The invention provides a
system and method for correcting on-
orbit error of a heat mirror dorsal valve of a
satellite-borne
microwave imager. The method comprises the following steps: S1, a heat mirror relevant parameter module provides parameters for a heat mirror dorsal valve orientation position acquisition module, an earth
radiation quantity acquisition module and a heat mirror dorsal valve error acquisition module; S2, the heat mirror dorsal valve orientation position acquisition module acquires the orientation position of the heat mirror dorsal valve according to the parameter, and transmits the position to the earth
radiation quantity acquisition module ; S3e , the earth
radiation quantity acquisition module acquires the earth radiation quantity corresponding to the orientation position of the heat mirror dorsal valve according to the parameter and the position, and sends the earth radiation quantity to the heat mirror dorsal valve error acquisition module; and S4, the heat mirror dorsal valve error acquisition module acquires the heat mirror dorsal valve error according to the parameter and the earth radiation quantity. By adoption of the method provided by the invention, the on-
orbit error of the heat mirror dorsal valve of the
satellite-borne
microwave imager can be acquired effectively and precisely; and moreover, the method is scientific and reasonable, and is easyto realize.