What are the characteristics differencing the various SAR systems?
The most important differences between radar satellites are the angle with which the microwaves are emitted (ESA-ERS satellites have a look angle of 23, Canadas Radarsat has a varying look angle, from 10 to 60, Japans JERS has a look angle of 35, Envisat has a look angle of 14 up to 45), the wavelength of emission (C band for ERS and Envisat, L band for JERS, C band for Radarsat) and the time elapsed between a passage of the satellite and the following over the same area (35 days for ERS, 44 days for JERS, 24 days for Radarsat but the adjustable antenna can cover the same area approximately every 3 days).
