近接頻率訊號之參數估測

Abstract

此篇論文呈現一個演算法以估測二個頻率非常接近之弦波訊號的參數。由於此波訊號之頻率太靠近，以致於很難使用濾波器分別濾出其中之一。我們的方法是設計一種特別的取樣方式來達成零干擾，並且運用統計之概念估測訊號中振幅和相位的變化。此方法架構於簡單的取樣技術，故可降低接收器之複雜度。此技術可運用於遙感系統和雷達系統，藉此可以有效偵測信號頻率和相位的訊息。

This paper presents an algorithm to estimate the parameters of two closely spaced sinusoid signals. Since the frequencies of two sinusoid signals are very close, it is difficult to separate them with filtering. Our approach is to design a special sampling method to achieve zero interference under ideal conditions, and estimate the variations of amplitude and phase with statistic approach. It is based on a simple sampling technique, which can reduce the complexity of detection receiver. The algorithm can be applied to remote sensing system and radar system, in order to detect the desired amplitude and phase information.