A Precision Alignment Strategy Based on Reference Cube Network During GF-2 Assembly

Abstract

During the processof GF-2 satellite assembling and testing, some equipment often needs to be disassembled and assembled repeatedly due to malfunction. After each re-installation, the measurement environment is not exactly the same, such as whether there is other equipment on the deck, which will affect the installation accuracy. Therefore, a precise measurement strategy based on reference cube network is designed during the GF-2 satellite assembly process. Each cube coordinate system of the equipment on the satellite is defined as a network node, then the reference cubes in the same measuring environment are connected into a network. Then a few hypothetical simplification conditions are introduced to link the network in different measurement environments to obtain the influence of measurement environments on the installation attitude of the equipment on the satellite, and to obtain a coordinated high-precision system for the installation attitude of the equipment, thus ensuring the on-orbit accuracy of the equipment.