CAJ | 학술논문

为满足宽带毫米波雷达对信号源的较高需求，设计了一种适用于宽带毫米波相参雷达的任意波形产生器。该信号源的核心器件为ADI公司最新的AD9914芯片，控制芯片为常用的Spartan3 FGPA芯片。该信号源能产生简单脉冲信号，幅度、相位、频率调制信号和线性调频信号等。测试了信号源的相参性，同时验证了信号的脉压性能，测试结果表明，该信号源具有很好的频率稳定性和相参性能，在加海明窗的情况下，脉冲压缩的副瓣可达-44 dB。经上变频，可输出带宽为800 MHz，中心频率为34.15 GHz的毫米波信号。
위만족관대호미파뢰체대신호원적교고수구，설계료일충괄용우관대호미파상삼뢰체적임의파형산생기。해신호원적핵심기건위ADI공사최신적AD9914심편，공제심편위상용적Spartan3 FGPA심편。해신호원능산생간단맥충신호，폭도、상위、빈솔조제신호화선성조빈신호등。측시료신호원적상삼성，동시험증료신호적맥압성능，측시결과표명，해신호원구유흔호적빈솔은정성화상삼성능，재가해명창적정황하，맥충압축적부판가체-44 dB。경상변빈，가수출대관위800 MHz，중심빈솔위34.15 GHz적호미파신호。
Random waveform generator that is applied to wideband millimeter wave (MMW) coherent radar is designed to meet the high requirements of signal source for MMW radar. The core device of the signal source is AD9914 produced latest by ADI company,the control chip is the common FPGA chip Spartan3. The simple pulse signals,amplitude modulation signals, phase modulation signals,frequency modulation signals and linear frequency modulation signals are generated by the signal source. The coherence of the signal source was tested and the pulse pressure performance of the signal was verified. Test results show that the designed signal source has perfect frequency stability and good coherence performance,the side lobe of the pulse pressure is reached to -44 dB with Hamming window. The millimeter?wave signals with the bandwidth of 800 MHz and the cen?ter frequency of 34.15 GHz can be output by the referred conversion.