Cooperative passive coherent localization (CPCL) is a radar technology that leverages cooperative transmitters, such as FM radio, television broadcast stations, or mobile phone base stations, to locate and track objects of interest. Unlike traditional radar systems that rely on actively transmitted radar pulses, CPCL uses signals transmitted from external sources. These signals are received by multiple distributed receivers, and using sophisticated signal processing techniques, the CPCL system determines the position, speed, and sometimes even the identity of targets within its coverage area.
Using cooperative transmitters, CPCL provides cost-effective surveillance capabilities and can operate without emitting detectable radar signals, making it suitable for applications where stealth and low observability are critical considerations.
Passive coherent location (PCL) technology involves detecting and tracking targets using signals emitted by non-cooperative sources, such as commercial broadcast and communications signals (e.g., FM radio, television broadcasts, cellular signals).
PCL systems consist of multiple geographically dispersed receivers that detect these signals as they reflect off objects in the environment. By analyzing differences in the arrival times and phases of signals received across receivers, PCL systems can triangulate target positions through a process called multilateration. This technique allows PCL systems to provide surveillance and tracking capabilities without emitting active radar signals, making them particularly suitable for covert operations, border surveillance and surveillance of airspace or airspace domains.
the maritime.
Multistatic passive coherent tracking (MPCL) using multilateral techniques refers to a sophisticated approach where multiple receivers collaborate to locate and track targets using signals from non-cooperative transmitters. In MPCL systems, receivers are strategically distributed over a wide area, each detecting reflections of ambient electromagnetic signals from airborne or surface targets. By precisely synchronizing the arrival of these signals at each receiver and applying advanced multilateral algorithms, MPCL systems can accurately calculate target positions and velocities.
This multistatic configuration improves coverage and improves tracking accuracy compared to monometic PCL systems. MPCL technology finds applications in military surveillance, border security and civil airspace surveillance, providing robust situational awareness capabilities while minimizing detection risk associated with active radar emissions