GPS is a global navigation satellite system that provides location and time information to GPS receivers anywhere on Earth. It consists of three segments - the space segment with 24 satellites orbiting Earth, the control segment of ground stations that monitor the satellites, and the user segment of GPS receivers used by individuals. GPS works by precisely measuring the travel time of signals from multiple satellites to triangulate the receiver's position. It provides accurate positioning 24/7 globally and has many applications including navigation, mapping, and tracking.

1. GPS

10. Pseudoranging

11. S 1 (x 1 ,y 1 ,z 1 ) S 2 (x 2 ,y 2 ,z 2 ) S 3 (x 3 ,y 3 ,z 3 ) S 4 (x 4 ,y 4 ,z 4 ) GPS Receiver  1 =  {(x 1 -x) 2 +(y 1 -y) 2 +(z 1 -z) 2 } + c. Δ t  2 =  {(x 2 -x) 2 +(y 2 -y) 2 +(z 2 -z) 2 } + c. Δ t  3 =  {(x 3 -x) 2 +(y 3 -y) 2 +(z 3 -z) 2 } + c. Δ t  4 =  {(x 4 -x) 2 +(y 4 -y) 2 +(z 4 -z) 2 } + c. Δ t Principle of GPS Positioning (X,Y,Z)

13. USER It includes all GPS users. User can receive the GPS signals through antenna connected to the receiver and can determine its position on the surface of the earth

15. Some Applications of GPS

16. Some Applications of GPS

17. Some Applications of GPS

18. Some Applications of GPS

26. GPS is getting popular as a means for collection of data