An experimental system and method for dynamic tracking of movable beam antenna pointing of spacecraft

Abstract

The invention discloses a testing system and method for directed dynamic tracking of a spacecraft mobile beam antenna. A target direction is regarded as an invariant, a spacecraft is about to be in superposed posture motion, and antenna motion is motion of an antenna tracking target output by a real spacecraft dynamics computer, so that the target direction becomes a fixed direction in a testing site, and pointing of the antenna mounted on a three-axis turntable is maintained in the target direction when the three-axis turntable rotates. Therefore, the system does not need an outside site or a compact site and is low in requirements on the site, high in testing accuracy and testing efficiency. The three-axis turntable is driven by data generated by the spacecraft dynamics computer, and antenna pointing is driven by data generated by measured corner of the three-axis turntable, which is consistent with an algorithm that the spacecraft adopts measured posture angle to calculate antenna pointing, so that verification of directed dynamic tracking is real, and the requirements on the site can be lowered.

Description

Technical field [0001] The invention belongs to the technical field of antennas and microwaves, and relates to aerospace vehicle antenna technology, in particular to a test system and method for dynamic tracking of a spacecraft movable beam antenna. Background technique [0002] Spacecraft movable beam antennas (hereinafter referred to as antennas) are generally used to keep track of the target. Due to the change of the spacecraft's own attitude and the relative movement of the spacecraft and the target, the apparent motion trajectory of the target is complicated, and the algorithm and control of the antenna pointing , The realization of the function of antenna pointing to keep track of the target requires system simulation verification under dynamic conditions. [0003] Carrying out such simulation verification, there are mainly two problems: one is the simulation of the apparent motion of the target, and the other is the indication of the antenna pointing error. The usual method...

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Problems solved by technology

[0004] In order to solve the problem that the existing pointing dynamic tracking test of the spacecraft movable beam antenna depends on the radio frequency test, the present invention proposes a test system and method for the pointing dynamic tracking of the spacecraft movable beam antenna, which does not require external field or tight field conditions. It has low requirements on the site, and has the advantages of high test accuracy and high test efficiency.

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