He then used GPS tracking technology similar to an in-car sat-nav to follow its progress.
而后，他使用类似于车内卫星导航的GPS跟踪技术跟踪整个拍摄过程。
Now, GPS devices are far more common - and people carry around their own self-tracking technology in their cell phones.
现在GPS装置已经相当普遍了，人们将这种自我追踪技术安装到他们的手机了。
Proponents of the technology say GPS tracking is analogous to the low-tech police tactic of trailing a suspect's vehicle.
技术派认为，GPS与警察用来跟踪嫌疑人的其他技术含量较低的手段差不多。
Secondly, according to the needs of UAV location tracking, the paper analyzes the advantages and weakness of mechanical, magnetic sensing, GPS, ultrasonic, inertia and optics tracking technology.
其次，根据无人机定位跟踪的需要，分析比较了机械式跟踪技术、磁传感跟踪技术、GPS跟踪技术、超声波跟踪技术、惯性跟踪技术和光学跟踪技术的优缺点。
GPS technology based on tracking station model is introduced for classical method of set up the GPS net.
目前我国已布测的GPS网均是采用经典布测方法建立的。
GPS technology based on tracking station model is introduced for classical method of set up the GPS net.
目前我国已布测的GPS网均是采用经典布测方法建立的。
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