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《Ordnance Industry Automation》 2004-01
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Receiving Principle and Location Technology of GPS

ZHANG Song-tao (Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621900, China)  
Pseudo-random code is a binary code list that can be predefined, repeated and copied, have random statistical characteristic. In communication of deep space, the receiving of low signal-to-noise and multi-address communication can be realized with pseudo-random code signal. The coherent signal for sum of copied and received and noise signals was calculated, location of maximum of coherent function was measured to confirm target distance. Pseudo-random code signal controlled by satellite clock was transmitted to receiver time delay via satellite antenna, native code was generated generator controlled by receiver clock, and sent it to correlator through displacement circuit, then native code and received satellite signal was calculated to gain coherent output.
【CateGory Index】: P228.4
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