“Refractivity-from-clutter” based on local empirical refractivity model<xref rid="cpb_27_12_128401fn1" ref-type="fn">*</xref><fn id="cpb_27_12_128401fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 41775027 and 41405025).</p></fn>

“Refractivity-from-clutter” based on local empirical refractivity model**

Project supported by the National Natural Science Foundation of China (Grant Nos. 41775027 and 41405025).

Zhao Xiaofeng^†

(color online) The statistical information of a priori refractivity profiles, (a) the refractivity profiles, (b) the first 10 eigenvalue, and (c) the first 4 eigenvector.