多模卫星导航星载终端仿真平台设计

Design of Multimode Satellite Navigation Space borne Terminal Simulation Platform

摘要:

高分辨率卫星的大成像幅宽、多成像模式、多时空协调、全天候、全天时对地观测需求对卫星高精度高稳定度姿态控制技术、高精度卫星定轨技术提出了极高的要求。为确保卫星定轨精度指标达到设计要求,并提高对卫星定轨技术的分析能力,提出了搭建多模式精密定轨半物理仿真验证系统,在地面用卫星导航星载终端仿真平台模拟各种星载导航设备。提前开展仿真验证工作,减少星载导航设备在轨飞行风险,提高可靠性。提出一种多模卫星导航定轨星载终端仿真平台的设计方法,整机设计包括导航板、接口板。实测表明,该仿真平台重约1.5kg,尺寸220mm×140mm×70mm,功耗约20W,兼容处理GPS L1/L2、BD2 B1/B2/B3等信号,模拟星载导航设备在高动态条件下定位、定轨、授时的性能,提供精密定轨所需要数据,为星载导航设备精密定轨仿真验证提供了新的思路。

Abstract:

The large imaging width, multi-imaging mode, multi-time and space coordination,all-weather and all-day requirements of earth observation satellite, which proposed a very high claim of high-precision, high-stability attitude control technology, high-precision orbit determination technology. In order to ensure that the satellite orbit determination accuracy meet the design requirements and improve the ability of satellite orbit analysis technology, proposed to build multi-mode Precision orbit semi-physical simulation verification system. Which used on the ground to simulate varies space borne navigation equipment to reduce risk of space borne navigation equipment and improve reliability. This article propose a design method of multi-mode Precision orbit semi-physical simulation verification system. The platform includes a navigation board and an interface board. The simulation platform weighs about 1.5kg, size 220mmx140mmx70mm, power consumption of about 20W, compatible with GPS L1/L2, BD B1/B2/B3. This platform simulate space borne navigation equipment’s performance of orbit determination, positioning, and timing, provides data for high-precision orbit determination. This article provides a new way of simulation and verification for space borne navigation equipment.