paper 150304091546

Abstract

Carrier phase observation is a high accuracy ranging method through tracking the phase of carrier signal and could be used in various applications. Carrier signal of the target in motion is a typical nonstationary signal and its model is hard to acquire. This paper describes a model-free approach of obtaining the total phase and the instantaneous frequency of the carrier signal in real-time with high resolution. The total phase is calculated and denoised using Savitzky-Golay filter to reducing measure noise. Meanwhile, the instantaneous frequency could be obtained by deriving the smoothed total phase which can also be implemented by a FIR filter like Savitzky-Golay filter. Simulation shows the performance of the proposed method.

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Wei Liu

Qiao Meng

Jifei Tang

Quantao Yu

Tianyi Zhang