-
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
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。
-
公开(公告)号：US09684070B2
公开(公告)日：2017-06-20
申请号：US14137806
申请日：2013-12-20
CPC分类号： G01S13/584 , G01S7/038 , G01S7/35 , G01S7/354 , G01S7/4004 , G01S7/4017 , G01S7/411 , G01S13/34 , G01S13/343
摘要： A radar apparatus measures at least one characteristic of at least one object. 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 quiet switch quiets the reflected radar signal and determines the previously stored compensation signal, during calibration of the radar apparatus, and the received signal is written into the compensation signal memory. Switched loads can be used to quiet the reflected radar signal. For field calibration, the compensated signal can be adjusted but not necessarily written back into the compensation signal memory.
-
公开(公告)号：US20150331091A1
公开(公告)日：2015-11-19
申请号：US14137806
申请日：2013-12-20
CPC分类号： G01S13/584 , G01S7/038 , G01S7/35 , G01S7/354 , G01S7/4004 , G01S7/4017 , G01S7/411 , G01S13/34 , G01S13/343
摘要： A radar apparatus measures at least one characteristic of at least one object. 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 quiet switch quiets the reflected radar signal and determines the previously stored compensation signal, during calibration of the radar apparatus, and the received signal is written into the compensation signal memory. Switched loads can be used to quiet the reflected radar signal. For field calibration, the compensated signal can be adjusted but not necessarily written back into the compensation signal memory.
摘要翻译： 雷达装置测量至少一个物体的至少一个特性。 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。 在雷达装置的校准期间，安静的开关将对反射雷达信号进行置位并确定先前存储的补偿信号，并将接收的信号写入补偿信号存储器。 开关负载可用于安静反射的雷达信号。 对于现场校准，可以调整补偿信号，但不一定将其写回到补偿信号存储器中。
-
-
搜索结果
3 条记录 (耗时 0.027 秒)
