Title :
Planetary delay-Doppler radar and the long-code method
Author_Institution :
Nat. Astron. & Ionosphere Center, Arecibo Obs., Puerto Rico
fDate :
9/1/2002 12:00:00 AM
Abstract :
Delay-Doppler mapping continues to be the most widely used imaging technique in radar astronomy. Various methods have been devised to partition echoes in delay-Doppler space for different degrees of echo dispersion (as quantified by the overspreading factor F). These include the standard interpulse/intercode methods for underspread (F < 1) or slightly overspread (F > 1) echoes, intrapulse methods for grossly overspread echoes, and the long-code method for the intermediate case of moderate overspreading. Here the standard and long-code methods are compared, treating various aspects of experiment design, data analysis, and calibration. Previous and future applications of the long-code method are also reviewed.
Keywords :
Doppler radar; planetary surfaces; radioastronomical techniques; delay-Doppler mapping; echo dispersion; long-code method; planetary delay-Doppler radar; radar astronomy; slightly overspread echoes; standard interpulse/intercode methods; underspread echoes; Astronomy; Calibration; Data analysis; Image resolution; Propagation delay; Pulse compression methods; Radar antennas; Radar imaging; Radar polarimetry; Telescopes;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
DOI :
10.1109/TGRS.2002.803731