③必须能同时接收到GPS卫星的信号和基地站播发的差分信号。星数问题限制

③必须能同时接收到GPS卫星的信号和基地站播发的差分信号。<br><br>星数问题限制了GPS-RTK技术的应用范围。在城镇高楼区、山地林荫区等凡所测星数少于5个时,GPS-RTK测量就会遇到困难。将来,当GLONASS卫星全部组网,投入生产后,困难会少些。<br><br>迁站过程中不能关机,不能失锁。不能关机容易做到,不能失锁则很难。当迁站过程中经过树下、立交桥下、隧道里时,都可能引起失锁。失锁后,必须重新初始化,即重新确定整周模糊值。确定整周模糊值的时间和可靠性,取决于四个因素:单频机或双频机,所测星数,至基站的距离,GPSRTKRTK软件质量。

③必须能同时接收到GPS卫星的信号和基地站播发的差分信号。<br><br>星数问题限制了GPS-RTK技术的应用范围。 在城镇高楼区、山地林荫区等凡所测星数少于5个时,GPS-RTK测量就会遇到困难。 将来,当GLONASS卫星全部组网,投入生产后,困难会少些。<br><br>迁站过程中不能关机,不能失锁。 不能关机容易做到,不能失锁则很难。 当迁站过程中经过树下、立交桥下、隧道里时,都可能引起失锁。 失锁后,必须重新初始化,即重新确定整周模糊值。 确定整周模糊值的时间和可靠性,取决于四个因素:单频机或双频机,所测星数,至基站的距离,GPSRTKRTK软件质量。

③ The GPS satellite signal and the differential signal broadcast by the base station must be able to be received simultaneously.<br>The problem of star number limits the application range of GPS RTK technology. GPS RTK measurement will be difficult when the number of stars measured in high-rise buildings and mountain shade areas is less than 5. In the future, when GLONASS satellite is all networked, it will be less difficult to put into production.<br>During the relocation process, it cannot be shut down or locked. It is easy to do not shut down, and it is difficult to lose lock. When the station is moved under trees, under overpasses and tunnels, it may cause lock loss. After the lock is lost, it must be reinitialized, that is, the whole week fuzzy value must be determined again. The time and reliability of the whole week fuzzy value are determined by four factors: single frequency machine or dual frequency machine, number of stars measured, distance from base station, and software quality of gpsrtkrtk.<br>