GPS允许持有对应设备的用户来确定精确的时间、速度、经纬度以及海拔,而误差只有几米。
The Global Positioning System enables properly equipped users to determine precise time and velocity and worldwide latitude, longitude and altitude to within a few meters.
这种方案的特点起,从不同的途径来进行初始对准,系统本皇可以输出航向、纬度和水平信息,同时,航向和纬度信息都不存在随时间而积累的误差。
The system is characterized by its initial alignment through a different approach. It is capable of sending out information on course, latitude and horizon on its own.
第四章研究了地面目标经纬度的计算问题,推导出通用化计算公式,初步分析了其计算误差,为实现双星无源定位系统对辐射源目标的快速准确定位提供了可靠保障。
Chapter 4 is contributed to the calculation problem of longitude and latitude about surface target. The general calculation formula is given out and its calculation error is analyzed briefly.
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