Author(s): XU Zhi-min
Pages: 3-8
Year: 2014 Issue:  7
Journal: Telecommunication Engineering
Keyword:  satellite navigation receiver; multi-frequency band; navigation signals simulator; RF retrans-mission; airborne equipment;
Abstract: 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.