1999 · 168 citations · 0 references
EngineeringElectrical EngineeringAnalog ElectronicsDigital CommunicationGlobal Navigation Satellite SystemsDigital Signal ProcessingReceiver FunctionsAutocorrelation FunctionAutocorrelation Function AnalysisCarrier TrackingCode TrackingCode Tracking PerformanceSignal Ambiguity Resolution
Split‑spectrum offset‑carrier military signals, considered for future L1/L2 use, pose a technical challenge to receiver code‑tracking. The algorithm aims to resolve ambiguity from the multipeaked autocorrelation of offset‑carrier signals, thereby reducing false‑lock probability. The algorithm is defined and its performance characteristics are discussed through simulation. Simulation results show the algorithm’s performance characteristics.
A split-spectrum military signal seems a likely candidate for future incorporation into L1 and/or L2. These split signal modulations, often referred to as “Offset Carrier” waveforms, present a technical challenge to the code tracking capability of the receiver. This paper describes a novel algorithm, which can be used by a receiver to track the offset carrier signal. The purpose of the algorithm is to resolve the ambiguity that arises due to the multipeaked autocorrelation function of the new signal, thus reducing false-lock probability. The aalgorithm is defined, some aspects of its performance are discussed, and simulation results are given.