In modern defense and surveillance systems, radar technology plays an essential role in detecting, tracking, and monitoring objects across different environments. Among emerging detection technologies, Passive Radar is gaining attention for its ability to identify moving targets without transmitting its own radio signals. Unlike conventional radar systems, which actively emit electromagnetic waves and analyze their reflections, passive radar uses existing signals from sources such as television broadcasts, radio transmissions, and cellular networks. The fundamental working principle of Passive Radar involves receiving signals transmitted by external sources and analyzing how these signals interact with surrounding objects. When an aircraft, vehicle, or other moving target reflects these signals, the radar receiver detects variations in the reflected waves. By comparing direct signals with reflected signals, the system can estimate the target's location, movement, and speed. This approach eliminates the need for a dedicated radar transmitter. One of the major characteristics of this technology is its low probability of detection. Since passive radar does not actively transmit signals, it is more difficult for adversaries to identify its operational presence through conventional electronic surveillance methods. This makes it relevant for military surveillance, airspace monitoring, border security, and maritime observation. The technology also presents certain operational challenges. Its performance depends on the availability and quality of external signal sources, receiver sensitivity, signal processing capabilities, and surrounding environmental conditions. Complex terrain, interference, and changing transmission patterns can influence detection accuracy. As defense organizations increasingly explore advanced surveillance capabilities, Passive Radar represents an alternative approach to conventional radar infrastructure. Its ability to utilize existing electromagnetic signals highlights the growing importance of innovative, energy-efficient, and less detectable technologies in modern situational awareness and security operations. https://www.marketresearchfuture.com/reports/passive-radar-market-36776