Software Simulation Method for Digital IF GNSS Signal
Data simulation is an important auxiliary method for baseband signal processing algorithm design of digital IF GNSS receiver.Especially when the high sensitivity and high dynamic receivers are developed,or multipath and cross correlation mitigation techniques are considered,exact and complete tests under all kinds of necessary scenes can be carried out with the IF signal data which is generated by software simulation method.With this method,the developing efficiency can be improved and the cost can be cut down.In this paper,precise model of the IF signal is given firstly through analyzing GNSS receivers RF processing flow.Then,considering the discrete characteristic of software processing,the IF signal simulation flow and block of the simulation software are designed.Finally,the specific design process is given through a design example.When the IF signal simulation software is used for testing baseband signal processing algorithms,GNSS receivers IF signal data under every necessary test scene can be generated just by parameter adjustment.
GNSS receiver Digital IF signal Software simulation Spectrum aliasing Band limiting filter
Xiangyu Wu Jinrui Liu Hang Gong Gang Ou
Satellite Navigation R&D Center, National Univ.of Defense Technology, China
国际会议
太原
英文
137-140
2012-12-08（万方平台首次上网日期，不代表论文的发表时间）