Low Probability Radio Intercept (LPI) refers to a type of communications system designed to transmit signals in a manner that reduces the probability of detection by adversaries. These systems use techniques such as propagation spectrum modulation, frequency hopping, and low transmit power to minimize the detectability of transmitted signals.
LPI radios are commonly used in military applications where operational security and stealth are essential, allowing communication between military units without easily revealing their positions or activities to enemy electronic warfare systems.
Low probability of intercept signals generally refers to any type of electromagnetic signals – such as radar, sonar, or communications signals – that are designed to minimize their detectability by adversary sensors or interceptors.
These signals use various techniques to reduce their emission characteristics, making them more difficult to accurately detect, identify, or intercept. IPL signals are essential in military operations where maintaining operational security and preventing detection by enemy forces is crucial to mission success and personnel safety.
An LPI signal refers specifically to an electromagnetic signal – communications or communications signals – that uses techniques to achieve a low probability of interception.
This includes using techniques such as frequency agility, low power transmission and waveform modulation to reduce the likelihood of the signal being detected or intercepted by enemy sensors or electronic warfare systems. IPL signals are characterized by their ability to operate stealthily, minimizing the risk of detection and ensuring that military operations can proceed without alerting adversaries to the presence or activities of friendly forces