An instantaneous-frequency filtering technique for high-frequency radar oceanography

被引：5
|
作者：
Middleditch, A. [1 ]
Wyatt, L. R. [1 ]
机构：
[1] Univ Sheffield, Dept Math Appl, Sheffield Ctr Earth Observat Sci, Sheffield S3 7RH, S Yorkshire, England
来源：
IEEE JOURNAL OF OCEANIC ENGINEERING | 2006年 / 31卷 / 04期
关键词：
high-frequency (HF) radar; instantaneous frequency (IF); ocean wave measurement; surface current;
D O I：
10.1109/JOE.2006.886083
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
High-frequency (HF) radar systems are remote sensing tools that can be used to measure oceanographic parameters. Problems can occur when using the conventional periodogram (PG) method for computing power spectral estimates from backscattered radar signals. Temporal and spatial inhomogeneities within the radar measurement region can cause distortion in the spectra. This paper describes an instantaneous-frequency (IF) filtering technique that has been developed to measure the first-order modulation contained within the radar signal. Successful removal of this modulation is shown to yield an increased quality and quantity of ocean measurements.
引用
收藏
页码：797 / 803
页数：7
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