首页>
外国专利>
Method and apparatus for digitally compensating for the nonlinearity of the voltage controlled oscillator in a radar system (VCO)
Method and apparatus for digitally compensating for the nonlinearity of the voltage controlled oscillator in a radar system (VCO)
展开▼
机译:用于数字补偿雷达系统(VCO)中压控振荡器的非线性的方法和装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
An apparatus for correcting for nonlinearities in modulation systems includes a transmitter (24, 28, 48, 50, 52) for transmitting a time varying modulated radar signal (56). A receiver (58, 62) receives an echo signal (60) resulting from reflection of the transmitted modulated signal (56). A mixer (48) compares the transmitted signal against the echo signal and providing a comparison signal indicative of the comparison. The comparison signal is sampled by an A/D converter (74). The A/D convertor (74) provides a sampled comparison signal to a controller/DSP (22). Controller/DSP (22) resamples the sampled comparison signal at selected resample times and effectively varies the selected resample times to correct for nonlinearities in the comparison signal resulting from nonlinearities of the transmitted time varying modulated signal.
展开▼
机译:一种用于校正调制系统中的非线性的设备,包括用于发送时变调制雷达信号(56)的发射机(24、28、48、50、52)。接收器(58、62)接收由发射的调制信号(56)的反射产生的回波信号(60)。混频器(48)将发送的信号与回波信号进行比较,并提供表示该比较的比较信号。比较信号由A / D转换器(74)采样。 A / D转换器(74)将采样的比较信号提供给控制器/ DSP(22)。控制器/ DSP(22)以选定的重采样时间对取样的比较信号进行重采样,并有效地改变选定的重采样时间,以校正由于所传输的时变调制信号的非线性而导致的比较信号中的非线性。
展开▼