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1. 发明授权

US08416123B1 Radar system for continuous tracking of multiple objects 有权
标题翻译：雷达系统可连续跟踪多个物体
公开(公告)号：US08416123B1
公开(公告)日：2013-04-09
申请号：US12984175
申请日：2011-01-04
申请人： Richard L. Mitchell , August W. Rihaczek
发明人： Richard L. Mitchell , August W. Rihaczek
IPC分类号： G01S13/58
CPC分类号： G01S13/42 , G01S13/582 , G01S13/726 , G01S2013/0263
摘要： A non-scanning radar for detecting and tracking multiple moving objects. The transmit antenna continuously illuminates the entire surveillance volume, which can even be omni-directional (hemispherical). Multiple receive antennas are employed, each covering part of the surveillance volume. Receivers are used in combination to measure angles of incidence via interferometry on objects that are resolved in range and Doppler. Very long processing times are used to compensate for the reduced antenna gain compared to any radar that scans. By continuously illuminating the surveillance volume, there is no hard limit to the number of objects that can be simultaneously tracked. The primary application for this technology is detection and tracking of such objects as bullets, artillery projectiles, mortar shells, and rockets, and determining the location of the weapon that fired them. Numerous other applications are also described.
摘要翻译：用于检测和跟踪多个运动物体的非扫描雷达。发射天线连续照亮整个监视音量，甚至可以是全方位的（半球形）。采用多个接收天线，每个天线覆盖监视音量的一部分。接收器组合使用，通过干涉测量在范围和多普勒中解析的物体上测量入射角。与扫描的任何雷达相比，使用非常长的处理时间来补偿降低的天线增益。通过不断地照亮监视量，可以同时跟踪的物体数量不受限制。该技术的主要应用是检测和跟踪诸如子弹，炮弹，迫击炮弹和火箭等物体，并确定射击武器的位置。还描述了许多其它应用。

2. 发明授权

US07626536B1 Non-scanning radar for detecting and tracking targets 失效
标题翻译：用于检测和跟踪目标的非扫描雷达
公开(公告)号：US07626536B1
公开(公告)日：2009-12-01
申请号：US11115487
申请日：2005-04-26
申请人： August W. Rihaczek , Richard L. Mitchell
发明人： August W. Rihaczek , Richard L. Mitchell
IPC分类号： G01S13/48
CPC分类号： G01S13/343 , G01S3/46 , G01S7/35 , G01S13/46
摘要： Radar for detecting and tracking short range airborne targets using a non-scanning beam to illuminate the entire search space, and processing the return signals from a plurality of spaced apart receive antennas. Target angle in one plane may be determined by coherent processing of the returns from the plurality of receive antennas. Spacing the receive antennas apart in three dimensions allows determining of two angles, such as azimuth and elevation. Processing of the returns may be coherent or noncoherent, or returns may be processed both coherently and noncoherently. Programmability of the processing algorithms and parameters provide flexibility in applications, as well as flexibility based on such things as the target type and its range. Exemplary applications are disclosed.
摘要翻译：雷达，用于使用非扫描光束来检测和跟踪短距离空中目标以照亮整个搜索空间，以及处理来自多个间隔开的接收天线的返回信号。可以通过对来自多个接收天线的返回的相干处理来确定一个平面中的目标角度。将接收天线分成三维可以确定两个角度，例如方位角和高度。返回的处理可以是相干的或不相干的，或者返回可以相干地和非相干地进行处理。处理算法和参数的可编程性提供了应用程序的灵活性，以及基于目标类型及其范围等方面的灵活性。公开了示例性应用。

3. 发明授权

US07315276B1 Beam compression radar 失效
标题翻译：光束压缩雷达
公开(公告)号：US07315276B1
公开(公告)日：2008-01-01
申请号：US11176549
申请日：2005-07-07
申请人： August W. Rihaczek , Richard L. Mitchell
发明人： August W. Rihaczek , Richard L. Mitchell
IPC分类号： G01S13/42 , H01Q3/30
CPC分类号： H01Q21/061 , G01S13/426 , G01S2013/0245 , H01Q3/30 , H01Q21/20
摘要： A concept is described for broadening the beam of a phased array radar antenna to provide continuous illumination of all radar targets within the search space, and this beam is compressed upon reception to realize the angular resolution that is possible with the antenna. The process is analogous to pulse compression. The advantages of the long dwell times provided by this concept include superior clutter suppression performance, more accurate tracking of targets, and the ability to analyze the target returns for reliable discrimination, classification and identification. The broad beam also reduces the power seen by an intercept receiver, for increased covert operation. This is all accomplished without any sacrifice in power. Various embodiments are disclosed.
摘要翻译：描述了用于拓宽相控阵雷达天线的波束以提供搜索空间内所有雷达目标的连续照明的概念，并且该波束在接收时被压缩以实现天线可能的角度分辨率。该过程类似于脉冲压缩。该概念提供的长停留时间的优点包括优异的杂波抑制性能，更精确的目标跟踪，以及分析目标回报的可靠辨别，分类和识别能力。宽波束还降低了拦截接收机所看到的功率，以增加隐蔽操作。这一切都是在没有任何牺牲力的情况下完成的。公开了各种实施例。

4. 依法登记的发明

USH1181H Method for high resolution radar imagery and accurate dimensional measurements 失效
公开(公告)号：USH1181H
公开(公告)日：1993-05-04
申请号：US120216
申请日：1987-11-06
申请人： August W. Rihaczek
发明人： August W. Rihaczek
IPC分类号： G01S7/41 , G01S13/90
CPC分类号： G01S7/411 , G01S13/9035
摘要： This invention involves a method of processing radar returns to form two-dimensional images of targets such as ground vehicles, aircraft, ships, and so forth. Resolution in one dimension is provided by range resolution, and resolution in the other dimension is provided by Doppler resolution. Man-made targets such as ground vehicles or ships consist of scattering centers which are extended smooth plates, long edges, rods and the like. These scattering units typically are so large compared with the radar wavelength that they have a highly lobed backscattering pattern. When the processing time is increased in order to achieve higher Doppler resolution, it is possible to observe over the processing time a full or even more than one sidelobe of the backscattering pattern. Doppler resolution theory shows that under these circumstances the responses of scatterers are smeared out into meaningless background interference, so that image detail is lost. The present invention avoids this problem by analyzing the signal in segments much shorter than used with conventional processing. This is done despite the fact that the required image detail appears to demand long processing times. Processing a scatterer only over the time interval in which it is dominant (it governs the behavior of the phase then) prevents the smearing of scatterers and there is no need to resolve one from another. The result is an improved radar image of actual targets.

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