基于COTS SoC的星载微型GNSS接收机硬件设计

GaoWanli ZhaoYi LiuLei WangKang GuJian

摘要:

卫星平台的小型化使小卫星、纳卫星及皮卫星等微小卫星成为研究热点。针对微小卫星对星载导航接收机小型化、低功耗、低成本等要求,提出一种基于COTS (Commercial off-the-shelf)组件和SoC技术构建星载微型导航接收机的硬件设计方法。该设计包括射频模块,基带处理模块、时钟模块和电源管理模块。实测表明,该导航接收机原理样机重约45g,尺寸100mm×60mm,功耗约3W,兼容处理GPS L1/L2、BD2 B1/B2信号,可完成双模、双频、双模双频等多种模式的配置,符合微小卫星对导航接收机提出的技术要求,为微小卫星等空间飞行器的卫星导航提供了新的思路。

Abstract:

Satellite platforms miniaturization enables pico-satellite, nano-satellite and other micro-satellites become a hot topic. To resolve the new problems caused by miniaturization, low power and low cost in spaceborne navigation receiver on micro-satellites, hardware design of spaceborne miniature navigation receiver based on COTS and SoC is proposed. The design includes RF module, baseband processing module, clock module and power management module. Results show that: the prototype weighs about 45g; size is 100mm×60mm; power consumption is about 3W. It has the capability to process GPS L1/L2, BD2 B1/B2 signal and can be configured to dual-mode, dual-frequency, dual-mode and dual-frequency. The miniature spaceborne navigation receiver satisfies the technical demands of mirco-satellite. It can provide new methods and thoughts for mirco-satellite navigation.