安电子科技大学 | Inter-pulse frequency agility radar speed measurement method based on non-uniform Fourier transform algorithm |
| CN113238225A (en) * | 2019-08-23 | 2021-08-10 | 长沙天仪空间科技研究院有限公司 | Radar for moving target detection |
| CN113589250A (en) * | 2021-07-29 | 2021-11-02 | 上海无线电设备研究所 | Sparse learning coherent agile frequency conversion radar distance high-resolution processing method |
| CN114325633A (en) * | 2022-03-16 | 2022-04-12 | 西安电子科技大学 | Coherent processing method and device for dual-band radar |
| CN115061090A (en) * | 2022-04-13 | 2022-09-16 | 中国人民解放军国防科技大学 | Method, device, system and medium for suppressing clutter on surface layer of holographic penetration imaging radar |
| CN115453490A (en) * | 2022-11-10 | 2022-12-09 | 艾索信息股份有限公司 | Coherent accumulation method, device and equipment based on radar signals and storage medium |
| CN115993586A (en) * | 2023-03-24 | 2023-04-21 | 湖南华诺星空电子技术股份有限公司 | Slope radar monitoring method and device with micro-deformation monitoring and moving target detection |
| CN116106852A (en) * | 2023-04-12 | 2023-05-12 | 中国人民解放军63921部队 | Method and device for determining airborne main clutter channel and electronic equipment |
| CN115061090B (en) * | 2022-04-13 | 2024-09-27 | 中国人民解放军国防科技大学 | Holographic penetration imaging radar surface clutter suppression method, device, system and medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5559516A (en) * | 1981-11-27 | 1996-09-24 | Northrop Grumman Corporation | Dual cancellation interferometric AMTI radar |
| US7460059B1 (en) * | 2006-10-25 | 2008-12-02 | Sandia Corporation | Removing interfering clutter associated with radar pulses that an airborne radar receives from a radar transponder |
| CN104931938A (en) * | 2015-05-07 | 2015-09-23 | 清华大学 | Coherent agile frequency radar clutter inhibition method and system |
| CN105785338A (en) * | 2016-03-09 | 2016-07-20 | 西安电子科技大学 | Method for optimizing carrier frequency of frequency-agile radar |
| CN106646446A (en) * | 2017-03-15 | 2017-05-10 | 中国人民解放军国防科学技术大学 | Detection method for moving target of pulse compression frequency-agile radar |
| CN109143179A (en) * | 2018-07-26 | 2019-01-04 | 清华大学 | A kind of frequency-agile radar signal processing method and device based on change repetition technology |
| CN109581313A (en) * | 2018-11-26 | 2019-04-05 | 西安电子科技大学 | A kind of object detection method of arteries and veins group frequency agile radar |
-
2019
- 2019-04-24 CN CN201910332718.3A patent/CN110109076B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5559516A (en) * | 1981-11-27 | 1996-09-24 | Northrop Grumman Corporation | Dual cancellation interferometric AMTI radar |
| US7460059B1 (en) * | 2006-10-25 | 2008-12-02 | Sandia Corporation | Removing interfering clutter associated with radar pulses that an airborne radar receives from a radar transponder |
| CN104931938A (en) * | 2015-05-07 | 2015-09-23 | 清华大学 | Coherent agile frequency radar clutter inhibition method and system |
| CN105785338A (en) * | 2016-03-09 | 2016-07-20 | 西安电子科技大学 | Method for optimizing carrier frequency of frequency-agile radar |
| CN106646446A (en) * | 2017-03-15 | 2017-05-10 | 中国人民解放军国防科学技术大学 | Detection method for moving target of pulse compression frequency-agile radar |
| CN109143179A (en) * | 2018-07-26 | 2019-01-04 | 清华大学 | A kind of frequency-agile radar signal processing method and device based on change repetition technology |
| CN109581313A (en) * | 2018-11-26 | 2019-04-05 | 西安电子科技大学 | A kind of object detection method of arteries and veins group frequency agile radar |
Non-Patent Citations (3)
| Title |
|---|
| 曲长文等: "基于相位调制的相干雷达对消干扰分析", 《电子科技大学学报》 * |
| 胡杰民等: "基于波形预先设计和相位对消技术的步进频信号ISAR成像研究", 《电子学报》 * |
| 谭信等: "捷变频雷达信号处理仿真", 《舰船电子对抗》 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113238225B (en) * | 2019-08-23 | 2024-05-10 | 长沙天仪空间科技研究院有限公司 | Radar for moving target detection |
| CN113238225A (en) * | 2019-08-23 | 2021-08-10 | 长沙天仪空间科技研究院有限公司 | Radar for moving target detection |
| CN110865363A (en) * | 2019-11-01 | 2020-03-06 | 武汉滨湖电子有限责任公司 | Moving target display and detection synthesis method |
| CN111679252A (en) * | 2020-06-18 | 2020-09-18 | 宫健 | Method and device for resisting digital radio frequency storage interference, electronic equipment and storage medium |
| CN112363155B (en) * | 2020-11-05 | 2022-04-19 | 西安电子科技大学 | Inter-pulse frequency agility radar speed measurement method based on non-uniform Fourier transform algorithm |
| CN112363155A (en) * | 2020-11-05 | 2021-02-12 | 西安电子科技大学 | Inter-pulse frequency agility radar speed measurement method based on non-uniform Fourier transform algorithm |
| CN113589250A (en) * | 2021-07-29 | 2021-11-02 | 上海无线电设备研究所 | Sparse learning coherent agile frequency conversion radar distance high-resolution processing method |
| CN113589250B (en) * | 2021-07-29 | 2024-02-23 | 上海无线电设备研究所 | Sparse learning coherent agile radar distance high-resolution processing method |
| CN114325633A (en) * | 2022-03-16 | 2022-04-12 | 西安电子科技大学 | Coherent processing method and device for dual-band radar |
| CN114325633B (en) * | 2022-03-16 | 2022-06-17 | 西安电子科技大学 | Coherent processing method and device for dual-band radar |
| CN115061090A (en) * | 2022-04-13 | 2022-09-16 | 中国人民解放军国防科技大学 | Method, device, system and medium for suppressing clutter on surface layer of holographic penetration imaging radar |
| CN115061090B (en) * | 2022-04-13 | 2024-09-27 | 中国人民解放军国防科技大学 | Holographic penetration imaging radar surface clutter suppression method, device, system and medium |
| CN115453490A (en) * | 2022-11-10 | 2022-12-09 | 艾索信息股份有限公司 | Coherent accumulation method, device and equipment based on radar signals and storage medium |
| CN115993586A (en) * | 2023-03-24 | 2023-04-21 | 湖南华诺星空电子技术股份有限公司 | Slope radar monitoring method and device with micro-deformation monitoring and moving target detection |
| CN116106852A (en) * | 2023-04-12 | 2023-05-12 | 中国人民解放军63921部队 | Method and device for determining airborne main clutter channel and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110109076B (en) | 2022-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110109076A (en) | The object detection method inhibited based on phase cancellation agile coherent radar clutter | |
| CN106646446B (en) | The moving target detection method of pulse compression frequency-agile radar | |
| CN106546965B (en) | Space-time adaptive processing method based on radar amplitude and Doppler-frequency estimation | |
| CN106597429A (en) | Radar-signal-processing-system-based speed tracking subsystem | |
| CN106814353A (en) | A kind of Radar Signal Processing System | |
| CN103116155A (en) | Homotype radar same frequency interference suppression method used for ship formation condition | |
| CN116068501B (en) | Method for generating anti-interference radio altimeter modulation signal | |
| CN106199549B (en) | A method of LFMCW radar signal-to-noise ratio is promoted using spectrum-subtraction | |
| CN109613506A (en) | A kind of random frequency hopping repetition agile radar target echo signal detection method | |
| CN114594428A (en) | Intermittent sampling interference suppression method based on linear frequency modulation in pulse-to-pulse frequency coding | |
| CN112881982B (en) | Method for restraining dense forwarding interference by frequency agile radar | |
| CN116087942B (en) | Method for generating modulating signal of aeronautical altimeter | |
| CN106872969A (en) | Radar target angle method of estimation based on MTD pulse accumulations and slip treatment | |
| CN109116326B (en) | Self-adaptive radar sea clutter suppression method based on median estimation | |
| CN105954729B (en) | The anti-distance of radar-velocity joint cheating interference adaptive iteration filtering method | |
| CN112485772A (en) | Clutter suppression method for inter-pulse frequency agility radar | |
| CN114578296B (en) | Intermittent sampling interference suppression method based on phase coding signal | |
| CN110109075B (en) | Frequency agile radar anti-interference method based on whitening filtering | |
| Lai et al. | Hilbert-Huang transform (HHT) processing of through-wall noise radar data for human activity characterization | |
| CN109738876A (en) | A kind of maneuvering target method for parameter estimation based on acceleration compensation | |
| Lei et al. | A TD-CF preprocessing method of FMCW radar for Dynamic Hand Gesture Recognition | |
| Li et al. | Pulse jamming suppression for airborne radar based on joint time-frequency analysis | |
| Dash et al. | Time frequency analysis of OFDM-LFM waveforms for multistatic airborne radar | |
| Liang et al. | Gulf of Mexico oil spill impact on beach soil: UWB radars-based approach | |
| Lukin et al. | Noise radar special issue—part 1 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |