现代雷达
現代雷達
현대뢰체
Modern Radar
2015年
10期
14-17
,共4页
雷达%通信%一体化%线性调频%二进制相移键控%高分辨距离像
雷達%通信%一體化%線性調頻%二進製相移鍵控%高分辨距離像
뢰체%통신%일체화%선성조빈%이진제상이건공%고분변거리상
radar%communication%integration%LMF%BPSK%high resolution range profile
针对雷达通信一体化系统中雷达成像与通信共享信号的设计,分析了常见的一体化信号设计模式. 首先,利用线性调频信号相位调制传递通信信息,设计了一种基于线性调频—二进制相移键控( LFM-BPSK)调制的雷达通信一体化信号,并给出了运动扩展目标的回波信号表达式;其次,通过计算单脉冲回波信号采样的逆离散傅里叶变换或离散傅里叶变换,提出了基于一体化信号合成高分辨距离像方法;然后,依据相位因子对傅里叶变换的影响,分析了多普勒效应对一体化信号合成距离像的影响;最后,对一体化信号的雷达成像性能进行了仿真计算.
針對雷達通信一體化繫統中雷達成像與通信共享信號的設計,分析瞭常見的一體化信號設計模式. 首先,利用線性調頻信號相位調製傳遞通信信息,設計瞭一種基于線性調頻—二進製相移鍵控( LFM-BPSK)調製的雷達通信一體化信號,併給齣瞭運動擴展目標的迴波信號錶達式;其次,通過計算單脈遲迴波信號採樣的逆離散傅裏葉變換或離散傅裏葉變換,提齣瞭基于一體化信號閤成高分辨距離像方法;然後,依據相位因子對傅裏葉變換的影響,分析瞭多普勒效應對一體化信號閤成距離像的影響;最後,對一體化信號的雷達成像性能進行瞭倣真計算.
침대뢰체통신일체화계통중뢰체성상여통신공향신호적설계,분석료상견적일체화신호설계모식. 수선,이용선성조빈신호상위조제전체통신신식,설계료일충기우선성조빈—이진제상이건공( LFM-BPSK)조제적뢰체통신일체화신호,병급출료운동확전목표적회파신호표체식;기차,통과계산단맥충회파신호채양적역리산부리협변환혹리산부리협변환,제출료기우일체화신호합성고분변거리상방법;연후,의거상위인자대부리협변환적영향,분석료다보륵효응대일체화신호합성거리상적영향;최후,대일체화신호적뢰체성상성능진행료방진계산.
In allusion to the design of a sharing signal for radar imaging and communication in integrated radar and communication system, a general design mode is analyzed for integrated signal .First, an integrated radar and communication signal is designed based on LFM-BPSK modulation , which can transmit with communication information phase modulation .The expression is given for the echo signal from an extended target .Secondly , by way of computing inverse discrete Fourier transform or discrete Fourier transform of echo signal sample , a method of synthesizing range profile is proposed based on integrated signal .Then, according to the effect of phase factor on fourier transform , the influence of Doppler effect on synthesizing range profile is analyzed for the new integration signal .Finally, some simulation is provided for verified the theoretic analysis in radar imaging performance of the new signal.
