时变海面反射L波段信号时频特征的定性分析
Qualitative Analysis of the Time-Frequency Signature Induced by a Reflected L-Band Signal from Time Evolving Sea Surfaces
摘要：
被动式遥感技术已越来越普遍地用于探测和定性目的。使用全球导航卫星系统的优点是发射的信号众所周知，并且在地球上的大多数地区都可以使用。在本文件中，L波段信号（包括全球导航卫星系统信号）被视为用于海洋学目的。在这方面的贡献的主要兴趣是使用时频变换的不断变化的海面反射的信号的分析。发生在这一领域的功能检查有关的物理现象：相互作用的电磁波与移动的海面。
英文摘要：
Passive remote sensing techniques have become more and more popular for detection and characterization purposes. The advantage of using the Global Navigation Satellite Systems (GNSS) are the well known signals emitted and the availability in most areas on Earth. In the present paper, L-Band signals (including GNSS signals) are considered for oceanographic purposes. The main interest in this contribution is the analysis of the signal reflected by an evolving sea surface using time-frequency transforms. The features which occur in this domain are examined in relation to the physical phenomena: interaction of the electromagnetic waves with the moving sea surface.
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