Migration of radar altimeter waveform data

Simulation of Full-waveform Laser Altimeter Echo Waveform

Change of globe surface height is an important factor to study human living environment. The Geoscience Laser Altimeter System (GLAS) on ICESat is the first laser-ranging instrument for continuous global observations of the Earth. In order to have a comprehensive understanding of full-waveform laser altimeter, this study simulated the operating mode of ICESat and modeled different terrains’ (pl...

Sensitivity Analysis of Brown Model Waveform in Radar Altimetry

 In satellite altimetry (radar altimetry), the altimeter emits a pulse, with known power, to the earth surface and receives it back continuously to determine of the sea surface height. The time series of the mean returned power is recorded individually at satellite as the so-called waveform. Analytical model for the waveform is first introduced by Brown, which consists of six parameters: signif...

Innovative Fractal-based Models for Radar Altimeter Data

Sigma0 Blooms in the Envisat Radar Altimeter Data

Data from satellite altimeters are often degraded by the occurrence of unrealistically high values of the ocean surface radar backscatter cross sections (sigma-0). Various studies on Topex and Jason-1 altimeters data have shown that these events called “sigma-0 blooms” affect almost 6% of the over ocean measurements. On Topex data, sigma-0 blooms have been observed and analysed by Mitchum which...

Evolution of the Satellite Radar Altimeter

The radar altimeters flown on Geos-3 (1975), Seasat-l (1978), and Geosat-l (1985) have amply demonstrated the benefits of high-precision measurements of ocean-surface topography, both to geodesy and to oceanography. Two new altimetry missions are planned: the joint NASA/Centre National d'Etudes Spatiales TOPEx/Poseidon mission, to be launched in 1992, and the Navy's Special Purpose Inexpensive ...