A model for assessing the impact of linear and nonlinear distortions on a GNSS receiver
| Autor: | Mariano Vergara, Gonzalo Seco-Granados, Matteo Sgammini, Felix Antreich, Christoph Enneking |
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| Rok vydání: | 2020 |
| Předmět: |
010504 meteorology & atmospheric sciences
Evil waveforms Computer science Delay-locked loop (DLL) Transmitter Pseudorange Ranging Loop performance 010502 geochemistry & geophysics 01 natural sciences Signal Physics::Geophysics Tracking performance Tracking error Nonlinear system GNSS applications Physics::Space Physics Electronic engineering General Earth and Planetary Sciences s Signal quality monitoring · Evil waveforms · Tracking performance · Delay-locked loop (DLL) 0105 earth and related environmental sciences Computer Science::Information Theory Signal quality monitoring |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | The tracking performance of a global navigation satellite system (GNSS) receiver is altered by signal distortions of different kinds, ranging from transmitter and receiver imperfections to various forms of channel impairments. Accurate modeling of the receiver performance in the presence of signal distortions allows to improve GNSS-based positioning, tighten error bounds, and thus enhance the integrity and the availability of the GNSS services. We present a model for the code-tracking loop performance of a GNSS receiver when the GNSS signal undergoes an arbitrary cascade of nonlinear and linear distortions. The impact of the distortions on the pseudorange estimation is analyzed by deriving closed-form expressions for the bias and variance of the tracking error. These analytical expressions are based on the well-known open-loop linearized delay-locked loop model. The validation is then performed using a GNSS software receiver that evaluates the tracking error numerically. |
| Databáze: | OpenAIRE |
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