GPS Precision Code (P-Code) is a type of signal transmitted by GPS satellites that provides precise location and timing information. It is a higher-precision signal compared to the Coarse/Acquisition (C/A) code, which is available for civilian use. The P-Code is encrypted and reserved for military and other authorized users, providing a more accurate and secure positioning capability.

The P-Code has several key characteristics:

1. Higher precision: The P-Code provides a more precise location and timing information compared to the C/A code, with an accuracy of around 5-10 meters.
2. Encryption: The P-Code is encrypted to prevent unauthorized access and use.
3. Military use: The P-Code is primarily used by the military and other authorized users, such as government agencies and select commercial organizations.
4. Dual-frequency transmission: The P-Code is transmitted on two frequencies: L1 (1575.42 MHz) and L2 (1227.60 MHz), which helps to mitigate ionospheric delays and improve accuracy.

The use of P-Code requires a specialized receiver that is capable of decrypting and processing the signal. This provides a higher level of positioning accuracy and security, making it suitable for applications that require precise location and timing information, such as military operations, precision guided munitions, and other high-stakes activities.