无线电工程
無線電工程
무선전공정
Radio Engineering
2015年
12期
36-39
,共4页
BOC%精确捕获%自相关函数
BOC%精確捕穫%自相關函數
BOC%정학포획%자상관함수
binary offset carrier( BOC)%unambiguous acquisition%autocorrelation function
二进制偏移载波（ BOC）调制信号目前已经被广泛应用于全球卫星导航系统的信号体制设计中，与传统的BPSK信号相比能提供更好的码跟踪精度和抗多径能力。针对BOC信号的自相关函数多峰性导致伪码捕获模糊的问题，在介绍BOC信号特性的基础上，对4种BOC信号精确捕获算法进行了仿真验证，并对算法的捕获性能进行了对比评估，计算机仿真结果表明4种算法均能解决BOC信号捕获模糊的问题，这对充分发挥BOC信号的性能优势具有现实意义。
二進製偏移載波（ BOC）調製信號目前已經被廣汎應用于全毬衛星導航繫統的信號體製設計中，與傳統的BPSK信號相比能提供更好的碼跟蹤精度和抗多徑能力。針對BOC信號的自相關函數多峰性導緻偽碼捕穫模糊的問題，在介紹BOC信號特性的基礎上，對4種BOC信號精確捕穫算法進行瞭倣真驗證，併對算法的捕穫性能進行瞭對比評估，計算機倣真結果錶明4種算法均能解決BOC信號捕穫模糊的問題，這對充分髮揮BOC信號的性能優勢具有現實意義。
이진제편이재파（ BOC）조제신호목전이경피엄범응용우전구위성도항계통적신호체제설계중，여전통적BPSK신호상비능제공경호적마근종정도화항다경능력。침대BOC신호적자상관함수다봉성도치위마포획모호적문제，재개소BOC신호특성적기출상，대4충BOC신호정학포획산법진행료방진험증，병대산법적포획성능진행료대비평고，계산궤방진결과표명4충산법균능해결BOC신호포획모호적문제，저대충분발휘BOC신호적성능우세구유현실의의。
The signal based on BOC Modulation has been widely used in signal architecture design of global navigation systems. Compared with traditional BPSK signal,it can provide better tracking accuracy and better resistance to multipath.For pseudocode ambig?uous acquisition caused by multiple peaks of BOC signal,four unambiguous acquisition methods of BOC signal are simulated and veri?fied based on the characteristics of BOC signal,and the comparative evaluation for their acquisition performances are performed. The computer simulation results show that these four methods can effectively solve the problem of ambiguous acquisition of BOC signal, which has operation significance for the development of BOC signal performance advantages.
