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A power distributing strategy of GNSS spoofing signal under dual-threshold

The traditional GNSS spoofing signals power distribution strategy only considers availability and validity in single channel mode without multiple channel mode. Therefore, a new strategy based on acquisition and tracing performance threshold is proposed. The relationship between the signal acquisition/tracking performance and carrier-to-noise ratio (C/N0) is analyzed. Then the influence of spoofing signal power on C/N0 is also analyzed through taking cross-correlation interference into consideration. The optimal spoofing power is calculated by the strategy under the C/N0 constraints and corresponding objective functions to different spoofing signal detecting. Simulations show that spoofing signal injection will be realized if the multiple spoofing power is −143.8dBW and denial power is 158.86dBW or the minimum elevation spoofing power is −124.04dBW. The concealment of interference is enhanced when it deals with the wideband white noise detection.