南海海域BD2与GPS定位精度比对

Comparison of positioning accuracy of GPS and BD2 in the South China Sea

试验中利用一套定位精度相对较高的GPS设备和一套市场上适用,低功耗、低成本北斗设备,分析GPS和BD2定位差值。所选试验区域包含了南海北部海域和南海东部海域。在这两个区域,当GPS与BD2定位精度较高时,二者定位差值在3m左右。在南海东部海域,BD2出现定位精度不好的情况且时间较长,但定位差值在25m以内。故间接可以说明北斗导航系统能够满足船舶航行以及一些海上仪器设备定位需要。

The economic benefits of the BD2 are growing. It analysis the positioning difference of GPS and BD2 by using a higher positioning accuracy of GPS receiver and a set of BD2 equipment which has low power consumption and low cost. The test includes the north and the east of the south China sea. In the test zone, when positioning accuracy of GPS and BD2 is higher,the positioning difference of GPS and BD2 is about 3 meters. In the east of the south China sea, BD2 has been bad in a long time, but the positioning difference of GPS and BD2 is less than 25 meters. So we can get a conclusion that BD2 can meet the needs of the navigation of ships and position of some Marine equipment.