基于计算树的航天遥测参数仿真

Telemetry Parameters Simulation of Spacecraft Based on Computation Tree

航天测控仿真软件在每一次航天测控任务中都需要处理大量测控数据,不同参数的计算方法差别很大,在以往的应用中将计算方法以程序代码的形式固定在软件中,使得仿真系统难以进一步提高其可维护性和软件复用度。通过研究以配置文件的形式描述测控参数的计算方法,给出了参数计算灵活配置的设计方案,介绍了参数计算方法原理,软件模块、数据结构和处理算法。在该框架下,数据处理算法与软件代码相分离,使软件开发和具体航天型号任务之间的耦合度降低,增强了软件的可复用性,软件的稳定性也得到了有效保障。利用该方法对遥测参数进行了实验,验证了方法的有效性。

Simulation system of spacecrafts＇ Telemetry and Command （TT＆C） needs to simulate lots of telemetry parameters in every missions, whose computing algorithms are different. In the past applications, these algorithms are fixed as codes in software programs, so it is very difficult to improve the maintainability and reuse of the simulation system. By studying the computing methods of telemetry parameters described in configuration files, a design scheme was given in which the algorithms of parameters were flexibly configured, and the principle of methods were described specially in computing parameters, software models, data structure and algorithms. In this framework, the algorithms dealing with data were separated from codes in software so that coupling degree was decreased between development of software and space missions, the reusability was enhanced, and the stability was protected effectively. In the experiment, telemetry parameters were computed by this methods, and the results show that this method is very effective.