truck tracking webfleet solutions

Home > NEWS > Other information > truck tracking webfleet solutions

Company News

Industry News

GPS predecessor

source:truck tracking webfleet solutions release time:2023-06-01 Hits:     Popular:realtime gps tracker online

  

  The predecessor of the GPS system was a transit satellite positioning system developed by the US military, which was developed in 1958 and officially put into use in 64. The system operates on a satellite network consisting of 5 to 6 satellites, bypassing the Earth up to 13 times a day, and cannot provide altitude information, resulting in unsatisfactory positioning accuracy. However, the meridian system has enabled the research and development department to gain preliminary experience in satellite positioning and verified the feasibility of using satellite systems for positioning, laying the foundation for the development of GPS systems. Due to the enormous superiority of satellite positioning in navigation and the significant shortcomings of the meridian system in navigation for submarines and ships. The US military, land and air force, as well as the civilian sector, feel an urgent need for a new satellite navigation system.

  To this end, the US Navy Research Laboratory (NRL) proposed a global positioning network plan called Tinnation, which consists of 12 to 18 satellites at an altitude of 10000 kilometers. In 67, 69, and 74, one experimental satellite was launched, and the atomic clock timing system was initially tested on these satellites, which is the foundation of precise positioning of the GPS system. The US Air Force, on the other hand, proposed a plan for 621-B to consist of 3 to 4 star clusters consisting of 4 to 5 satellites per cluster. Except for one of these satellites using a synchronous orbit, all other satellites use a tilted orbit with a period of 24 hours. This plan uses pseudorandom code (PRN) as the basis for transmitting satellite ranging signals, and its powerful function can detect signals when the signal density is less than 1% of environmental noise. The successful application of pseudo random codes is an important foundation for the success of GPS systems. The Navy's plan is mainly used to provide low dynamic 2D positioning for ships, while the Air Force's plan can provide high dynamic services, but the system is too complex. Due to the significant cost involved in developing two systems simultaneously and the fact that both programs were designed to provide global positioning, the US Department of Defense merged the two into one in 1973, led by the Joint Satellite Navigation and Positioning Program (JPO) led by the Department of Defense. The agency was also established at the Air Force Space Service in Los Angeles. The organization has a large number of members, including representatives from the US Army, Navy, Marine Corps, Department of Transportation, Defense Mapping Agency, NATO, and Australia.


Read recommendations:

GPS Tracking Manufacturing

4G GPS Tracker Factory

Mini Sized GPS Tracker PCBA

Civil GPS

In addition to seeing if the GPS is accurate, please also pay attention to the GPS radiation

Last article:Handheld GPS navigation products will enter a period of rapid development.pet gps tracker cat wholes

Next article:GPS space and ground control

Related Information

4G GPS Tracker for vehicles

2023-03-16

personal gps tracker distributors

2023-04-11

Magnetic gps tracker Vendor

2023-04-23

gps tracker online wholesaler

2023-04-23

personal gps tracker wholesaler

2023-03-16

car gps tracker Solution

2023-04-23

4G GPS Tracker Factory

2023-04-23

car gps tracker

2023-04-11

Car gps tracking

2023-04-11

cat gps tracker wholesaler

2023-04-23

P60L Personal gps tracker

2022-06-21

NB20 -4G Bluetooth Smart Pet Tracker

2022-06-21

TK100 (GT06) Vehicle Tracker

2022-06-20

G05N Vehicle Tracker

2022-06-21

G500M-Mini GPS Tracker

2022-06-20

GPS positioning mode

2022-10-22

GPS device.obd2 gps tracker verizon manufacturer

2023-05-20

GPS, more and more closely connected with our life.realtime gps tracker online company

2023-04-18

What is the difference between vehicle GPS positioning system and vehicle management system?GPS Trac

2023-03-28

Simple introduction of GPS control part.obd2 gps tracker verizon wholesale

2023-05-11

GPS measurement system

2022-11-08

GPS Global Positioner.fleet gps tracking wholesaler

2023-05-27

Two Point Application of GPS.obd2 gps tracker verizon manufacturer

2023-08-01

GPS mobile phone positioning principle

2022-10-21

GPS smart bus stop sign

2022-09-05

The Application of Vehicle GPS in Enterprise Vehicle Management.gps tracker device wholesaler

2023-06-25

Internationally leading GPS navigator.gps tracker with magnet manufacturer

2023-08-26

Intelligent GPS anti-theft electronic system

2022-08-26

gps vehicle tracker.Accurate and inaccurate vehicle mileage statistics by GPS/Beidou satellite posit

2023-10-18

Bluetooth GPS related issues.plug & play Obd gps tracker Processing

2023-08-04