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EngTechno
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I want to know the basic concept of Passive Radar System that can detect Stealth Aircraft? Which country invented this technology ? Is there any website that has information of this technology?
Cliff_J said:I'm have no clue about this but I've seen a documentary on Discovery where they showed the ability to detect stealth aircraft by simply looking from above for moving "holes" in the radar emitted from the ground. The idea is that if the aircraft is designed to diffract and absorb radar energy it will always do it so therefore it will crete this hole as an undesireable secondary effect.
Of course the high altitude aircraft needed or satellites needed to get that vantage point would limit the number of countries with this capability if this is even what you are talking about. Maybe even bounce the transmissions off the upper atmosphere and look for a "hole" in the returning energy? Given how carefully the military plans the route of the aircraft to minimize radar coverage I'd guess they're fully aware of the limitations in the technology or I'm wildly misinformed...
Cliff
A passive radar system is a type of radar technology that utilizes existing signals in the environment, such as radio and television transmissions, to detect and track objects in the sky. It does not emit its own signal, making it difficult to detect and allowing for covert operations.
2.Passive radar works by analyzing the reflections of existing signals from objects in the air. The system receives these signals from both direct and reflected paths, and uses advanced algorithms to determine the location, speed, and trajectory of the object.
3.The concept of passive radar was first proposed by Sir Robert Watson-Watt in 1935, as a means of detecting and tracking enemy aircraft without giving away one's own position. However, the first operational passive radar system was developed by the Soviet Union in the 1960s.
4.Passive radar offers several advantages over traditional active radar systems. It is more difficult to detect, making it useful for covert operations. It also has a lower cost, as it does not require the use of expensive transmitters. Additionally, passive radar is immune to jamming and can operate in densely populated areas without causing interference.
5.Passive radar technology has advanced significantly in recent years, with the development of new algorithms and signal processing techniques. It is currently in use by military and civilian organizations for various applications, including air traffic control, surveillance, and security. However, there are still challenges and limitations to be addressed, such as its sensitivity to environmental conditions and the need for a large network of receivers for optimal performance.