Iranian Journal of Electrical and Electronic Engineering
Iran University of Science and Technology
Thu, Oct 8, 2026
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Volume 22, Issue 4 (December 2026)
IJEEE 2026, 22(4): 4179-4179 |
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Dabaghi Daryan N, Mosavi M R, Mirzakuchaki S, Tohidi S. Advanced GLONASS Satellite Simulator Based on Fuzzy Logic for Optimizing Navigation Precision through Enhanced GDOP. IJEEE 2026; 22 (4) :4179-4179
URL: http://ijeee.iust.ac.ir/article-1-4179-en.html
URL: http://ijeee.iust.ac.ir/article-1-4179-en.html
Abstract: (1240 Views)
GNSS simulators are essential tools for testing and validating satellite navigation system receivers across various civil applications. This study introduces an improved GLONASS satellite simulator to optimize navigation precision by enhancing the satellite constellation's Dilution of Precision (DOP). The proposed simulator operates in two steps. In the first step, the system performs a full-day search to identify time intervals with minimal DOP using a local moving-average technique. In the second step, the impact of adding one virtual satellite—selected using fuzzy logic and evaluated through the Residual Geometric Dilution of Precision (RGDOP) metric—is examined to minimize Geometric Dilution of Precision (GDOP). The fuzzy system uses two inputs (RGDOP and elevation angle), where RGDOP is modeled with four Gaussian membership functions (very small, small, medium, large), and the elevation angle is modeled with three triangular membership functions (small, medium, large). These scenarios are tested on a Software-Defined Radio (SDR) and then a u-blox M8 receiver to evaluate and compare improvements in positioning accuracy across the tuned configurations. The results show that both optimization stages lead to significant gains in navigation performance. The first scenario leads to a 24.4% improvement in accuracy, while the second scenario achieves an even greater enhancement of 54.9%, highlighting the effectiveness of these approaches in reducing positioning error.
Keywords: GLONASS, Signal Modeling, Elevation, GDOP Optimization, Satellite Constellation Design, Fuzzy Weighted Logic, GNSS Simulation.
Type of Study: Research Paper |
Subject:
Signal Processing
Received: 2025/10/18 | Revised: 2026/08/26 | Accepted: 2026/02/19
Received: 2025/10/18 | Revised: 2026/08/26 | Accepted: 2026/02/19
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