WO2014048193A1 - 一种用于舰艇编队情况下同型雷达同频干扰抑制方法 - Google Patents
一种用于舰艇编队情况下同型雷达同频干扰抑制方法 Download PDFInfo
- Publication number
- WO2014048193A1 WO2014048193A1 PCT/CN2013/082129 CN2013082129W WO2014048193A1 WO 2014048193 A1 WO2014048193 A1 WO 2014048193A1 CN 2013082129 W CN2013082129 W CN 2013082129W WO 2014048193 A1 WO2014048193 A1 WO 2014048193A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frequency
- interference
- radar
- signal
- pulse
- Prior art date
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
- 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
- G01S7/023—Interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques
Definitions
- the invention belongs to the field of radar anti-jamming technology, and relates to a method for suppressing co-channel interference of the same type radar in the case of a ship formation, and particularly relates to a method for suppressing co-channel interference between linear frequency modulation pulse systems in the case of warship formation. To improve the formation radar network networking capabilities. Background technique
- LFM Linear Frequency Modulation
- the internal radar of the formation works under different transmission parameters, such as pulse repetition period, pulse width, pulse frequency modulation, etc. But often they are all in the same or similar working frequency bands.
- pulse repetition period the number of identical radars among ships within the formation is increasing, making the phenomenon of co-channel interference occur frequently.
- the same-frequency interference can be divided into the same-frequency synchronous interference and the same-frequency asynchronous interference.
- the co-channel interference between the two is the same-frequency synchronous interference; conversely, when the pulse repetition frequency differs by more than a certain value ( For the two radars identified, this value is determined), but when it is not an integer multiple relationship, the co-channel interference between the two is the same-frequency asynchronous interference.
- Radar co-channel interference will greatly reduce the networking capability of radar formation. Its impact on target detection is: 1) causing large false alarms, especially affecting the detection of small targets such as missiles; 2) destroying the ability of radar to continuously track targets .
- the method of suppressing co-channel interference by using signal processing means is to change the repetition frequency of the radar pulse to change the same-frequency synchronous interference into the same-frequency asynchronous interference, and distinguish and filter the pulse repetition frequency difference between the interference signal and the target echo.
- the main methods are the adjacent period anti-asynchronization algorithm and its improved algorithm mentioned in Chen Zhenglu and Xu Jian's paper "Research on anti-co-channel interference technology of shipborne pulse compression system radar" and Liu Dongli, Fu Jianguo, Suo Jidong The time domain impulse correlation method mentioned in the paper "Time Domain Multi-Pulse Correlation Method Anti-Radar Co-Channel Interference".
- Fractional Fourier Transform is a broad form of the Fourier transform that decomposes the signal onto a line sweep orthogonal basis function of the same modulation frequency and different starting frequencies. Therefore, the fractional Fourier transform has good energy focusing characteristics for chirp signals and is an effective tool for LFM signal detection and parameter estimation.
- FRFT Fractional Fourier Transform
- the present invention processes a signal using a discrete fractional Fourier transform, which is defined as:
- ⁇ and N are the input and output points t
- the invention is directed to the same-frequency asynchronous interference generated during the formation of the shipborne LFM pulse system radar.
- the problem that the suppression effect is not good when the interference quantity is large, the interference echo signal and the reception matching filter are mismatched In this paper, a method of combining the fractional Fourier transform domain filtering and the time domain anti-asynchronous processing to achieve the same-channel radar co-channel interference suppression method is proposed.
- the basic principle of the present invention is: when the internal radar of the formation cooperates with the working parameters, such as the modulation frequency and the pulse width are all known, firstly, according to the LFM interference signal, the fractional Fourier domain of the matching order is focused. In the fractional Fourier domain defocusing characteristics of other orders, the method of successive filtering is used to eliminate the interference different from the frequency of the radar transmitting signal to be observed according to the interference energy; secondly, after frequency domain processing The inverse of the signal is transformed into the time domain for matched filtering, using the time domain adjacent period anti-asynchronous
- the invention relates to a method for suppressing the same-frequency radar co-channel interference in the case of a ship formation, and the specific steps thereof are as follows:
- Q is the number of shipborne radar radars in the LFM pulse system working in the formation; ⁇ ( «) Gaussian white noise with zero mean and variance ⁇ 2 ;
- ⁇ , n. , k , f d , k and , n w , ( ) are the amplitude, delay and Doppler frequency of the target echo and the first interference of the received k-th radar pulse repetition period, respectively;
- Am is the fractional Fourier domain filter point; that is, the pulse width according to the first interference
- step S4) corresponding to each of Um obtained in step S2) and step S3)
- the notch with the same value is multiplied by the fractional Fourier domain to obtain X ⁇ (m), and then the discrete fractional Fourier transform of each order is obtained, and the periodic demodulation frequency is obtained.
- step S5 If all the values in ⁇ , ⁇ , ..., ⁇ are selected at this time and steps S2) ⁇ S4) are executed, the shell lj goes to step 4), otherwise one of ⁇ , ⁇ ,..., ⁇ is selected. For the unselected value, repeat steps S2) ⁇ S4), and substitute the result of step S4) as the current pulse period sampling sequence ⁇ ) into step S2;
- step 2 Remove the interference with the same frequency as the target echo signal, that is, step 2) adjust the frequency to the interference.
- the specific process is:
- step 4 The result of step 4) is adjusted to a frequency of ⁇ .
- the matching filter processing, for the obtained pulse pressure data) is obtained by subtracting the front and back period amplitudes.
- the unit larger than the threshold ⁇ considers the position to be interfered by the first period; for each, the values of the units larger than the threshold ⁇ are replaced by the values of the units corresponding to the subscripts, thereby filtering out the middle
- ⁇ threshold selection method is: set to a range of probability of false alarm P fa between 10 to 10-6, and then mixed with the variance of the noise and the false alarm probability in step 1) in accordance with the received echo signals to determine the decision threshold ⁇ ⁇ :
- the invention effectively solves the problem of co-channel interference suppression different from the frequency modulation of the radar echo signal by the fractional Fourier domain adaptive filtering, and simultaneously utilizes the reversibility of the fractional Fourier transform, and inversely transforms to the time domain and combines the traditional
- the anti-asynchronous anti-co-channel interference method further eliminates the same-frequency interference with the same frequency as the radar echo signal, and improves the anti-co-channel interference capability and formation networking capability of the ship-borne radar. as follows:
- a homogenous radar co-channel interference suppression method for a ship formation in the present invention can suppress multiple co-channel interferences different from the transmission signal modulation frequency;
- 1 is a flow chart of realizing the same-channel radar co-channel interference suppression method for a ship formation in the present invention
- Figure 2 is a modulation frequency region distribution using different interference suppression methods
- Figure 3 is a simplified flow chart of transform domain interference suppression
- Figure 4 is an effect diagram after coherent accumulation without co-channel asynchronous interference suppression processing
- Figure 5 is an effect diagram after coherent integration after the same-frequency asynchronous interference suppression processing
- LFM signal is represented as:
- ⁇ is the signal duration, /.
- ⁇ is the amplitude of the signal.
- the modulation frequency resolution is defined as the -3dB width value of the transform order at the initial frequency of the signal after the fractional Fourier transform.
- the FRFT of the signal at its matching initial frequency is in the form of a Fresnd function. According to the nature of the Fresnel function, it is found that the matching initial tuning frequency is reduced by -3dB and the width is ⁇ ⁇ :
- the multi-component LFM signal is first detected to determine whether there is interference of the modulation frequency.
- the strong signal component may obscure the weak signal component, it is difficult to achieve reliable detection of the weak signal component by directly adopting the peak detection method, and the method of sequentially eliminating the strong signal component is needed to improve the reliability of the weak signal detection.
- equation (11) can be turned into The coefficient reflects the degree of masking of the fractional Fourier spectrum of the component g(t) with respect to the component h(t). The smaller the mask, the smaller the degree of shading. It can be seen from equation (13) that the mutual shadowing between the LFM components in the fractional Fourier domain depends on the respective amplitude, modulation frequency, and sampling time and sampling frequency.
- the interference When the interference is far away from the target echo in the time domain, the more the number of points in the matching order fractional Fourier domain filter, the more energy is suppressed; when the interference is close to the target echo in the time domain, the interference has a serious impact.
- Signal detection when performing interference filtering in the fractional-order domain, the more the number of filtering points, the more the interference energy is reduced and the signal loss is also increased. Therefore, when selecting the fractional Fourier domain filter points, it is necessary to compromise the number of interference filter points in different cases.
- the receiver's input signal bandwidth is approximately 5 MHz, and the signal is sampled at a sampling rate of 10 MHz.
- the parameters of the target echo and interference are shown in Table 1.
- the signal-to-noise ratio can be obtained according to the power of the echo signal and the noise power.
- the signal-to-noise ratio refers to the input signal-to-noise ratio with reference to the bandwidth of the echo signal, and the signal-to-noise ratio of the signal is set. For SNR.
- step 3 For the interference with the modulation frequency of ⁇ ,... ⁇ , repeat the filtering process in step 3) for the data obtained in step 3).
- the order of the fractional Fourier transform is /3 ⁇ 4, ⁇ , /3 ⁇ 4, Filtering the time domain data after the interference with the frequency of ⁇ ,..., ⁇ ;
- the processing result is as shown in FIG. 5.
- Table 2 shows the results of FRFT-based processing gain simulation for single-cycle interference with different modulation frequencies.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210367703.9 | 2012-09-28 | ||
CN2012103677039A CN103116155A (zh) | 2012-09-28 | 2012-09-28 | 一种用于舰艇编队情况下的同型雷达同频干扰抑制方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014048193A1 true WO2014048193A1 (zh) | 2014-04-03 |
Family
ID=48414581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2013/082129 WO2014048193A1 (zh) | 2012-09-28 | 2013-08-23 | 一种用于舰艇编队情况下同型雷达同频干扰抑制方法 |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN103116155A (zh) |
WO (1) | WO2014048193A1 (zh) |
Cited By (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104880695A (zh) * | 2015-06-26 | 2015-09-02 | 中国船舶重工集团公司第七二四研究所 | 雷达窄脉冲剔除带外干扰抑制方法 |
CN106405512A (zh) * | 2016-09-30 | 2017-02-15 | 武汉滨湖电子有限责任公司 | 基于干扰谱和mtd滤波幅相特性的抗同频异步干扰方法 |
CN108872962A (zh) * | 2018-05-10 | 2018-11-23 | 南京航空航天大学 | 基于分数阶傅里叶变换的激光雷达微弱信号提取和分解方法 |
CN109061626A (zh) * | 2018-07-19 | 2018-12-21 | 武汉滨湖电子有限责任公司 | 一种步进频相参处理检测低信杂比动目标的方法 |
CN109188385A (zh) * | 2018-08-31 | 2019-01-11 | 西安电子科技大学 | 杂波背景下的高速微弱目标检测方法 |
CN109283507A (zh) * | 2018-12-03 | 2019-01-29 | 北京遥感设备研究所 | 一种基于时频域特征的雷达目标识别方法及系统 |
CN109521411A (zh) * | 2018-12-19 | 2019-03-26 | 西安电子科技大学 | 一种距离扩展目标的检测方法 |
CN110146851A (zh) * | 2019-05-17 | 2019-08-20 | 西安电子科技大学 | 一种基于数字统计特性分析改善雷达回波信噪比的方法 |
CN110412572A (zh) * | 2019-07-23 | 2019-11-05 | 中国科学院电子学研究所 | P波段合成孔径雷达成像干扰抑制方法 |
CN111551909A (zh) * | 2020-05-08 | 2020-08-18 | 中国电子科技集团公司第十四研究所 | 一种脉间捷变频lfm回波信号跨距离门走动的校正方法 |
CN111935038A (zh) * | 2020-08-03 | 2020-11-13 | 中国人民解放军国防科技大学 | 基于分数阶傅里叶变换的线性调频干扰消除方法 |
CN112014806A (zh) * | 2020-08-14 | 2020-12-01 | 西安电子科技大学 | 一种复杂干扰场景下的机载雷达无意干扰抑制方法 |
CN112083393A (zh) * | 2020-10-27 | 2020-12-15 | 西安电子科技大学 | 基于谱图平均时间特征的间歇采样转发干扰识别方法 |
CN112255596A (zh) * | 2020-11-09 | 2021-01-22 | 中国人民解放军战略支援部队航天工程大学 | 一种基于空间频率插值的星载sar欺骗干扰信号生成方法 |
CN112346022A (zh) * | 2020-11-03 | 2021-02-09 | 中国人民解放军海军航空大学 | 基于二维精简分数阶傅里叶变换的密集假目标干扰抑制方法 |
CN112363136A (zh) * | 2020-10-28 | 2021-02-12 | 南京工业职业技术大学 | 一种基于目标稀疏性和频域去斜的雷达距离超分辨方法 |
CN112363120A (zh) * | 2020-11-03 | 2021-02-12 | 中国人民解放军海军航空大学 | 基于二维分数阶傅里叶变换的移频干扰鉴别方法 |
CN112630744A (zh) * | 2021-01-05 | 2021-04-09 | 成都汇蓉国科微系统技术有限公司 | 一种多相参积累方法融合的海上小目标检测方法及系统 |
CN112684419A (zh) * | 2020-12-25 | 2021-04-20 | 南京理工大学 | 基于双lfm对消的抗间歇采样转发式干扰处理方法及系统 |
CN112816946A (zh) * | 2020-12-31 | 2021-05-18 | 西安电子科技大学 | 基于MPSoC的认知雷达系统及方法 |
CN112881984A (zh) * | 2021-01-14 | 2021-06-01 | 中山大学 | 一种雷达信号抗干扰处理方法、装置及存储介质 |
CN113009430A (zh) * | 2021-03-01 | 2021-06-22 | 西安电子科技大学 | 一种基于噪声卷积的雷达干扰的fpga实现方法及系统 |
CN113064122A (zh) * | 2021-02-25 | 2021-07-02 | 上海卫星工程研究所 | P波段sar干扰抑制算法的性能评价方法、系统及介质 |
CN113176541A (zh) * | 2021-03-24 | 2021-07-27 | 中国人民解放军空军预警学院 | 一种自适应抗频谱弥散干扰方法及系统 |
CN113219416A (zh) * | 2021-04-29 | 2021-08-06 | 中国人民解放军空军工程大学 | 一种基于雷达缺失采样的微动信号分离方法 |
CN113219429A (zh) * | 2021-03-25 | 2021-08-06 | 西安电子科技大学 | 基于多测量压缩感知下的捷变频雷达高速目标重构方法 |
CN113238194A (zh) * | 2021-07-13 | 2021-08-10 | 中国人民解放军火箭军工程大学 | 基于分数域-频域处理的宽带相控阵雷达抗诱骗干扰方法 |
CN113358927A (zh) * | 2021-06-08 | 2021-09-07 | 东南大学 | 一种基于区域核函数的多分量线性调频信号时频分析方法 |
CN113608180A (zh) * | 2021-08-12 | 2021-11-05 | 西安电子科技大学 | 阵元-脉冲编码的mimo雷达主瓣欺骗式干扰抑制方法 |
CN113640754A (zh) * | 2021-08-22 | 2021-11-12 | 西安电子科技大学 | 一种基于低秩稀疏模型的抗主瓣间歇采样转发干扰方法 |
CN113702922A (zh) * | 2021-08-17 | 2021-11-26 | 西安电子科技大学 | 基于多维协同的干扰抑制方法 |
CN113702921A (zh) * | 2021-08-17 | 2021-11-26 | 西安电子科技大学 | 基于时频分析的干扰抑制方法 |
CN114417576A (zh) * | 2021-12-30 | 2022-04-29 | 西安长远电子工程有限责任公司 | 一种电子对抗在线自动裁决方法 |
CN114509731A (zh) * | 2022-01-24 | 2022-05-17 | 电子科技大学 | 一种基于双阶段深度网络的雷达主瓣抗干扰方法 |
CN114660554A (zh) * | 2022-05-25 | 2022-06-24 | 中国人民解放军空军预警学院 | 一种雷达目标和干扰的检测分类方法及系统 |
CN114706047A (zh) * | 2022-04-18 | 2022-07-05 | 北京理工大学 | 一种基于经验小波变换的调频引信信号处理方法 |
CN115184878A (zh) * | 2022-07-11 | 2022-10-14 | 中国人民解放军国防科技大学 | 一种调频斜率捷变lfm雷达的间歇频率自适应调整方法 |
CN115333912A (zh) * | 2022-09-02 | 2022-11-11 | 西安电子科技大学 | 基于参数调制的通信干扰一体化信号设计及处理方法 |
CN115856791A (zh) * | 2023-01-10 | 2023-03-28 | 中国电子科技集团公司第十四研究所 | 一种探测相干干扰一体化信号波形设计与处理方法 |
CN115902873A (zh) * | 2022-12-21 | 2023-04-04 | 扬州宇安电子科技有限公司 | 一种基于物联网的雷达控制预警调节系统及方法 |
CN116148802A (zh) * | 2023-04-24 | 2023-05-23 | 中国科学院空天信息创新研究院 | 一种双基sar相位同步抗干扰方法 |
CN116243315A (zh) * | 2023-04-27 | 2023-06-09 | 中国人民解放军国防科技大学 | 三维摆动目标的sar图像重聚焦方法、装置及设备 |
CN117250587A (zh) * | 2023-11-07 | 2023-12-19 | 烟台初心航空科技有限公司 | 抗干扰iff雷达应答信号产生方法 |
CN117991198A (zh) * | 2024-04-07 | 2024-05-07 | 成都远望科技有限责任公司 | 一种单发双收顶扫云雷达同频干扰识别方法及装置 |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103116155A (zh) * | 2012-09-28 | 2013-05-22 | 北京理工大学 | 一种用于舰艇编队情况下的同型雷达同频干扰抑制方法 |
CN103792518B (zh) * | 2014-01-28 | 2015-11-11 | 北京川速微波科技有限公司 | 一种微波测速雷达环境干扰识别和抑制方法 |
CN105116389A (zh) * | 2015-09-08 | 2015-12-02 | 中船重工鹏力(南京)大气海洋信息系统有限公司 | 一种基于硬限幅脉压的雷达双通道抗同频干扰方法 |
CN106209715B (zh) * | 2016-06-28 | 2019-05-14 | 电子科技大学 | 一种基于时域对消的噪声调幅干扰抑制方法 |
CN106301464B (zh) * | 2016-08-23 | 2018-10-12 | 成都国恒空间技术工程有限公司 | 一种针对chirp信号的信噪比估计方法 |
CN107528664B (zh) * | 2017-08-28 | 2019-06-07 | 电子科技大学 | 一种电磁频谱伞罩干扰机自干扰信号功率控制系统与方法 |
CN109683171A (zh) * | 2017-10-19 | 2019-04-26 | 上海禾赛光电科技有限公司 | 激光雷达及其测距方法 |
CN108663666B (zh) * | 2018-03-27 | 2020-11-10 | 陕西长岭电子科技有限责任公司 | 强杂波海洋环境下的潜用雷达多目标检测方法 |
CN108957419B (zh) * | 2018-05-31 | 2022-08-19 | 西安电子科技大学 | 基于陷波滤波处理的异步干扰抑制方法 |
CN110908393A (zh) * | 2019-10-31 | 2020-03-24 | 中国矿业大学 | 基于探通一体化的水下无人航行器编队协同方法 |
CN111277962B (zh) * | 2020-01-13 | 2024-04-30 | 腾讯科技(深圳)有限公司 | 一种编队方法及相关设备 |
CN112346020B (zh) * | 2020-06-22 | 2022-05-20 | 中国人民解放军海军航空大学青岛校区 | 雷达抗同频干扰方法 |
CN111948621B (zh) * | 2020-07-14 | 2023-06-27 | 浙江大学 | 一种极低信噪比下最佳稀疏域变换的lfm雷达信号处理方法 |
CN113298846B (zh) * | 2020-11-18 | 2024-02-09 | 西北工业大学 | 基于时频语义感知的干扰智能检测方法 |
CN114866165B (zh) * | 2021-06-29 | 2024-04-26 | 哈尔滨工业大学 | 一种多频段室内信号分布场的快速测量获取方法 |
CN115499023B (zh) * | 2022-11-18 | 2023-03-24 | 中国电力科学研究院有限公司 | 一种无线路由器抗放电干扰方法及装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102546499A (zh) * | 2011-12-23 | 2012-07-04 | 北京理工大学 | 一种实线性调频信号的分数阶信道化接收方法 |
CN103116155A (zh) * | 2012-09-28 | 2013-05-22 | 北京理工大学 | 一种用于舰艇编队情况下的同型雷达同频干扰抑制方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4591857A (en) * | 1983-07-11 | 1986-05-27 | The United States Of America As Represented By The Secretary Of The Air Force | Programmable LFM signal processor |
KR100987306B1 (ko) * | 2009-05-11 | 2010-10-12 | 삼성탈레스 주식회사 | 신호 처리 장치 및 그 방법 |
-
2012
- 2012-09-28 CN CN2012103677039A patent/CN103116155A/zh active Pending
-
2013
- 2013-08-23 WO PCT/CN2013/082129 patent/WO2014048193A1/zh active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102546499A (zh) * | 2011-12-23 | 2012-07-04 | 北京理工大学 | 一种实线性调频信号的分数阶信道化接收方法 |
CN103116155A (zh) * | 2012-09-28 | 2013-05-22 | 北京理工大学 | 一种用于舰艇编队情况下的同型雷达同频干扰抑制方法 |
Non-Patent Citations (4)
Title |
---|
HUANG, KEWU ET AL.: "Study on interference suppression based on joint fractional Fourier domain and time domain", SCIENTIA SINICA TECHOLOGICA, vol. 41, no. 10, October 2011 (2011-10-01), pages 1393 - 1404 * |
LIU, DONGLI ET AL.: "Study on Correlation Algorithm During Multi-pulse in Time Domain to Eliminate Radar Identical Frequency Jamming", MODERN RADAR, vol. 31, no. 6, June 2009 (2009-06-01), pages 12 - 14 * |
QI, LIN ET AL.: "Detection and parameter estimation of multicomponent LFM signal based on the fractional Fourier transform", SCIENCE IN CHINA SER, F INFORMATION SCIENCES, vol. 47, no. 2, February 2004 (2004-02-01), pages 184 - 198 * |
XUN, HAO ET AL.: "Co-channel Interference Suppression for Homo-type Radars Based on Joint Transform Domain and Time Domain", JOURNAL OF ELECTRONICS & INFORMATION TECHNOLOGY, vol. 34, no. 12, December 2012 (2012-12-01), pages 2978 - 2984 * |
Cited By (75)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104880695A (zh) * | 2015-06-26 | 2015-09-02 | 中国船舶重工集团公司第七二四研究所 | 雷达窄脉冲剔除带外干扰抑制方法 |
CN106405512A (zh) * | 2016-09-30 | 2017-02-15 | 武汉滨湖电子有限责任公司 | 基于干扰谱和mtd滤波幅相特性的抗同频异步干扰方法 |
CN108872962A (zh) * | 2018-05-10 | 2018-11-23 | 南京航空航天大学 | 基于分数阶傅里叶变换的激光雷达微弱信号提取和分解方法 |
CN108872962B (zh) * | 2018-05-10 | 2022-03-15 | 南京航空航天大学 | 基于分数阶傅里叶变换的激光雷达微弱信号提取和分解方法 |
CN109061626A (zh) * | 2018-07-19 | 2018-12-21 | 武汉滨湖电子有限责任公司 | 一种步进频相参处理检测低信杂比动目标的方法 |
CN109061626B (zh) * | 2018-07-19 | 2022-06-28 | 武汉滨湖电子有限责任公司 | 一种步进频相参处理检测低信杂比动目标的方法 |
CN109188385A (zh) * | 2018-08-31 | 2019-01-11 | 西安电子科技大学 | 杂波背景下的高速微弱目标检测方法 |
CN109188385B (zh) * | 2018-08-31 | 2022-12-06 | 西安电子科技大学 | 杂波背景下的高速微弱目标检测方法 |
CN109283507A (zh) * | 2018-12-03 | 2019-01-29 | 北京遥感设备研究所 | 一种基于时频域特征的雷达目标识别方法及系统 |
CN109521411A (zh) * | 2018-12-19 | 2019-03-26 | 西安电子科技大学 | 一种距离扩展目标的检测方法 |
CN110146851B (zh) * | 2019-05-17 | 2022-12-23 | 西安电子科技大学 | 一种基于数字统计特性分析改善雷达回波信噪比的方法 |
CN110146851A (zh) * | 2019-05-17 | 2019-08-20 | 西安电子科技大学 | 一种基于数字统计特性分析改善雷达回波信噪比的方法 |
CN110412572A (zh) * | 2019-07-23 | 2019-11-05 | 中国科学院电子学研究所 | P波段合成孔径雷达成像干扰抑制方法 |
CN110412572B (zh) * | 2019-07-23 | 2023-03-24 | 中国科学院电子学研究所 | P波段合成孔径雷达成像干扰抑制方法 |
CN111551909B (zh) * | 2020-05-08 | 2022-05-13 | 南京国睿防务系统有限公司 | 一种脉间捷变频lfm回波信号跨距离门走动的校正方法 |
CN111551909A (zh) * | 2020-05-08 | 2020-08-18 | 中国电子科技集团公司第十四研究所 | 一种脉间捷变频lfm回波信号跨距离门走动的校正方法 |
CN111935038A (zh) * | 2020-08-03 | 2020-11-13 | 中国人民解放军国防科技大学 | 基于分数阶傅里叶变换的线性调频干扰消除方法 |
CN111935038B (zh) * | 2020-08-03 | 2022-08-19 | 中国人民解放军国防科技大学 | 基于分数阶傅里叶变换的线性调频干扰消除方法 |
CN112014806A (zh) * | 2020-08-14 | 2020-12-01 | 西安电子科技大学 | 一种复杂干扰场景下的机载雷达无意干扰抑制方法 |
CN112014806B (zh) * | 2020-08-14 | 2024-04-23 | 西安电子科技大学 | 一种复杂干扰场景下的机载雷达无意干扰抑制方法 |
CN112083393B (zh) * | 2020-10-27 | 2023-06-30 | 西安电子科技大学 | 基于谱图平均时间特征的间歇采样转发干扰识别方法 |
CN112083393A (zh) * | 2020-10-27 | 2020-12-15 | 西安电子科技大学 | 基于谱图平均时间特征的间歇采样转发干扰识别方法 |
CN112363136A (zh) * | 2020-10-28 | 2021-02-12 | 南京工业职业技术大学 | 一种基于目标稀疏性和频域去斜的雷达距离超分辨方法 |
CN112363136B (zh) * | 2020-10-28 | 2023-09-22 | 南京工业职业技术大学 | 一种基于目标稀疏性和频域去斜的雷达距离超分辨方法 |
CN112363120A (zh) * | 2020-11-03 | 2021-02-12 | 中国人民解放军海军航空大学 | 基于二维分数阶傅里叶变换的移频干扰鉴别方法 |
CN112346022A (zh) * | 2020-11-03 | 2021-02-09 | 中国人民解放军海军航空大学 | 基于二维精简分数阶傅里叶变换的密集假目标干扰抑制方法 |
CN112255596B (zh) * | 2020-11-09 | 2023-09-15 | 中国人民解放军战略支援部队航天工程大学 | 一种基于空间频率插值的星载sar欺骗干扰信号生成方法 |
CN112255596A (zh) * | 2020-11-09 | 2021-01-22 | 中国人民解放军战略支援部队航天工程大学 | 一种基于空间频率插值的星载sar欺骗干扰信号生成方法 |
CN112684419A (zh) * | 2020-12-25 | 2021-04-20 | 南京理工大学 | 基于双lfm对消的抗间歇采样转发式干扰处理方法及系统 |
CN112684419B (zh) * | 2020-12-25 | 2024-01-05 | 南京理工大学 | 基于双lfm对消的抗间歇采样转发式干扰处理方法及系统 |
CN112816946B (zh) * | 2020-12-31 | 2023-08-18 | 西安电子科技大学 | 基于MPSoC的认知雷达系统及方法 |
CN112816946A (zh) * | 2020-12-31 | 2021-05-18 | 西安电子科技大学 | 基于MPSoC的认知雷达系统及方法 |
CN112630744A (zh) * | 2021-01-05 | 2021-04-09 | 成都汇蓉国科微系统技术有限公司 | 一种多相参积累方法融合的海上小目标检测方法及系统 |
CN112630744B (zh) * | 2021-01-05 | 2023-07-04 | 成都汇蓉国科微系统技术有限公司 | 一种多相参积累方法融合的海上小目标检测方法及系统 |
CN112881984B (zh) * | 2021-01-14 | 2023-09-12 | 中山大学 | 一种雷达信号抗干扰处理方法、装置及存储介质 |
CN112881984A (zh) * | 2021-01-14 | 2021-06-01 | 中山大学 | 一种雷达信号抗干扰处理方法、装置及存储介质 |
CN113064122B (zh) * | 2021-02-25 | 2023-02-17 | 上海卫星工程研究所 | P波段sar干扰抑制算法的性能评价方法、系统及介质 |
CN113064122A (zh) * | 2021-02-25 | 2021-07-02 | 上海卫星工程研究所 | P波段sar干扰抑制算法的性能评价方法、系统及介质 |
CN113009430B (zh) * | 2021-03-01 | 2023-06-30 | 西安电子科技大学 | 一种基于噪声卷积的雷达干扰的fpga实现方法及系统 |
CN113009430A (zh) * | 2021-03-01 | 2021-06-22 | 西安电子科技大学 | 一种基于噪声卷积的雷达干扰的fpga实现方法及系统 |
CN113176541A (zh) * | 2021-03-24 | 2021-07-27 | 中国人民解放军空军预警学院 | 一种自适应抗频谱弥散干扰方法及系统 |
CN113219429A (zh) * | 2021-03-25 | 2021-08-06 | 西安电子科技大学 | 基于多测量压缩感知下的捷变频雷达高速目标重构方法 |
CN113219429B (zh) * | 2021-03-25 | 2024-01-30 | 西安电子科技大学 | 基于多测量压缩感知下的捷变频雷达高速目标重构方法 |
CN113219416A (zh) * | 2021-04-29 | 2021-08-06 | 中国人民解放军空军工程大学 | 一种基于雷达缺失采样的微动信号分离方法 |
CN113219416B (zh) * | 2021-04-29 | 2023-04-25 | 中国人民解放军空军工程大学 | 一种基于雷达缺失采样的微动信号分离方法 |
CN113358927A (zh) * | 2021-06-08 | 2021-09-07 | 东南大学 | 一种基于区域核函数的多分量线性调频信号时频分析方法 |
CN113238194A (zh) * | 2021-07-13 | 2021-08-10 | 中国人民解放军火箭军工程大学 | 基于分数域-频域处理的宽带相控阵雷达抗诱骗干扰方法 |
CN113238194B (zh) * | 2021-07-13 | 2021-10-08 | 中国人民解放军火箭军工程大学 | 基于分数域-频域处理的宽带相控阵雷达抗诱骗干扰方法 |
CN113608180B (zh) * | 2021-08-12 | 2023-06-30 | 西安电子科技大学 | 阵元-脉冲编码的mimo雷达主瓣欺骗式干扰抑制方法 |
CN113608180A (zh) * | 2021-08-12 | 2021-11-05 | 西安电子科技大学 | 阵元-脉冲编码的mimo雷达主瓣欺骗式干扰抑制方法 |
CN113702921B (zh) * | 2021-08-17 | 2023-06-30 | 西安电子科技大学 | 基于时频分析的干扰抑制方法 |
CN113702922B (zh) * | 2021-08-17 | 2023-06-30 | 西安电子科技大学 | 基于多维协同的干扰抑制方法 |
CN113702922A (zh) * | 2021-08-17 | 2021-11-26 | 西安电子科技大学 | 基于多维协同的干扰抑制方法 |
CN113702921A (zh) * | 2021-08-17 | 2021-11-26 | 西安电子科技大学 | 基于时频分析的干扰抑制方法 |
CN113640754B (zh) * | 2021-08-22 | 2023-12-22 | 西安电子科技大学 | 一种基于低秩稀疏模型的抗主瓣间歇采样转发干扰方法 |
CN113640754A (zh) * | 2021-08-22 | 2021-11-12 | 西安电子科技大学 | 一种基于低秩稀疏模型的抗主瓣间歇采样转发干扰方法 |
CN114417576A (zh) * | 2021-12-30 | 2022-04-29 | 西安长远电子工程有限责任公司 | 一种电子对抗在线自动裁决方法 |
CN114509731A (zh) * | 2022-01-24 | 2022-05-17 | 电子科技大学 | 一种基于双阶段深度网络的雷达主瓣抗干扰方法 |
CN114509731B (zh) * | 2022-01-24 | 2023-09-05 | 电子科技大学 | 一种基于双阶段深度网络的雷达主瓣抗干扰方法 |
CN114706047A (zh) * | 2022-04-18 | 2022-07-05 | 北京理工大学 | 一种基于经验小波变换的调频引信信号处理方法 |
CN114660554A (zh) * | 2022-05-25 | 2022-06-24 | 中国人民解放军空军预警学院 | 一种雷达目标和干扰的检测分类方法及系统 |
CN114660554B (zh) * | 2022-05-25 | 2022-09-23 | 中国人民解放军空军预警学院 | 一种雷达目标和干扰的检测分类方法及系统 |
CN115184878A (zh) * | 2022-07-11 | 2022-10-14 | 中国人民解放军国防科技大学 | 一种调频斜率捷变lfm雷达的间歇频率自适应调整方法 |
CN115333912A (zh) * | 2022-09-02 | 2022-11-11 | 西安电子科技大学 | 基于参数调制的通信干扰一体化信号设计及处理方法 |
CN115333912B (zh) * | 2022-09-02 | 2023-09-08 | 西安电子科技大学 | 基于参数调制的通信干扰一体化信号设计及处理方法 |
CN115902873A (zh) * | 2022-12-21 | 2023-04-04 | 扬州宇安电子科技有限公司 | 一种基于物联网的雷达控制预警调节系统及方法 |
CN115902873B (zh) * | 2022-12-21 | 2023-09-12 | 扬州宇安电子科技有限公司 | 一种基于物联网的雷达控制预警调节系统及方法 |
CN115856791A (zh) * | 2023-01-10 | 2023-03-28 | 中国电子科技集团公司第十四研究所 | 一种探测相干干扰一体化信号波形设计与处理方法 |
CN115856791B (zh) * | 2023-01-10 | 2023-05-02 | 中国电子科技集团公司第十四研究所 | 一种探测相干干扰一体化信号波形设计与处理方法 |
CN116148802A (zh) * | 2023-04-24 | 2023-05-23 | 中国科学院空天信息创新研究院 | 一种双基sar相位同步抗干扰方法 |
CN116148802B (zh) * | 2023-04-24 | 2023-06-30 | 中国科学院空天信息创新研究院 | 一种双基sar相位同步抗干扰方法 |
CN116243315A (zh) * | 2023-04-27 | 2023-06-09 | 中国人民解放军国防科技大学 | 三维摆动目标的sar图像重聚焦方法、装置及设备 |
CN117250587A (zh) * | 2023-11-07 | 2023-12-19 | 烟台初心航空科技有限公司 | 抗干扰iff雷达应答信号产生方法 |
CN117250587B (zh) * | 2023-11-07 | 2024-02-02 | 烟台初心航空科技有限公司 | 抗干扰iff雷达应答信号产生方法 |
CN117991198A (zh) * | 2024-04-07 | 2024-05-07 | 成都远望科技有限责任公司 | 一种单发双收顶扫云雷达同频干扰识别方法及装置 |
Also Published As
Publication number | Publication date |
---|---|
CN103116155A (zh) | 2013-05-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014048193A1 (zh) | 一种用于舰艇编队情况下同型雷达同频干扰抑制方法 | |
Sen et al. | Adaptive design of OFDM radar signal with improved wideband ambiguity function | |
EP2771710B1 (en) | Wideband sonar receiver and sonar signal processing algorithms | |
CN107607937B (zh) | 基于时间反演的雷达目标测距方法 | |
CN106597443B (zh) | 低频合成孔径雷达图像对比相消射频干扰抑制方法 | |
WO2017147255A1 (en) | Estimation and mitigation of swept-tone interferers in frequency-hopped systems | |
Meller et al. | Processing of noise radar waveforms using block least mean squares algorithm | |
KR20170029899A (ko) | 능동 소나 시스템의 lfm신호 파라미터 추정 장치 및 방법 | |
CN109061626B (zh) | 一种步进频相参处理检测低信杂比动目标的方法 | |
CN116068502B (zh) | 一种多域联合抗复合干扰方法、装置和系统 | |
CN112881982B (zh) | 一种捷变频雷达抑制密集转发干扰方法 | |
JP5249115B2 (ja) | パルス圧縮装置および物標探知装置 | |
CN109541556B (zh) | 一种对线性调频信号移频干扰的识别方法 | |
CN104101868A (zh) | 基于干扰子空间重构的雷达多假目标干扰抑制方法 | |
CN116953683A (zh) | 基于脉内波形认知优化设计的间歇采样转发干扰抑制方法 | |
US10809292B2 (en) | Methods and circuit arrangements for localizing a fault location on an electric line based on time domain reflectometry | |
CN113640754B (zh) | 一种基于低秩稀疏模型的抗主瓣间歇采样转发干扰方法 | |
Chen et al. | Chirp-like jamming mitigation for GPS receivers using wavelet-packet-transform-assisted adaptive filters | |
CN113009464B (zh) | 基于线性约束最小方差准则的稳健自适应脉冲压缩方法 | |
CN113238194B (zh) | 基于分数域-频域处理的宽带相控阵雷达抗诱骗干扰方法 | |
CN116243251A (zh) | 一种基于波形分集与子空间投影的主瓣欺骗干扰抑制方法 | |
Xi-Hai et al. | Research on frequency-domain adaptive line enhancement based on pre-whitening matched filter | |
Thakur et al. | Signal generation employing Chebyshev polynomial for pulse compression with small relative side-lobe level | |
CN110703222B (zh) | 一种提高格雷互补波形多目标识别性能的方法及装置 | |
Ślesicka et al. | The performance of a linear STAP processor for radar signal processing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13842968 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13842968 Country of ref document: EP Kind code of ref document: A1 |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC , EPO FORM 1205A DATED 23.09.15 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13842968 Country of ref document: EP Kind code of ref document: A1 |