C/A code

C/A code, or Coarse/Aquisition code, is a unique sequence of numbers and letters used in GPS (Global Positioning System) signals. It helps GPS receivers identify and track satellite signals effectively. Each GPS satellite transmits its own specific C/A code, allowing receivers to distinguish between signals from different satellites. This process is crucial for determining precise locations on Earth, as the receiver calculates its position by measuring the time it takes for signals from multiple satellites to reach it. Essentially, the C/A code ensures accurate and reliable location data for navigation and various applications.