Hypothesis Test-based Detection of Wi-Fi Interference on NavIC/IRNSS S-band Signal
| Autor: | Shweta Shah, Darshna D. Jagiwala, Priyanka L. Lineswala |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
050210 logistics & transportation
010504 meteorology & atmospheric sciences Computer science 05 social sciences Real-time computing Spectral density Navigation system Ocean Engineering Satellite system Oceanography Communications system Interference (wave propagation) 01 natural sciences Statistical power 0502 economics and business S band 0105 earth and related environmental sciences Statistical hypothesis testing |
| Zdroj: | Journal of Navigation. 72:931-947 |
| ISSN: | 1469-7785 0373-4633 |
| DOI: | 10.1017/s037346331900002x |
| Popis: | The Navigation with Indian Constellation (NavIC)/Indian Regional Navigation Satellite System (IRNSS) is an emerging satellite navigation system that provides an independent navigation system for positioning and timing services in India and up to 1,500 km from its borderline. The dual frequency NavIC system uses the L5 frequency and S-band for navigation. These navigation signals are extremely weak and susceptible to interference when they are received on Earth's surface. Moreover, the performance of these bands may be degraded by other band or out-of-band communication systems, which can become the major threat to the performance of a NavIC receiver. The main focus of this paper is to detect real-time interference of Wi-Fi signals in the S-band of the NavIC receiver. The results are prepared with respect to the Power Spectral Density (PSD), execution of acquisition stage and the detection of Wi-Fi interference with two sample hypothesis testing methods including the Kolmogorov-Smirnov (KS)-test, the t-test and the Variance (var)-test. A performance analysis of the p-value is used to measure the evidence of interference existence for hypothesis testing, decision hypothesis and probability of detection are evaluated for each hypothesis method. The results show the severity of the Wi-Fi signal as a potential source of interference for future NavIC applications. |
| Databáze: | OpenAIRE |
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