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P901 is the thinnest smart walkie-talkie with real time GPS tracking function.It can be used in any place with GSM signal regardless distance limitation.We've already tested one key push-to-talk N...

The main product for testing GPS receivers is a set of RF vector signal generators that can simulate GPS signals. In this application description, the reader will know how to use NI PXI-5671 and N...

Because the LNA in series can provide a 60 dB gain, users can greatly increase the power of the front end of the vector signal analyzer. In our measurement operation, a gain of 60 dB is sufficient...

Since many receivers can use appropriate software to enable users to present information such as longitude and latitude, it is necessary to conduct automatic measurement in a more standardized way...

1. Good reception sensitivity Receiving sensitivity is the minimum signal receiving power that the receiver can correctly take out useful signals. The good reception sensitivity of GPS navigation...

Due to the GPS_ The GPRS positioning system involves the application of GPS satellite positioning technology and GPRS general packet radio service. Therefore, in the composition of the system, GPS...

The Global Positioning System (GPS) is a space based radio navigation system originally developed by the US Air Force. Although GPS was originally developed for use as a military positioning syste...

If the general differential GPS technology is used, each vehicle shall receive the differential correction number, which will cause the system to be too complex, so the centralized differential te...

Automobile is the most closely related means of transportation to everyone in modern civilized society. According to statistics, only a few developed countries have tens of millions of automobiles...

The vehicle GPS positioning management system is mainly used for the vehicle GPS autonomous positioning, combined with the wireless communication system for vehicle scheduling management and track...