A Comprehensive Optimization Error Analysis Method for Error Analysis of On-Orbit Complex Geometry Measurement System

With the development of space science and technology, the need for high precision and large-scale geometric measurement of spacecraft in orbit is becoming more urgent, which can be denoted as on-orbit measurement. Generally, an on-orbit measurement system is complex, which has many parameters and factors that affect the measurement precision. The error distribution or allocation process impacts the product quality, the production cost and scrap rate. Tight error tolerances allow to assure product performance; loose error tolerances reduce production costs. The tolerance allocation of a complex system is performed under uncertainty. Traditional error analysis and allocation methods are difficult to balance between scientific rationality and realizability. In this paper, we propose a comprehensive optimization error analysis and distribution method. The theoretical error transfer model between each parameter and the geometric quantity to be measured is established by exploiting the error transfer coefficient. The analysis and evaluation of the measurement system are finally realized by combining the distribution law of the errors of each parameter obtained by the experiments.