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1. 发明授权

US06765525B2 Method for reducing false alarm rate in radar images 有权
标题翻译：减少雷达图像误报率的方法
公开(公告)号：US06765525B2
公开(公告)日：2004-07-20
申请号：US10370111
申请日：2003-02-21
申请人： Bernhard Bickert , Jochen Meyer-Hilberg
发明人： Bernhard Bickert , Jochen Meyer-Hilberg
IPC分类号： G01S1352
CPC分类号： G01S13/5244 , G01S7/2927 , G01S13/5242
摘要： A method for reducing the false alarm rate, i.e. the number of alarms of fixed targets erroneously declared as moving targets in the radar images of two- or multi-channel MTI radar devices, wherein the suppression of fixed target echoes over the moving target echoes within the main antenna lobe occurs through a space time adaptive processing—STAP—filter. The method uses a comparison of the amplitude amounts or power values of the range Doppler frequency cells with a threshold that can be specified in constant terms and summary of the resulting alarms. A target function is compared with defined test functions and selection criteria are determined from suitable combined calculation methods that are applied to the test and target functions for the purpose of classifying a respective target alarm as a moving or fixed target alarm.
摘要翻译：一种用于减少误报率的方法，即在两通道或多通道MTI雷达装置的雷达图像中被错误地声明为移动目标的固定目标的报警数量，其中对目标移动目标回波的抑制超过移动目标回波通过空时自适应处理STAP滤波器发生主天线波瓣。该方法使用范围多普勒频率单元的幅度量或功率值与可以以常数指定的阈值和所得到的报警的总结进行比较。将目标功能与定义的测试功能进行比较，并且从适用于测试和目标功能的合适的组合计算方法确定选择标准，以将相应的目标报警分类为移动或固定目标报警。

2. 发明授权

US06563455B2 Universal two-channel STAP filter 失效
标题翻译：通用双通道STAP滤波器
公开(公告)号：US06563455B2
公开(公告)日：2003-05-13
申请号：US09910002
申请日：2001-07-23
申请人： Jochen Meyer-Hilberg , Bernhard Bickert
发明人： Jochen Meyer-Hilberg , Bernhard Bickert
IPC分类号： G01S7288
CPC分类号： G01S13/5244 , G01S7/295
摘要： To suppress interfering stationary targets in radar source data, a STAP filtering method is used. Filtering coefficients are determined, and filtering of the data takes place, in the frequency domain; the process is therefore limited to a few computing operations per matrix element of the range/Doppler matrix. Since, by means of the STAP filter according to the invention, the optimal filtering characteristics can be implemented, the stationary target suppression also functions in the range of the minor lobes of the antenna. Therefore, data of individual adjacent channels (L/R, left/right) can be processed as well as summation and difference signals (&Sgr;/&Dgr;).
摘要翻译：为了抑制雷达源数据中的干扰固定目标，采用STAP滤波方法。确定滤波系数，并且在频域中进行数据的滤波; 因此，该过程被限制在范围/多普勒矩阵的每个矩阵元素的几个计算操作。由于通过根据本发明的STAP滤波器可以实现最佳滤波特性，所以静态目标抑制也在天线的小波瓣的范围内起作用。因此，可以对各个相邻信道（L / R，左/右）的数据以及加和和差信号（SIGMA / DELTA）进行处理。

3. 发明授权

US06686874B2 Process for calibrating radar signals at subapertures of an antenna of two-channel SAR/MTI radar system 失效
标题翻译：用于校准双通道SAR / MTI雷达系统天线子孔径雷达信号的过程
公开(公告)号：US06686874B2
公开(公告)日：2004-02-03
申请号：US10252005
申请日：2002-09-23
申请人： Bernhard Bickert , Jochen Meyer-Hilberg
发明人： Bernhard Bickert , Jochen Meyer-Hilberg
IPC分类号： G01S740
CPC分类号： G01S13/9029 , G01S7/4021 , G01S13/524 , G01S13/9023
摘要： In a process for computing the radar signals present at the output of two subapertures of an antenna of a two-channel radar system, the two subaperture channels are combined by means of a wave guide part to a sum and difference channel, and the signals of the sum and difference channel are used to compute the radar signals at the subaperture channels. The signals of the two subaperture channels are computed from the amplitude- and phase-shifted sum and difference channel signal by being placed in the following equations: X 1 ⁡ ( r , f ) = X S ⁡ ( r , f ) - X D ⁡ ( r , f ) · exp ⁢ ⁢ ( - j ⁢ ⁢ Φ 0 ) 2 ( 1 ) X 2 ⁡ ( r , f ) = a 0 · ( X S ⁡ ( r , f ) + x D ⁡ ( r , f ) · exp ( - j ⁢ ⁢ Φ 0 2 ) ( 2 ) wherein X1(r,f), X2(r,f): Frequency spectrum of the two subaperture channels; XS(r,f),XD(r,f): Frequency spectrum of the sum and difference channel, r: distance cell, f: Doppler frequency, &PHgr;0: phase correction factor, and a0: amplitude correction factor.
摘要翻译：在用于计算存在于双通道雷达系统的天线的两个子孔径的输出端的雷达信号的过程中，两个子孔径通道通过波导部分组合到和差和差分信道，并且信号总和差信道用于计算子孔径信道的雷达信号。通过放置在以下等式中，从振幅和相移的和和通道信号计算两个子孔径通道的信号：其中X1（r，f），X2（r，f）：两个子通道信号的频谱子通道; XS（r，f），XD（r，f）：和差和通道的频谱，r：距离单元，f：多普勒频率，Phi0：相位校正因子和a0：幅度校正因子。

4. 发明授权

US06489918B2 Real-time (STAP) filter for a fixed-target suppression 有权
标题翻译：用于固定目标抑制的实时（STAP）滤波器
公开(公告)号：US06489918B2
公开(公告)日：2002-12-03
申请号：US09804053
申请日：2001-03-13
申请人： Bernhard Bickert , Jochen Meyer-Hilberg
发明人： Bernhard Bickert , Jochen Meyer-Hilberg
IPC分类号： G01S13524
CPC分类号： G01S13/5244 , G01S13/4454 , G01S13/449 , G01S13/5242
摘要： For optimizing the computing expenditures when using STAP filters in real-time systems, the determination of the filter coefficients and the filtering of radar source data of the distance Doppler matrices {right arrow over (X)}left and {right arrow over (X)}right of two adjacent reception channels are carried out in the frequency domain. On the basis of {right arrow over (X)}left and {right arrow over (X)}right, a distance Doppler matrix {right arrow over (Y)}clutterfree is created, at which the echoes of fixed targets are suppressed and the echoes of moving targets a coherently intensified.
摘要翻译：为了优化在实时系统中使用STAP滤波器时的计算支出，确定距离多普勒矩阵的滤波器系数和雷达源数据的滤波（右边箭头（Xleft和{右箭头）（两个相邻接收器的Xright 在右边的（Xleft）和（向右箭头）（Xright）的基础上，创建一个距离多普勒矩阵{右箭头（Yclutterfree），固定目标的回波被抑制，移动目标的回声相干加强。

5. 发明授权

US06549160B2 Method of correcting azimuthal position of moving targets in SAR-images 失效
公开(公告)号：US06549160B2
公开(公告)日：2003-04-15
申请号：US09922912
申请日：2001-08-07
申请人： Jochen Meyer-Hilberg
发明人： Jochen Meyer-Hilberg
IPC分类号： G01S1300
CPC分类号： G01S13/9029
摘要： The positions of moving targets in the azimuthal direction which result from the SAR processing are falsified by components of the vehicle movement in the Doppler spectrum of the received signal, so that without the implementation of additional signal processing, moving targets are imaged in the SAR image at a false azimuth position. A method of repositioning moving targets in SAR images which consist of multi-channel range/Doppler measurement data X with NND Doppler resolution cells, defines on the basis of the filtering coefficients of the STAP transformed into the frequency domain, a family of NDZ pattern functions M, and determines testing functions T assigned to the measurement data. The true azimuth position of a moving target is then computed on the basis of the position of the maximum of the correlation between the testing functions and the pattern functions.

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