[1] WINGHAM D J, GILES K A, GALIN N, et al.A semianalytical model of the synthetic aperture, interferometric radar altimeter mean echo, and echo cross-product and its statistical fluctuations[J].IEEE Transactions on Geoscience & Remote Sensing, 2018, 56(5):2539-2553.
[6] BROWN G.The average impulse response of a rough surface and its applications[J].IEEE Transactions on Antennas & Propagation, 1977, 2(1):67-74.