电子设计工程
電子設計工程
전자설계공정
ELECTRONIC DESIGN ENGINEERING
2014年
12期
138-140
,共3页
低截获概率%二相编码信号%模糊度函数%分辨力
低截穫概率%二相編碼信號%模糊度函數%分辨力
저절획개솔%이상편마신호%모호도함수%분변력
low probability of intercept%two-phase coded signal%ambiguity function%resolution
二相编码信号应用于低截获自导声纳波形设计，具有较好的性能。本文着重研究了二相编码信号的模糊函数及频谱，仿真实验表明二相编码信号距离分辨力及速度分辨力与信号带宽和信号时宽分别对应相关。信号带宽越大则距离分辨力越高，信号时宽越长则速度分辨力越高。同时信号带宽亦与信号频谱幅度成反比关系。信号带宽越大，信号频谱幅度越低，功率谱密度亦越低。因此，选择适当的时宽、带宽，二相编码信号具有较好的低截获性能。
二相編碼信號應用于低截穫自導聲納波形設計，具有較好的性能。本文著重研究瞭二相編碼信號的模糊函數及頻譜，倣真實驗錶明二相編碼信號距離分辨力及速度分辨力與信號帶寬和信號時寬分彆對應相關。信號帶寬越大則距離分辨力越高，信號時寬越長則速度分辨力越高。同時信號帶寬亦與信號頻譜幅度成反比關繫。信號帶寬越大，信號頻譜幅度越低，功率譜密度亦越低。因此，選擇適噹的時寬、帶寬，二相編碼信號具有較好的低截穫性能。
이상편마신호응용우저절획자도성납파형설계，구유교호적성능。본문착중연구료이상편마신호적모호함수급빈보，방진실험표명이상편마신호거리분변력급속도분변력여신호대관화신호시관분별대응상관。신호대관월대칙거리분변력월고，신호시관월장칙속도분변력월고。동시신호대관역여신호빈보폭도성반비관계。신호대관월대，신호빈보폭도월저，공솔보밀도역월저。인차，선택괄당적시관、대관，이상편마신호구유교호적저절획성능。
Two-phase encoded signal is applied to low intercept homing sonar waveform design, with better low interception performance. This paper focuses on its ambiguity function and the spectrum, simulation results show that two-phase coded signal range resolution and velocity resolution and signal bandwidth and signal width corresponding correlation. Signal bandwidth greater the distance the higher the resolution, the longer the signal width the higher the speed resolution. While the signal bandwidth is also inversely proportional to the signal amplitude spectrum. Signal bandwidth greater, the lower the amplitude of the signal spectrum, power spectral density is also lower. Therefore, when you select the appropriate width, bandwidth, two-phase coded signal has a better LPI performance.
