公开(公告)号：EP1397698A4

公开(公告)日：2005-09-21

申请号：EP02746384

申请日：2002-05-14

Applicant: LOCKHEED CORP

Inventor： MATTOX BARRY G

IPC: G01S7/288 ,  G01S7/35 ,  G01S7/40 ,  G01S7/487 ,  G01S13/28 ,  G01S13/34 ,  G01S17/32 ,  G01S13/58 ,  G01S13/00 ,  G01S13/08

CPC classification number: G01S7/487 ,  G01S7/352 ,  G01S7/4021 ,  G01S13/28 ,  G01S13/34 ,  G01S17/325 ,  G01S2007/2883 ,  G01S2007/2886 ,  G01S2007/356 ,  G01S2007/358

Abstract: In a homodyne-receiver radar system used for ranging and/or target detection, the frequency-modulated (FM) transmit phase are removed from the received signal. Removal of the known FM transmit phase from the received signal reduces the bandwidth of the received signal to half that of a system that does not remove the transmit phase. This allows the sampling rate, and thus the processor throughput, to be cut in half. With the FM transmit phase removed, the phase sequence of the processed signal is akin to a delayed version of the transmit signal phase history. This allows the range processing to use segments of a single phase sequence for processing all range gates, resulting in a large reduction in the amount of coefficient storage used for the matched-phase sequences required to process the set of range gates.

公开(公告)号：EP1287377A4

公开(公告)日：2003-07-02

申请号：EP01932607

申请日：2001-04-24

Applicant: LOCKHEED CORP

Inventor： MATTOX BARRY G

IPC: G01S7/292 ,  G01S13/58

CPC classification number: G01S7/292

Abstract: Dual path detection processing in which a low SNR signal processor (520) detects signals over a limited range of low acceleration values and a high SNR signal processor (540) detects signals over a wider range of acceleration values. The low SNR signal processor (520) uses acceleration bins formed from a noncoherent FFT array to detect low SNR signals of far away objects which tend to have lower angular acceleration. Because close proximity target objects tend to have higher SNR return signals, it is not necessary to rely on acceleration bins formed from an FFT array for signal detection. Close proximity targets with high SNR can often be detected in individual coherently integrated FFT templates, despite the likelihood of large acceleration uncertainty from higher angular acceleration rates. Since signal detection of higher SNR signals is much less computationally burdensome than signal detection using a noncoherent FFT array, the present invention is able to realize computational efficiencies by using dual path detection processing.

Abstract translation: 其中低SNR信号处理器（520）在低加速度值的有限范围内检测信号并且高SNR信号处理器（540）在更宽范围的加速度值上检测信号的双路径检测处理。 低SNR信号处理器（520）使用由非相干FFT阵列形成的加速度二进制来检测倾向于具有较低角加速度的远距离物体的低SNR信号。 由于近距离目标物体倾向于具有较高的SNR返回信号，因此不需要依靠由FFT阵列形成的加速箱来进行信号检测。 尽管从较高的角加速度可能出现较大的加速度不确定性，但通常可以在单个相干集成的FFT模板中检测到具有高SNR的近距离目标。 由于较高SNR信号的信号检测比使用非相干FFT阵列的信号检测在计算上负担小得多，所以本发明能够通过使用双路径检测处理来实现计算效率。

公开(公告)号：EP2102788A4

公开(公告)日：2013-11-27

申请号：EP08713671

申请日：2008-01-09

Applicant: LOCKHEED CORP

Inventor： MATTOX BARRY G ,  TENER GENE D

IPC: G06K9/00 ,  G01J4/04

CPC classification number: G01J4/04

公开(公告)号：EP1287378A4

公开(公告)日：2004-11-24

申请号：EP01931152

申请日：2001-04-23

Applicant: LOCKHEED CORP

Inventor： MATTOX BARRY G

IPC: G01S7/288 ,  G01S13/58 ,  G01S7/292

CPC classification number: G01S13/58 ,  G01S2007/2883

Abstract: Signals are transmitted from the transmitter (410) using the antenna (420) that is shared with the receiver (430). Return reflected signals are passed from the receiver (430) to a low pass filter (440) and an analogue to digital converter (450). The digital output of the analogue to digital converter (450) is transformed into the frequency domain by the coherent integrator (460) to form FFT templates of the return signals. Signal manipulation and computation signals can be stored in and retrieved from the memory (470). The signal processor (500) discards signal phase, performs presums, forms an FFT matrix of the FFT templates, and analyzes acceleration bins to detect a target object.