source:truck tracking webfleet solutions release time:2023-06-01 Hits: Popular:realtime gps tracker online
The user equipment part is the GPS signal receiver. Its main function is to capture the selected test satellites according to a certain satellite cutoff angle and track their operation. After the receiver captures the tracked satellite signal, it can measure the pseudo distance and the rate of change of distance from the receiving antenna to the satellite, and demodulate data such as satellite orbit parameters. Based on these data, the microprocessor in the receiver can perform positioning calculations according to the positioning solution method, calculating the longitude and latitude, height, speed, time and other information of the user's geographical location. The receiver hardware, onboard software, and GPS data post-processing software package constitute a complete GPS user device. The structure of a GPS receiver is divided into two parts: an antenna unit and a receiving unit. The receiver generally uses two types of DC power sources, internal and external. The purpose of setting up the internal power supply is to continuously observe without interruption when replacing the external power supply. The battery automatically charges when using an external power source. After shutting down, the internal battery supplies power to the RAM memory to prevent data loss. Nowadays, various types of receivers are becoming smaller and lighter in size, making them easy to observe and use in the field.
Note:
A complete GPS car navigator is composed of 10 main parts: chip, antenna, processor, memory, display screen, speaker, buttons, expansion function slot, electronic map, and navigation software.
The number of GPS satellites that the GPS navigator can receive and its path planning ability are key to determining the quality of the GPS navigator. The more effective satellites the navigator can receive, the stronger its current signal and the more stable the navigation operation. If a navigator often fails to search for satellites or frequently interrupts signals during the navigation process, which affects normal navigation work, then its quality is not good, let alone good or bad.
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