Fig. 1. Relationship between dispersion coefficient and detection frequency.色散系数与探测频率的关系

Fig. 2. Ionospheric electron concentration curves at different times.不同时刻的电离层电子浓度曲线

Fig. 3. Comparison of echo spectra contaminated by the linear and nonlinear phases.线性和非线性相位污染的回波谱比较

Fig. 4. Path schematic of the multimode propagation.多模传播的路径示意图

Fig. 5. Relationship between radiation group distance and detection frequency.射线群距离与探测频率的关系

Fig. 6. Real spectrum before and after phase contamination.相位污染前后的实测频谱

Fig. 7. Estimation error of the phase contamination.相位污染的估计误差

Fig. 8. Range-Doppler spectra before and after phase contamination correction (color bar represents normalized power, and the unit is dB).相位污染校正前后的距离-多普勒谱(颜色条表示归一化功率, 单位是dB)