天文研究与技术-国家天文台台刊
天文研究與技術-國傢天文檯檯刊
천문연구여기술-국가천문태태간
ASTRONOMICAL RESEARCH & TECHNOLOGY-PUBLICATIONS OF NATIONAL ASTRONOMICAL OBSERVATORIES OF CHINA
2014年
3期
224-229
,共6页
BPSK调制%BOC调制%中国区域定位系统( CAPS)%信号体制%调制方式
BPSK調製%BOC調製%中國區域定位繫統( CAPS)%信號體製%調製方式
BPSK조제%BOC조제%중국구역정위계통( CAPS)%신호체제%조제방식
BPSK modulation%BOC modulation%Chinese Area Positioning System (CAPS)%Signal system%Modulation
概述了二元相移键控(BPSK)调制以及二进制偏移载波(Binary Offset Carrier, BOC)的调制原理,并基于由中国科学院主导研发的中国区域定位系统( Chinese Area Positioning System, CAPS)的实际情况,对其调制信号的测距精度、跟踪性能、多径误差的影响做了分析。分析结果对于中国区域定位系统信号体制设计、调制方式的选取具有一定的借鉴意义。
概述瞭二元相移鍵控(BPSK)調製以及二進製偏移載波(Binary Offset Carrier, BOC)的調製原理,併基于由中國科學院主導研髮的中國區域定位繫統( Chinese Area Positioning System, CAPS)的實際情況,對其調製信號的測距精度、跟蹤性能、多徑誤差的影響做瞭分析。分析結果對于中國區域定位繫統信號體製設計、調製方式的選取具有一定的藉鑒意義。
개술료이원상이건공(BPSK)조제이급이진제편이재파(Binary Offset Carrier, BOC)적조제원리,병기우유중국과학원주도연발적중국구역정위계통( Chinese Area Positioning System, CAPS)적실제정황,대기조제신호적측거정도、근종성능、다경오차적영향주료분석。분석결과대우중국구역정위계통신호체제설계、조제방식적선취구유일정적차감의의。
This paper first briefly describes the principle of BPSK (Binary Phase Shift Keying ) modulation and BOC ( Binary Offset Carrier ) modulation .It then presents the analyses of the ranging precisions , the performance of tracking , and the multipath errors in using the two modulation methods .These are based on the real conditions of the Chinese Area Positioning System (CAPS), which was initiated by the Chinese Academy of Sciences.The results of our analyses can serve as guidance and have reference values in designing signal systems and choosing modulation methods .