Ocean wind analysis based on GPS reflected signal

Pao Yue-kong Library Electronic Theses Database

Ocean wind analysis based on GPS reflected signal

 

Author: Yang, Li
Title: Ocean wind analysis based on GPS reflected signal
Degree: M.Sc.
Year: 2015
Subject: Ocean surface.
Wind velocity.
Global Positioning System.
Hong Kong Polytechnic University -- Dissertations
Department: Faculty of Construction and Environment
Pages: viii, 51 pages : color illustrations
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2831595
URI: http://theses.lib.polyu.edu.hk/handle/200/8347
Abstract: Global Positioning System(GPS) refelctions is a new technique used in remote sensing applications.Ocean reflection experiment performed in Shen Zhen Xi Chong Astronomical observatory, China equipping with a GNSS-R receiver. Three-day data were collected continuously and rest of the data collected for the dispersion time from November7th to November 11th. Data capture is mainly completed by GPS/BD four-channel GNSS-R IF acquisition developed by Beihang University which can simultaneously capture four GNSS signal with intermediate frequency of 3.996MHz, sample frequency of 16.369 MHz. This dissertation introduces the application in sea surface wind speed montior. The software receiver and algorithms used for Delay Waveforms and Delay-Doppler map genaration and the Delay Waveforms and Delay-Doppler Map selection approches are prensented. The preliminary results of sea surface refelction analysis are also described. Delay of refelcted signal with respect to direct signal is a significant basic for sea level caculation. The refelcted signal correlation power is employed to give qualitative analysis to sea surface wind speed.

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