专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US08334803B1 Method for simulating noisy radar target echoes 有权
标题翻译：用于模拟噪声雷达目标回波的方法
公开(公告)号：US08334803B1
公开(公告)日：2012-12-18
申请号：US12627338
申请日：2009-11-30
申请人： Harry Urkowitz
发明人： Harry Urkowitz
IPC分类号： G01S7/40
CPC分类号： G01S7/4052 , G01S2007/406
摘要： A method for determining target echo detection efficacy of a signal processing algorithm of a radar system involves generating a simulated noise complex envelope sequence, generating a simulated radar target echo signal complex envelope pulse sequence and adding the simulated noise complex envelope sequence to the simulated radar target echo signal complex envelope pulse sequence, thereby producing simulated noisy radar target echo signal complex envelope sequence. The simulated noisy radar target echo signal complex envelope sequence is inputted into the signal processing algorithm and the output of the signal processing algorithm is analyzed to determine target echo detection efficacy of the signal processing algorithm.
摘要翻译：一种用于确定雷达系统的信号处理算法的目标回波检测效能的方法包括产生模拟噪声复包络序列，产生模拟雷达目标回波信号复包络脉冲序列，并将模拟噪声复包络序列添加到模拟雷达目标回波信号复包络脉冲序列，从而产生模拟噪声雷达目标回波信号复包络序列。将模拟噪声雷达目标回波信号复包络序列输入到信号处理算法中，分析信号处理算法的输出，确定信号处理算法的目标回波检测效果。

12. 发明授权

US08269665B1 Monopulse angle determination 有权
标题翻译：单脉冲角度测定
公开(公告)号：US08269665B1
公开(公告)日：2012-09-18
申请号：US12696248
申请日：2010-01-29
申请人： Harry Urkowitz , Robert A. Postell , Robert E. Lefferts
发明人： Harry Urkowitz , Robert A. Postell , Robert E. Lefferts
IPC分类号： G01S13/08 , G01S13/00
CPC分类号： G01S13/284 , G01S13/4418
摘要： Modern tactical radars frequently use phase shifters to electronically specify or steer the spatial position of the antenna beam without requiring mechanical motion of the antenna. These phase shifters can only be set correctly for a specific frequency. If a waveform is transmitted through the antenna which consists of multiple segments which differ in frequency or modulation from that frequency used to steer the position of the beam, errors are introduced into the monopulse measurement. These monopulse errors are reduced or eliminated by correction factors. The monopulse errors are corrected by pre-computed factors or terms which result from the differences in frequency and modulation used in the waveform from the frequency used to steer or position the beam. Correction is also provided for radar altitude. These correction factors are easily pre-computed and applied only when needed to minimize the computational requirements.
摘要翻译：现代战术雷达经常使用移相器电子地指定或引导天线波束的空间位置，而不需要天线的机械运动。这些移相器只能在特定频率下正确设置。如果通过天线传输波形，该天线由频率不同或调制频率不同的多个分段组成，用于引导波束位置，则误差将被引入单脉冲测量。这些单脉冲误差通过校正因子减少或消除。单脉冲误差通过预先计算的因子或术语来校正，这些因子或术语是由用于引导或定位光束的频率在波形中使用的频率和调制差引起的。还提供了雷达高度校正。这些校正因子很容易被预先计算，并且仅在需要时才应用以最小化计算要求。

13. 发明授权

US08044846B1 Method for deblurring radar range-doppler images 有权
标题翻译：雷达范围 - 多普勒图像去模糊的方法
公开(公告)号：US08044846B1
公开(公告)日：2011-10-25
申请号：US11946943
申请日：2007-11-29
申请人： Harry Urkowitz , Jeff D. Cammerata
发明人： Harry Urkowitz , Jeff D. Cammerata
IPC分类号： G01S13/89 , G01S13/00 , G01S13/90
CPC分类号： G01S13/582 , G01S7/2923
摘要： A method for displaying information relating to the range and Doppler of a remote target includes transmitting electromagnetic energy toward the target, and receiving reflected signals defining a two-dimensional (range-Doppler) radar image. The reflected signals are matched-filtered, which tends to blur the image. The image is deblurred while the features of thermal noise enhancement and irregularity of the deconvolved output are constrained to produce a single point deblurring output.
摘要翻译：用于显示与远程目标的范围和多普勒相关的信息的方法包括向目标发送电磁能量，以及接收限定二维（范围 - 多普勒）雷达图像的反射信号。反射信号被匹配滤波，这往往会使图像模糊。图像被去模糊，而热噪声增强的特征和去卷积输出的不规则性被限制为产生单点去模糊输出。

14. 发明授权

US07629920B1 Entropy method for range alignment for integration of target returns 有权
标题翻译：用于整合目标回报的范围对齐的熵方法
公开(公告)号：US07629920B1
公开(公告)日：2009-12-08
申请号：US11861718
申请日：2007-09-26
申请人： Parker L. Kuhl , Rao M. Nuthalapati , Harry Urkowitz
发明人： Parker L. Kuhl , Rao M. Nuthalapati , Harry Urkowitz
IPC分类号： G01S13/52 , G01S13/534
CPC分类号： G01S13/64
摘要： The proper timing or alignment for coherent or noncoherent integration of radar pulses returned from a potentially moving target is determined by determining the entropy associated with sets of range samples based on a plurality of different velocity hypotheses. That set associated with the minimum entropy is deemed to be the correct velocity hypothesis, and integration is then performed using the velocity hypothesis so determined.
摘要翻译：通过基于多个不同的速度假设确定与范围样本集相关联的熵来确定从潜在移动目标返回的雷达脉冲的相干或非相干积分的适当定时或对准。与最小熵相关联的集合被认为是正确的速度假设，然后使用如此确定的速度假设来执行积分。

15. 发明授权

US07345625B1 Radar polarization calibration and correction 有权
标题翻译：雷达极化校准和校正
公开(公告)号：US07345625B1
公开(公告)日：2008-03-18
申请号：US11237531
申请日：2005-09-28
申请人： Harry Urkowitz
发明人： Harry Urkowitz
IPC分类号： G01S7/40
CPC分类号： G01S7/026 , G01S7/4017
摘要： A polarimetric radar system transmits a signal which is nominally the desired polarization, but which may deviate therefrom. A calibration operation is performed using a symmetrical radar reflector, to determine the gains and phases of reception of two mutually orthogonal components of the received reflected signal which result in nulling of the two polarization components of the reflected signal. These gains and phases represent receive corrections which result in a simulation of perfect polarization purity on both transmission and reception. The corrections established during calibration are applied to the receive signals during normal (non-calibration) operation, to improve the effective polarization of the transmission and reception.
摘要翻译：偏振雷达系统传输名义上是所需极化但可能偏离的信号。使用对称的雷达反射器执行校准操作，以确定接收到的反射信号的两个相互正交的分量的接收的增益和相位，这导致反射信号的两个偏振分量的归零。这些增益和相位表示接收校正，其导致在发射和接收两者上模拟完美的极化纯度。在正常（非校准）操作期间，在校准期间建立的校正被应用于接收信号，以改善发射和接收的有效极化。

16. 发明授权

US5376939A Dual-frequency, complementary-sequence pulse radar 失效
标题翻译：双频，互补序列脉冲雷达
公开(公告)号：US5376939A
公开(公告)日：1994-12-27
申请号：US79725
申请日：1993-06-21
申请人： Harry Urkowitz
发明人： Harry Urkowitz
IPC分类号： G01S7/42 , G01S13/24 , G01S13/28 , G01S13/522 , G01S13/87 , G01S13/42
CPC分类号： G01S7/42 , G01S13/288 , G01S13/24 , G01S13/522 , G01S13/87
摘要： A radar system simultaneously transmits first and second signals toward a target at higher and lower carrier frequencies, respectively. Each carrier is phase-modulated by a set of pulses. The first set of pulses is dispersed in time, and the second set of pulses is mutually complementary thereto. The transmitted pulses are reflected by the target and received simultaneously. The received signals are processed separately by Doppler filtering. Each Doppler-filtered return is code-matched filtered, and the filtered signals in each Doppler channel are summed with the corresponding Doppler-and-code-matched-filtered signals originating from the other transmitted frequency, to form range signals. Each range signal has its main lobe enhanced and its sidelobes suppressed by the summing of the code-matched-filtered mutually complementary echoes.
摘要翻译：雷达系统分别在较高和较低载波频率处向目标发送第一和第二信号。每个载波被一组脉冲相位调制。第一组脉冲在时间上分散，第二组脉冲与其互补。所发送的脉冲被目标反射并同时接收。接收的信号通过多普勒滤波分别处理。每个多普勒滤波返回值进行码匹配滤波，并将每个多普勒信道中的滤波信号与源自其他发射频率的相应的多普勒和码匹配滤波信号相加，形成范围信号。每个范围信号的主瓣增强，并且其旁瓣通过码匹配过滤的互补回波的求和来抑制。

17. 发明授权

US5157403A Noise correction in radars for diffuse targets 失效
标题翻译：用于漫射目标的雷达中的噪声校正
公开(公告)号：US5157403A
公开(公告)日：1992-10-20
申请号：US770846
申请日：1991-10-04
申请人： Harry Urkowitz
发明人： Harry Urkowitz
IPC分类号： G01S7/32 , G01S7/292 , G01S13/526 , G01S13/53 , G01S13/95
CPC分类号： G01S13/526 , G01S13/951 , G01S7/2927
摘要： A ranging system such as a radar system transmits signal pulses toward a diffuse target, such as an atmospheric disturbance. The echoes are processed by quantizing and by doppler filtering to produce a plurality of frequency components representing the radial velocities of various parts of the disturbance, which components are expected to be contaminated by an unknown amount of noise. The noise value is established by squaring the echo signals to produce power-representative signals. The signal samples are ranked according to amplitude, and one or more of the largest-value samples are discarded to reduce the order of the sample set. A Kolmogorov-Smirnov test statistic is generated and compared with a threshold established by the desired confidence level. If the test statistic exceeds the threshold, the order of the sample set is again reduced, and the test statistic again compared with the threshold. The noise level is deemed to be represented by the current reduced-order set when the test statistic does not exceed the threshold.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式