GPS satellites broadcast radio frequency signals at two carrier frequencies; L1 (1575.42 MHz) and L2 (1227.60 MHz). The beams that can be used by the general public are encoded using C/A (rough/ac
Home > News > Other information > truck tracking webfleet solutions > Gps speed limiter.GPS signal
source:truck tracking webfleet solutions release time:2023-11-14 Hits: Popular:realtime gps tracker online
GPS satellites broadcast radio frequency signals at two carrier frequencies; L1 (1575.42 MHz) and L2 (1227.60 MHz). The beams that can be used by the general public are encoded using C/A (rough/acquisition) codes, while beams used solely by the US military are encoded using P (precise) codes.
The C/A code includes the identification codes and navigation messages of each satellite. The L1 signal from the GPS satellite is phase modulated using C/A code. C/A code is a digital signal in which 0 and 1 are encoded by 1023 consecutive digital pulse patterns. The navigation message consists of 25 frames, each with 5 subframes of 300 bits. Therefore, each frame has 1500 bits (0 and 1). The data length of each bit is 20 milliseconds (i.e., the total pulse width of a C/A signal of one bit is 20 milliseconds).
The orbital data of each satellite is called an ephemeris. This data is used to generate the precise position of the satellite, which is required for the GPS receiver to calculate position information. The orbital data of all satellites is called the almanac. It includes rough orbit and status information of all satellites in the network. This data is used to locate available satellites for the GPS receiver so that it can find their current time and position on Earth.
Read recommendations:
G900LS 8 Lines-4G Car GPS Tracker
Last article：mini gps tracker.Introduction to the main functions of enterprise users choosing car GPS satellite p
Next article：mini gps tracker.GPS positioning
Related Information
gps vehicle tracker price
2023-04-23gps vehicle tracker Vendor
2023-04-11mini gps tracker manufacturer
2023-04-23mini gps tracker Vendor
2023-04-234G GPS Tracker manufacture
2023-04-23portable gps tracker Vendor
2023-04-234G GPS Tracker for vehicles company
2023-04-23fleet gps trackers custom
2023-04-23Car gps tracking price
2023-04-11simple gps tracking wholesaler
2023-04-23P60L Personal gps tracker
2022-06-21G900LM J16-4G Car GPS Tracker
2026-10-29P901 4G ID Card GPS Tracker Smart Walkie-talkie
2026-10-29GF70L-Solar Magnetic Asset GPS Tracker
2026-10-293 Years Disposable Asset GPS Tracker
2026-10-29GPS system function
2022-08-05Micro Tracking Locator
2022-09-21Car GPS Navigation System
2022-11-04What do you think the gps tracker does?
2022-09-13What are the functions of breeding solar GPS positioning
2023-02-23GPS positioning principle
2022-10-14How to implement the GPS monitoring system function?
2023-02-11The difference between gps and cellular version
2022-11-03Factors affecting GPS positioning accuracy.gps tracker for trailer Production
2023-05-18Dual GPS frequency positioning, improve accuracy.Portable car gps systems distributors
2023-03-11What is GPS
2022-12-02Domestic product function
2022-11-01The GPS navigation function is diverse. Let's take a closer look at the GPS navigation voice prompt
2023-04-14GPS management system-efficient management of your vehicle
2023-02-16What are the basic functions of vehicle gps locator?plug & play Obd gps tracker
2023-03-23Related Articles
The Best GPS Tracker Depends on Your Vehicle Tracking GoalThe best vehicle GPS tracker depends on what you want to achieve, such as anti-theft protection, real-time location monitoring, fleet manageme...
What Is the Best GPS Tracker for Car Anti-Theft and Real-Time Tracking?The best GPS tracker for car anti-theft depends on your vehicle security objectives. A proper solution should deliver reliable po...
Choosing the Right GPS Tracker Starts With Your Asset EnvironmentA suitable GPS tracker for trailers and outdoor assets depends on power availability, deployment duration, tracking frequency and envir...
Cantrack Technology serves over 11,000 overseas customers, shipping millions of trackers annually, and keeping more than 3 million devices online worldwide. As competition grew, Cantrack evolved it...
A Reliable Fleet Tracking Solution Is More Than a GPS DeviceFleet operators are rarely asking only whether a GPS tracker can show vehicle location. They need reliable monitoring, unauthorized-use aler...
alger.qin@6gpstracker.com
Phone: +86 198 7412 0903
Tel: +86 755 2370 2092
WhatsApp: +86 198 7412 0903
Add: FL5, BLDG B, Lianxing Industrial Park, JiangJun Rd, Qiuchang, HuiYang District, Huizhou, Guangdong, China
Copyright © Huizhou Cantrack Technology Co., Ltd. All Rights Reserved. Sitemap “仲达荣”商标为惠州市仲达荣科技有限公司所有
Product
About
Support
News
Contact Us
Language
EN