﻿ 基于精确相差测向的机载多普勒频移计算

基于精确相差测向的机载多普勒频移计算Calculating of Airborne Doppler Shift Based on Accurate Phase Difference DF

Abstract: Firstly, the derivation process of an accurate DF formula based on one-dimensional linear array with two baselines is described. Then, the Doppler shift formula based on phase difference measuring is obtained by simple substitution for angle according to Doppler shift equation. As compared with the Doppler shift formula derived from approximative DF formula based on phase difference measuring, the one derived from accurate DF formula is more veracious. Error analysis shows that the measurement error of Doppler shift is less than 5 Hz within arrival angle range  when baseline is about dozens of wavelengths.

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