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Smart sentry detecting shadows5/16/2023 ![]() ![]() And stealth aircraft are coated against high frequencies, whereas we operate from 100 MHz upward,” he said. “Our multistatic architecture is a big counter-stealth advantage. It has already been evaluated by the German Office of Defense Technology and Procurement (BWB), and will be available for sale in 2015, said Cassidian.īernhardt is bullish about the system’s ability to detect low-observable aircraft. The system of antennas, a mast, processors and operator displays has been packaged to fit in a commercial van. And, ironically, a PCL system is itself stealthy, because it generates no electronic emissions.Ĭassidian’s first experimental passive radar system in 2008 covered only FM transmissions, but by 2011 the company had extended coverage to digital radio (DAB) and digital terrestrial television (DVB-T) transmissions. It is capable of locating extremely low- and slow-flying objects. Further, PCL offers detection capacity in areas of radar shadow, such as mountainous terrain. By networking multiple PCL receivers, coverage of a wide area can be achieved. PCL is the capture and analysis of the radiation that is reflected from an aircraft as it flies through the fields of various transmitters, such as analog or digital radio broadcasters, television stations and mobile phone stations. “However, we have now integrated the latest capabilities of digital receiver and signal-processing technology to significantly enhance range and detection accuracy by monitoring various emitters at the same time.” Frank Bernhardt, project manager airborne and space radars for Cassidian, added: “I’m very proud of what our engineers have accomplished we don’t know of any other system that has fused emissions from three bands.” “The principle of passive radar has been known for a long time,” said Elmar Compans, head of sensors and electronic warfare at Cassidian. It is a system that also has useful applications in air-traffic control, according to Cassidian. Now EADS Cassidian (Hall 2a, Stand A253) has gone public with a system it calls Passive Radar, which it began developing in 2006. In the late 1990s, Lockheed Martin’s Silent Sentry was the first such complete system to be publicized, and others followed, in both the West and the East. However, counter-stealth technology has also been further developed, including passive coherent location (PCL) techniques. Low-observable technology has moved on, and the F-22, F-35 and the latest UCAVs are stealthier than the F-117. However, that success was due to a combination of poor mission planning, smart air-defense operators exploiting both radar and ELINT sensors, some vulnerability in the first-generation platform–and pure luck. Air Force F-117 during the Kosovo war in 1999, skeptics of stealth claimed vindication. ![]()
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