source:truck tracking webfleet solutions release time:2022-09-22 Hits: Popular:realtime gps tracker online
The user part of GPS consists of GPS receiver, data processing software and corresponding user equipment such as computer meteorological instruments. Its function is to receive signals from GPS satellites and use these signals for navigation and positioning. The above three parts together form a complete GPS system.
GPS satellites transmit carrier signals of two frequencies, namely the L1 carrier with a frequency of 1575.42MHz and the L2 carrier with a frequency of 1227.60HMz. Their frequencies are 154 times and 120 times that of the fundamental frequency of 10.23MHz, respectively, and their wavelengths are 19.03cm. and 24.42cm. A variety of signals are modulated on L1 and L2 respectively. These signals mainly include:
C/A code
The C/A code is also called the coarse acquisition code. It is modulated on the L1 carrier and is a 1MHz pseudo-random noise code (PRN code) with a code length of 1023 bits (period of 1ms). Since the C/A codes of each satellite are different, we often use their PRN numbers to distinguish them. The C/A code is a main signal used by ordinary users to determine the distance between the station and the satellite.
P code
The P code, also known as the fine code, is modulated on the L1 and L2 carriers and is a 10MHz pseudo-random noise code with a period of seven days. When implementing AS, the P code and the W code are added modulo-2 to generate a confidential Y code. At this time, the general user cannot use the P code for navigation and positioning.
Read recommendations:
3 Years Disposable Asset GPS Tracker
Composition unit of on-board system
Anti -theft installation and operation introduction of automobile car GPS positioner.gps tracker no
Last article:Brief introduction of GPS control part
Next article:What are the components of GPS
Related Information
car gps tracker supplier
2023-04-23vehicle gps tracker webfleet solutions
2023-03-16personal gps tracker
2023-03-164G GPS Tracker for vehicles
2023-03-16vehicle gps tracker webfleet solutions
2023-04-11GPS Tracking Solution
2023-04-114G GPS Tracker for vehicles distributors
2023-04-23gps tracker with magnet Vendor
2023-03-16simple gps tracking custom
2023-04-23gps tracker for bike
2023-04-11G02M Pet Tracker
2022-06-19GF70L-Solar Magnetic Asset GPS Tracker
2023-10-07TK100 (GT06) Vehicle Tracker
2022-06-203 Years Disposable Asset GPS Tracker
2025-03-31Mini Sized GPS Tracker PCBA
2022-06-17The difference between gps and cellular version
2022-11-03How is GPS positioning?
2023-02-15Features of GPS System
2022-08-05GPS installation steps
2022-10-08GPS application knowledge
2022-08-20What will happen if the card of the car GPS positioner is unplugged?realtime gps tracker online manu
2023-03-28GPS Development.gps tracker for trailer distributors
2023-09-09Introduce the different types of the positioner
2023-03-07Is GPS really powerful?
2023-02-14Enhanced GPS Positioner Dual Camera Controller Interface Description.Car gps tracking
2023-09-23Origin of GPS development
2022-12-29Does the GPS positioner help the battery car anti -theft?vehicle gps tracker webfleet solutions
2023-03-08Application of GPS Earth Powerology.realtime gps tracker online Manufacturing
2023-04-23mini gps tracker.The role of vehicle GPS satellite positioning system in logistics transportation
2023-11-02Principles of GPS System.Cantrack TK100
2023-09-04