A cooperation earth observation model of SAR satellite and optical remote sensing satellite

A cooperation earth observation model constituted by two SAR satellites and one optical remote sensing satellite is proposed. In this model, the optical remote sensing satellite orbit plane locates in the middle of two SAR satellites, and two SAR satellites observe the same ground area from two sides of the optical satellite respectively. However, because of the influence of earth curvature, not only orbits of three satellites must meet certain conditions to realize the cooperation goal that is to observing the same ground area simultaneously, but also SAR view-angle must be adjusted with optical satellite movement in its orbit. So here the cooperation model of two SAR satellites and one optical remote sensing satellite is discusses and the explicit expressions of simultaneous observable conditions are deduced. Then, the calculation method of SAR view-angles is presented. At last, computer simulation results are employed to confirm the mathematical analysis.