公开(公告)号：US09448301B2

公开(公告)日：2016-09-20

申请号：US14137781

申请日：2013-12-20

申请人： Aamir A Abbasi ,  James C Graves, Jr. ,  Debra A Jones ,  Michael E Lazar ,  Ramanujapuram A Raghuvir

发明人： Aamir A Abbasi ,  James C Graves, Jr. ,  Debra A Jones ,  Michael E Lazar ,  Ramanujapuram A Raghuvir

IPC分类号： G01S13/02 ,  G01S7/35 ,  G01S13/34 ,  G01S13/88 ,  G01S13/93 ,  G01S7/40 ,  G01S7/41 ,  G01S13/56

CPC分类号： G01S7/354 ,  G01S7/4008 ,  G01S7/4021 ,  G01S7/41 ,  G01S13/343 ,  G01S13/56 ,  G01S13/88 ,  G01S13/931 ,  G01S2007/356 ,  G01S2007/4013

摘要： A radar apparatus measures at least one characteristic of at least one object even in a near field. A sweep generator generates a sweep signal to modulate an oscillator to generate a varying frequency signal. A transmitter transmits the varying frequency signal as a radar signal. A receiver receives a reflected radar signal to produce a received signal using the varying frequency signal. A compensation signal memory holds a previously stored compensation signal. A compensation circuit compensates the received signal based on the previously stored compensation signal to produce a compensated received signal. A frequency transformation circuit transforms the compensated received signal to produce a frequency spectrum signal. A peak detector measures the characteristic of the object based on a peak of the frequency spectrum signal. When operating in a calibration mode and the reflected radar signal is quieted, the received signal is written into the compensation signal memory.

摘要翻译： 雷达装置即使在近场也测量至少一个物体的至少一个特征。 扫描发生器产生扫描信号以调制振荡器以产生变化的频率信号。 发射机发射变化的频率信号作为雷达信号。 接收机接收反射的雷达信号，以使用变化的频率信号产生接收的信号。 补偿信号存储器保持先前存储的补偿信号。 补偿电路基于先前存储的补偿信号补偿接收信号，以产生经补偿的接收信号。 频率变换电路对补偿后的接收信号进行变换，生成频谱信号。 峰值检测器基于频谱信号的峰值来测量对象的特性。 当在校准模式下操作并且反射的雷达信号静音时，接收的信号被写入补偿信号存储器。