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1. 发明授权

US07151481B1 Method for detecting targets and determining their distance via an HPRF radar system 有权
标题翻译：通过HPRF雷达系统检测目标并确定其距离的方法
公开(公告)号：US07151481B1
公开(公告)日：2006-12-19
申请号：US11269679
申请日：2005-11-09
申请人： Andreas Strecker , Andreas Wieszt , Nergess Al-Youssof , Thomas Mahr
发明人： Andreas Strecker , Andreas Wieszt , Nergess Al-Youssof , Thomas Mahr
IPC分类号： G01S13/12
CPC分类号： G01S13/22 , G01S7/2923 , G01S13/20
摘要： A method for detecting targets and determining their distance by means of an HPRF radar system including a transmitter for transmitting bursts having a preselectable number Z of transmission pulses and a preselectable pulse repetition frequency PRF and a receiver for receiving the echo signals. Successive bursts are transmitted with a preselectable time lag, where the time lag corresponds to a preselectable number E of transmission pulses. A data record of Z+E detected signals is generated, where each detected signal consists of superimposed echo signals from different unique distance ranges, each distance range having a number A of distance lines, each line having Z+E distance cells. A target is detected by calculating a Z+E-point fast Fourier transform for each distance line, and determining when the signal amplitude is greater than a preselectable threshold value. The distance to a target is determined by calculating spectra of Z-point fast Fourier transforms for the distance lines by shifting a Z-point FFT window incrementally over the Z+E distance cells of a distance line.
摘要翻译：一种用于通过HPRF雷达系统检测目标并确定其距离的方法，所述HPRF雷达系统包括用于发送具有可选择数量Z的传输脉冲的突发的发射机和预选的脉冲重复频率PRF以及用于接收回波信号的接收机。连续突发以预选的时间延迟发送，其中时间延迟对应于传输脉冲的可预选数量E. 产生Z + E检测信号的数据记录，其中每个检测信号由来自不同唯一距离范围的叠加回波信号组成，每个距离范围具有距离线数A，每行具有Z + E距离单元。通过对每个距离线计算Z + E点快速傅里叶变换，以及确定信号幅度何时大于预选阈值来检测目标。通过在距离线的Z + E距离单元上逐渐移动Z点FFT窗口来计算距离线的Z点快速傅里叶变换的光谱，来确定到目标的距离。

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