计算机应用与软件
計算機應用與軟件
계산궤응용여연건
Computer Applications and Software
2015年
9期
123-126
,共4页
复合调制%伪码调相%线性调频%定距系统
複閤調製%偽碼調相%線性調頻%定距繫統
복합조제%위마조상%선성조빈%정거계통
Complex modulation%Pseudo code%PM%LFM%Ranging system
针对伪码调相与线性调频复合调制定距系统的定距精度差的问题，提出一种基于自相关函数包络检测的复合调制定距方法。把微弱信号检测方法应用于复合调制定距系统，建立自相关函数包络检测方法的定距原理，推导复合调制探测系统的定距方程，建立复合调制定距系统的虚拟样机，分析其定距性能。仿真结果表明，该方法较伪码调相定距方法，定距精度有明显改善。该方法可以有效应用于无线电测距系统。
針對偽碼調相與線性調頻複閤調製定距繫統的定距精度差的問題，提齣一種基于自相關函數包絡檢測的複閤調製定距方法。把微弱信號檢測方法應用于複閤調製定距繫統，建立自相關函數包絡檢測方法的定距原理，推導複閤調製探測繫統的定距方程，建立複閤調製定距繫統的虛擬樣機，分析其定距性能。倣真結果錶明，該方法較偽碼調相定距方法，定距精度有明顯改善。該方法可以有效應用于無線電測距繫統。
침대위마조상여선성조빈복합조제정거계통적정거정도차적문제，제출일충기우자상관함수포락검측적복합조제정거방법。파미약신호검측방법응용우복합조제정거계통，건립자상관함수포락검측방법적정거원리，추도복합조제탐측계통적정거방정，건립복합조제정거계통적허의양궤，분석기정거성능。방진결과표명，해방법교위마조상정거방법，정거정도유명현개선。해방법가이유효응용우무선전측거계통。
For the problem of poor ranging accuracy in complex modulation ranging system with pseudo code phase modulation (PM)and linear frequency modulation (LFM),we proposed a complex modulation ranging method which is based on autocorrelation function envelope detection.We applied the weak signal detection method to complex modulation ranging system,set up the ranging principle of autocorrelation function envelope detection method,deduced the ranging equation of complex modulation detection system,established virtual prototype of complex modulation ranging system,and analysed its ranging performance.Simulation results showed that compared with pseudo code phase modulation ranging method,its ranging accuracy was improved greatly.This method can be effectively used in radio ranging system.
