TY - GEN
T1 - Design and implementation of a real-time L2C IF signal simulator
AU - Qing, Liu
AU - Yanhong, Kou
AU - Hongwei, Zhou
PY - 2010
Y1 - 2010
N2 - Commercial GNSS RF signal simulators are expensive and few of them provide modernized GPS L2C signal simulation capability so far. Based on the SDR architecture of a GNSS RF signal simulator developed by Beihang University, China, this paper focuses on the design and implementation of the L2C IF signal generator. The calculation and updating of waveform control parameters, the modulation of baseband signals, the combination of multiple satellite channel signals, and the generation of analog IF signal are implemented using DSP + FPGA + DAC. A method of fast alignment of the initial phase of L2C CL code is proposed, and the power control of the combined signal is also explored. The accuracy and quality of the simulated signals are validated by the acquisition, tracking and positioning results using a software receiver. The L2C signal simulator can serve as a signal source for the development of high-performance receivers.
AB - Commercial GNSS RF signal simulators are expensive and few of them provide modernized GPS L2C signal simulation capability so far. Based on the SDR architecture of a GNSS RF signal simulator developed by Beihang University, China, this paper focuses on the design and implementation of the L2C IF signal generator. The calculation and updating of waveform control parameters, the modulation of baseband signals, the combination of multiple satellite channel signals, and the generation of analog IF signal are implemented using DSP + FPGA + DAC. A method of fast alignment of the initial phase of L2C CL code is proposed, and the power control of the combined signal is also explored. The accuracy and quality of the simulated signals are validated by the acquisition, tracking and positioning results using a software receiver. The L2C signal simulator can serve as a signal source for the development of high-performance receivers.
KW - Chip-by-chip time-division multiplexing
KW - GNSS signal simulator
KW - L2C signal
UR - https://www.scopus.com/pages/publications/79951983597
U2 - 10.1109/ICISE.2010.5690849
DO - 10.1109/ICISE.2010.5690849
M3 - 会议稿件
AN - SCOPUS:79951983597
SN - 9781424480968
T3 - 2nd International Conference on Information Science and Engineering, ICISE2010 - Proceedings
SP - 1952
EP - 1955
BT - 2nd International Conference on Information Science and Engineering, ICISE2010 - Proceedings
T2 - 2nd International Conference on Information Science and Engineering, ICISE2010
Y2 - 4 December 2010 through 6 December 2010
ER -