Research on Secondary MTF Improvement Based on Near-shore Wave Image Spectrum
YU Weiwei
CHEN Wei
LU Zhizhong
ZHANG Runbo
Abstract：There is a difference between the image spectrum obtained by X-band navigation radar scanning sea level and the real wave spectrum obtained by buoy,which needs to be corrected by modulation transfer function(MTF).In this paper,a quadrat-ic polynomial MTF is derived by using the measured data of buoys and HH polarized X-band navigation radar collected near the coast of Pingtan and fitting the modulation transfer function coefficients by the least square method.The radar data are processed by quadratic polynomial MTF and classical linear MTF respectively,and the root mean square error between the retrieved wave parame-ters and the real values is compared.The results verify the effectiveness of the new quadratic MTF.
Keywords：modulation transfer functionX-band navigation radarbuoywave parameters
Publication Date：2025-05-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 93-96 )