基于SoC的星载微型GNSS接收机设计

Design of miniature spaceborne GNSS receiver based on SoC

针对皮纳型卫星对星载GNSS接收机小型化、低功耗以及低成本的要求,提出采用片上系统(SoC)技术完成星载微型GNSS接收机的设计。在该设计中,基带信号的捕获、跟踪与定位解算等全部在SoC内完成,具有集成度高与系统灵活性高等优势。将设计的原理样机与国外几款星载微型GNSS接收机性能参数进行对比,结果表明,该星载微型GNSS接收机原理样机重约45 g,尺寸100×60×10 mm,功耗约3 W,兼容处理GPS L1/L2、BDS B1/B2信号能力,可完成双模单频、单模双频、双模双频等多种模式的灵活配置,综合性能要优于现有的几款星载微型GNSS接收机。

To satisfy the requirements of miniaturization high performance, low power consumption and low cost for spaceborne GNSS receiver of pico-satellite and nano-satellite, the system design of the miniature spaceborne GNSS receiver is implement- ed based on SoC（System on Chip） technology. In the system design, the acquisition and tracking of base-band signal and posi- tioning resolve are all completed in the SoC, which increases the integration level and flexibility. Compared with several minia- ture spaceborne GNSS receivers abroad, the prototype weighs about 45g; the size of the prototype is 100×60×10mm; the power consumption is about 3W. It has the capability to process the GPS L1/L2, BDS B1/B2 signal and can be configured to dual- mode single-frequency, dual-frequency single-mode, dual-mode dual-frequency. The overall performance of the receiver is superior to other receivers.