The Design of the GPS/BDS Dual Micro-track Recorder and the Application in Puclic Information

This paper designs the micro GPS/BDS-track recorder based on global positioning system. It used 1t 8051 cores based on STC15 microcomputer as the main control ship, and used VK25BDMT dual module as the navigated and posited cores. The VK25 module can receive the satellite information and solution to get accurate location, time, speed and other information. And it can send the information to the main control ship STC15 in a specific format message. The main control ship can extract relevant data parsing, and transmit the location to the LCD screen of the analysis of the received message. At the same time, it can write to the file system through the ZNFAT. And the location information will be encoded and saved in SD card in order to record the trail. This recorder has realized a miniature, high-precision and a long time to record the track, and it can provide a simple intelligent operation. The trail-recorder can satisfy the police easy to carry, hide, track, range, positive and massing storage, and it can optimize the track records, the real-time tracking investigation at the police information work.