SYSTEMS AND METHODS FOR SPURIOUS SIGNAL REDUCTION IN MULTI-MODE DIGITAL NAVIGATION RECEIVERS

摘要

Systems and methods for reducing spurious signals in digital receivers. A system includes a digital navigation receiver having a controllable reference oscillator configured to generate a reference frequency based on a control signal input and a control signal generator in signal communication with the controllable reference oscillator. The control signal generator is configured to generate a waveform that sweeps in frequency such that the reference frequency is based on the waveform. A triangular waveform that sweeps in frequency is used in an example embodiment. A method includes generating a waveform that sweeps in frequency and controlling the reference oscillator based on the waveform.