When the current GPS voice navigation products are undergoing drive tests, when the speed exceeds 40 kilometers at the time, the signal reception will more or less "drift". In this regard, some people in the industry think it is normal, because the current GPS positioning accuracy is only 5 to 20 meters in a static state, which makes drifting during driving. It is more obvious when the speed is faster, and the time, location, climate, etc. Affect GPS positioning accuracy. But the main reason lies in the processing power of the hardware (especially the processing speed of the CPU and GPS algorithm) and the convenience of the navigation software. In this regard, the industry pointed out that before solving this problem, it is necessary to distinguish between software and hardware problems.
When the weather is fine, the GPS output signal detected when the car is driving at high speed is compared with the data when the car is stopped, and the actual data of "drift" can be obtained. In terms of problem solving, the accuracy of the hidden gps tracking device is basically unavoidable under the existing conditions. The processing speed of the hardware has been basically solved, but the running speed of the software is far from enough; as for the accuracy and detail of the map, it is basically Meet the needs of use, but it is not enough and needs to be further improved. It is also pointed out that since this problem is mainly caused by the Doppler effect, a highly dynamic GPS receiver must be used on high-speed moving objects.
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