METHOD FOR CALCULATING EFFECTIVE VELOCITY FOR PROCESSING SIGNAL OF SATELLITE SAR

摘要

The present invention relates to a method for calculating an effective velocity to process a signal of an image radar for a satellite, capable of very accurately calculating effective velocity with a small calculation rate. According to the present invention, the method for calculating an effective velocity to process a signal of an image radar for a satellite includes: (a) a step of forming a Pythagorean theorem mathematical formula to calculate a range by using the effective velocity; (b) a step of performing partial differentiation on the Pythagorean theorem mathematic formula and changing the Pythagorean theorem mathematic formula to a partial differential formula; (c) a step of individually forming a formula on bearing time ta1 and ta2 by substituting the bearing time ta1 and ta2 to the partial differential formula; (d) a step of forming an effective velocity (V_e) equation by combining two formulas on the ta1 and ta2; (e) a step of calculating R which is a parameter of the effective velocity (V_e) equation; and (f) a step of calculating the effective velocity by substituting the parameter R to the effective velocity (V_e) equation.