Method for accurately guiding sublevel return stage of carrier rocket based on ballistic forming
A carrier rocket and sub-stage technology, applied in the direction of guidance, weapon accessories, offensive equipment, etc., can solve the problems of large terminal ballistic inclination angle and difficult realization
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[0097] A precise guidance method for the sub-stage return stage of a launch vehicle based on virtual proportional guidance, such as figure 1 with figure 2 As shown, the method includes the following steps:
[0098] Step 1: Obtain the real-time position and real-time velocity of the sub-stage of the launch vehicle in the inertial system based on the rocket-borne navigation system including GPS / INS and other devices;
[0099] Step 2: Based on the landing point position and landing speed of the desired target, obtain the sub-stage of the launch vehicle-target longitudinal line-of-sight angle and lateral line-of-sight angle and the sub-stage of the launch vehicle-the component of the angular velocity of the target line-of-sight under the ground system;
[0100] Step 3: Based on the coordinate transformation matrix from the ground system to the ballistic system, obtain the sub-stage of the launch vehicle——the component of the target line-of-sight angular velocity in the ballistic...
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