便携式GNSS基带记录仪的设计与实现

2009 2nd IEEE International Conference on Computer Science and Information Technology Pub Date : 2009-09-11 DOI:10.1109/ICCSIT.2009.5234778

Sheng Wang, Pei Chen, Chao Han

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引用次数: 0

摘要

介绍了一种便携式GNSS基带记录系统的设计与实现，该系统可以记录原始GPS L1基带超过1小时的时间。此外，设计涵盖了GPS (L1, L2)/GLONASS/Galileo/Compass频率，最大采样频率约为50MHz。该系统基于Blackfin DSP，采用CompactFlash卡存储。通过读取CompactFlash卡来提取数据以数据文件的形式存储。利用FFT对记录的数据文件进行分析，获取GPS卫星信号，利用开源GPS定位软件计算位置。该系统采用CF+DSP设计，便于携带，也可用于导弹和卫星。为GNSS软件接收机提供了一个良好的研发平台。

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Design and implementation of portable GNSS baseband logger

The design and the implementation of a portable GNSS baseband logging system which can log raw GPS L1 baseband more than one hour or longer is presented. In addition, the design covers GPS (L1, L2)/GLONASS/Galileo/Compass frequency and the maximal sample frequency is about 50MHz.The system is based on Blackfin DSP and uses CompactFlash card for storage. The data is extracted by reading the CompactFlash card to store as a data file. The recorded data file is analyzed by using the FFT to acquire the GPS satellites signals and the position is calculated by using the open source GPS positioning software. The system is very portable because of the CF+DSP design and can also be used on missile and satellite. It provides a good research and development platform for the GNSS software receiver.

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2009 2nd IEEE International Conference on Computer Science and Information Technology

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