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http://dx.doi.org/10.11003/JPNT.2019.8.4.153

Development of End-to-end Numerical Simulator for Next Generation GNSS Signal Design  

Shin, Heon (Autonomous Navigation Lab, Inha University)
Han, Kahee (Autonomous Navigation Lab, Inha University)
Won, Jong-Hoon (Department of Electrical Engineering, Inha University)
Publication Information
Journal of Positioning, Navigation, and Timing / v.8, no.4, 2019 , pp. 153-164 More about this Journal
Abstract
This paper presents the development of an end-to-end numerical simulator for signal design of the next generation global navigation satellite system (GNSS). The GNSS services are an essential element of modern human life, becoming a core part of national infra-structure. Several countries are developing or modernizing their own positioning and timing system as their demand, and South Korea is also planning to develop a Korean Positioning System (KPS) based on its own technology, with the aim of operation in 2034. The developed simulator consists of three main units such as a signal generator, a channel unit, and a receiver. The signal generator is constructed based on the actual navigation satellite payload model. For channels, a simple Gaussian channel and land mobile satellite (LMS) multipath channel environments are implemented. A software receiver approach based on a commercial GNSS receiver model is employed. Through the simulator proposed in this paper, it is possible to simulate the entire transceiver chain process from signal generation to receiver processing including channel effect. Finally, numerical simulation results for a simple example scenario is analyzed. The use of the numerical signal simulator in this paper will be ideally suited to design a new navigation signal for the upcoming KPS by reducing the research and development efforts, tremendously.
Keywords
signal design; numerical simulator; Korea positioning system; GNSS;
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