| 4种DGPS模块动态定位精度测试与分析 |
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| 引用本文： | 张智刚,罗锡文,胡炼,吴晓鹏.4种DGPS模块动态定位精度测试与分析[J].华南农业大学学报,2010,31(1). |
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| 作者姓名： | 张智刚 罗锡文 胡炼 吴晓鹏 |
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| 作者单位： | 南方农业机械与装备关键技术省部共建教育部重点实验室,华南农业大学,工程学院,广东,广州,510642 |
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| 基金项目： | 863计划重大项目，863计划专题项目，广东省科技计划项目，广东省自然科学基金 |
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| 摘 要： | 采用RTK-DGPS为参照,对GARMIN GPS15L、Ublox LEA-4S、Gstar GS-87和Gstar GS-89m-J共4种DGPS模块在单机模式、地面伪距差分模式和卫星差分模式下的动态定位精度进行了测试和分析.结果表明:(1)对于GARMIN GPS15L和Ublox LEA-4S,单机定位精度为米级,使用地面伪距差分定位可分别提高动态定位精度20%和87%;(2)总体上看,DGPS模块的地面伪距差分定位精度优于卫星差分定位,卫星差分定位精度优于单机定位;(3)在视野狭窄地段,无论单机定位、伪距差分定位还是卫星差分定位,动态定位精度都受到一定影响,和视野开阔地段相比,精度明显下降.
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| 关 键 词： | 伪距 动态定位 测试 |
Study on Dynamic Positioning Precision of 4 Kinds DGPS Modules |
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| ZHANG Zhi-gang,LUO Xi-wen,HU Lian,WU Xiao-peng.Study on Dynamic Positioning Precision of 4 Kinds DGPS Modules[J].Journal of South China Agricultural University,2010,31(1). |
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| Authors: | ZHANG Zhi-gang LUO Xi-wen HU Lian WU Xiao-peng |
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| Abstract: | RTK-DGPS was used as the reference to evaluate the dynamic positioning precision of GARMIN GPS15L,Ublox LEA-4S,Gstar GS-87 and Gstar GS-89m-J GPS modules.The test conclusion included:(1) The absolute positioning precisions of GARMIN GPS15L and Ublox LEA-4S were meter level,using pseudo range differential correction,the positioning precision could be improved by 20% and 87%,respectively;(2) The ground pseudo range differential positioning precision was better than MSAS satellite differential positioning,MSAS satellite differential positioning precision was better than single module positioning;(3) The dynamic positioning precision would be effected remarkably by environment condition. |
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| Keywords: | GPS GPS pseudo range dynamic positioning test |
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