TY - JOUR
T1 - Dynamic GPS receiver carrier-wave Doppler analysis and loop tracking performance test
AU - Li, Jie
AU - Shen, Qiang
AU - Tang, Wan Ling
AU - Zhao, Hong Juan
AU - Peng, Hong Sheng
PY - 2010/2
Y1 - 2010/2
N2 - Against the problem that the ordinary GPS receiver can not work normally under the dynamic conditions of the cannon-launched guided ammunition, this paper adopts SPIRENT satellite signal simulator to analyze the carrier-wave Doppler frequency and its variation rate under several dynamic conditions, and generate the satellite signal under different dynamic status conditions of the carrier. A software receiver is utilized to perform the test to analyze on the performances of the tracking loop adopting the second-order and third-order phase-locked loops (PLL), the second-order PLL assisted by the first-order frequency-locked loop (FLL), and the third-order PLL assisted by the second-order FLL. It shows that when the acceleration is 40g, only PLL will lose lock, while the PLL assisted by the FLL tracks normally. However, in ballistic environment, the second-order PLL assisted by the first-order FLL tracks normally by one channel, the third-order PLL assisted by the second-order FLL tracks normally by two channels. This paper puts forward an improvement proposal for the carrier-wave tracking loop.
AB - Against the problem that the ordinary GPS receiver can not work normally under the dynamic conditions of the cannon-launched guided ammunition, this paper adopts SPIRENT satellite signal simulator to analyze the carrier-wave Doppler frequency and its variation rate under several dynamic conditions, and generate the satellite signal under different dynamic status conditions of the carrier. A software receiver is utilized to perform the test to analyze on the performances of the tracking loop adopting the second-order and third-order phase-locked loops (PLL), the second-order PLL assisted by the first-order frequency-locked loop (FLL), and the third-order PLL assisted by the second-order FLL. It shows that when the acceleration is 40g, only PLL will lose lock, while the PLL assisted by the FLL tracks normally. However, in ballistic environment, the second-order PLL assisted by the first-order FLL tracks normally by one channel, the third-order PLL assisted by the second-order FLL tracks normally by two channels. This paper puts forward an improvement proposal for the carrier-wave tracking loop.
KW - Carrier-wave tracking loop
KW - Doppler frequency shift
KW - Dynamic GPS receiver
KW - Satellite signal simulator
UR - http://www.scopus.com/inward/record.url?scp=77952003833&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:77952003833
SN - 1001-0645
VL - 30
SP - 136
EP - 139
JO - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
JF - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
IS - 2
ER -