介绍了两种差分 G PS定位模型 ,它们是码差分定位和 RTK ( real tim e kinem atic)定位 ,讨论了多径效应对码差分定位和 RTK定位精度的影响。利用 Javad G80采集数据 ,最后通过分析这些数据的统计特性 ,得到的计算结果表明 :影响差分 GP...介绍了两种差分 G PS定位模型 ,它们是码差分定位和 RTK ( real tim e kinem atic)定位 ,讨论了多径效应对码差分定位和 RTK定位精度的影响。利用 Javad G80采集数据 ,最后通过分析这些数据的统计特性 ,得到的计算结果表明 :影响差分 GPS定位系统精度的主要原因是多径效应和接收机噪声。展开更多
Based on coordinates differential modes, using Portable GPS Receiver by near\|real time process, the positioning precision is about ±5 m. It can be used in forest to do many positioning. Position test to be done ...Based on coordinates differential modes, using Portable GPS Receiver by near\|real time process, the positioning precision is about ±5 m. It can be used in forest to do many positioning. Position test to be done under crown measuring more than 4 satellites by synchronous measure, positioning precision is less than ±5 m. When measure time is more than 20 minutes. In addition, why differential\|positioning precision is better has been analyzed.展开更多
文摘介绍了两种差分 G PS定位模型 ,它们是码差分定位和 RTK ( real tim e kinem atic)定位 ,讨论了多径效应对码差分定位和 RTK定位精度的影响。利用 Javad G80采集数据 ,最后通过分析这些数据的统计特性 ,得到的计算结果表明 :影响差分 GPS定位系统精度的主要原因是多径效应和接收机噪声。
文摘Based on coordinates differential modes, using Portable GPS Receiver by near\|real time process, the positioning precision is about ±5 m. It can be used in forest to do many positioning. Position test to be done under crown measuring more than 4 satellites by synchronous measure, positioning precision is less than ±5 m. When measure time is more than 20 minutes. In addition, why differential\|positioning precision is better has been analyzed.