电讯技术
電訊技術
전신기술
TELECOMMUNICATIONS ENGINEERING
2014年
7期
3-8
,共6页
卫星导航接收机%多频段%导航信号源%转发式%机载设备
衛星導航接收機%多頻段%導航信號源%轉髮式%機載設備
위성도항접수궤%다빈단%도항신호원%전발식%궤재설비
satellite navigation receiver%multi-frequency band%navigation signals simulator%RF retrans-mission%airborne equipment
为解决机载接收机无法正常接收真实卫星导航信号的问题，提出了一种多体制转发式卫星导航信号源的总体设计方案，并分析了涉及的关键技术。采用“接收机+发射机”的原理，通过对卫星导航信号接收、解扩解调、抗干扰、频率变换、调制扩频和放大等处理，实现信号的转发。该方案支持当前全球多种主流卫星导航系统体制，例如 GPS、BDS 和 GLONASS 等信号，实际试验证明了其有效性。该技术方案还可用于导航设备研制、调试和通信导航的集成验证等特殊场景。
為解決機載接收機無法正常接收真實衛星導航信號的問題，提齣瞭一種多體製轉髮式衛星導航信號源的總體設計方案，併分析瞭涉及的關鍵技術。採用“接收機+髮射機”的原理，通過對衛星導航信號接收、解擴解調、抗榦擾、頻率變換、調製擴頻和放大等處理，實現信號的轉髮。該方案支持噹前全毬多種主流衛星導航繫統體製，例如 GPS、BDS 和 GLONASS 等信號，實際試驗證明瞭其有效性。該技術方案還可用于導航設備研製、調試和通信導航的集成驗證等特殊場景。
위해결궤재접수궤무법정상접수진실위성도항신호적문제，제출료일충다체제전발식위성도항신호원적총체설계방안，병분석료섭급적관건기술。채용“접수궤+발사궤”적원리，통과대위성도항신호접수、해확해조、항간우、빈솔변환、조제확빈화방대등처리，실현신호적전발。해방안지지당전전구다충주류위성도항계통체제，례여 GPS、BDS 화 GLONASS 등신호，실제시험증명료기유효성。해기술방안환가용우도항설비연제、조시화통신도항적집성험증등특수장경。
To solve the problem that airborne receiver cannot receive real satellite navigation signals,an o-verall design scheme of multi-band RF retransmission satellite navigation signals simulator is presented and related key techniques are analyzed. According to the principle of “a receiver+a transmitter”,the RF sig-nals of satellite are retransmitted through receiving navigation signal,de-spread-spectrum and demodula-tion,anti-interference processing,changing carrier frequency modulation and spread-spectrum amplifying. The scheme is suitable for GPS,BDS and GLONASS signals. Engineering application proves its effective-ness. The scheme can be used extensively in satellite navigation equipment development and verification of integration of communication and navigation.
