[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.11003/JPNT.2022.11.2.127

Design of a Software-Based GPS RF Simulator

Noh, Jae Hee (Department of Electronics Engineering, Chungnam National University)
Jo, Gwang Hee (Department of Electronics Engineering, Chungnam National University)
Bu, Sung Chun (LIG Nex1)
Ko, Yo Han (LIG Nex1)
Park, Chansik (Department of Control and Robotics Engineering, Chungbuk National University)
Lee, Sang Jeong (Department of Electronics Engineering, Chungnam National University)

Publication Information

Journal of Positioning, Navigation, and Timing / v.11, no.2, 2022 , pp. 127-134 More about this Journal

Abstract

In this paper, a low-cost, flexible GPS simulator based on USRP is designed as a general-purpose software wireless front-end. The simulator consists of a software GPS signal generator and a USRP-based RF transmitter. The simulator supports various scenarios including specified reception time, quantization bit level, I/Q data types, IF frequency, sampling frequency, SNR, ionospheric delay and user dynamics. The generated GPS RF signal is verified using the spectrum analyzer and off-the-shelf GNSS receivers such as U-blox M8T. The experimental results shows that the difference between generated and real live signal is ignorable. It is expected that designed GPS simulator can be used to GNSS signal design, receiver design and signal processing algorithms such as anti-jamming.

Keywords

GPS simulator; USRP; IF signal generator;

Citations & Related Records

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