Title :
Results of a bistatic HF radar surface wave sea scatter experiment
Author :
Trizna, D. ; Gordon, Josh
Author_Institution :
Imaging Sci. Res. Inc., Burke, VA, USA
Abstract :
We describe a set of HF radar sea scatter experiments that test a new digital receiver in both monostatic and bistatic modes. The University of Miami´s OSCR HF radar system was used as a transmitter signal source, and sea echoes were received with both receive systems using different receive antenna arrays. Independent GPS time-coupled rubidium clocks were used to maintain site-pair coherence, and Bragg spectral purity was used as a measure. Expected first order Bragg line characteristics are first discussed that are based on a model (Trizna, 2000): predicted Bragg line NRCS and Doppler shift. With a monostatic transmitter and receive array and a single bistatic transmitter, two different aspects onto the same ocean surface area allows one to estimate current vectors.
Keywords :
oceanographic techniques; radar cross-sections; radar theory; remote sensing by radar; HF radar; OSCR HF radar; University of Miami; bistatic radar; coast; current; dynamics; first order Bragg line characteristics; measurement technique; ocean; ocean wave; radar remote sensing; radar scattering; surface wave sea scatter experiment; Antenna arrays; Global Positioning System; Hafnium; Radar antennas; Radar scattering; Receiving antennas; Sea surface; Surface waves; Testing; Transmitters;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2002. IGARSS '02. 2002 IEEE International
Print_ISBN :
0-7803-7536-X
DOI :
10.1109/IGARSS.2002.1026294