HENSOLDT's Passive Radar in NATO Measurement Campaign

Excellent detection performance without detectable emissions

Munich, 29 October 2019 – The passive radar "TwInvis" of sensor solution provider HENSOLDT showed outstanding detection performance during a measurement campaign of the NATO Science and Technology Organization under the leadership of the Polish armed forces.

For this purpose, a passive radar sensor cluster with two sensors was installed on the Polish Baltic coast. During the measurement campaign, a system integrated in a container was used alongside a system variant integrated in a van. TwInvis reliably detected a large number of targets in the air and at sea, ranging from light aircraft and combat aircraft to ballistic and ground-to-air missiles. The achieved ranges over the Baltic Sea coast were up to 300km. The live data from the TwInvis cluster were fed into the Polish MilRad network and analysed and evaluated in a nearby Polish CRC.

A passive radar acts purely as a receiver, i.e. it does not transmit itself, and locates aircraft by evaluating the signals reflected at the target from existing external transmitters. The TwInvis is creating a comprehensive air situation picture, which is generated from the simultaneous evaluation of a large number of frequency ranges. TwInvis is able to simultaneously evaluate up to 16 FM transmitters (analogue radio) and 5 frequencies with several contributing transmitters from DAB and DAB+ (digital radio) as well as DVB-T and DVB-T2 (digital terrestrial television) due to its highly developed digital receiver technology and special algorithms.

In civil applications, passive radar enables low-cost control of air traffic without additional emissions and without using scarce transmission frequencies. In military applications, the system enables covert surveillance of large areas using networked receivers and offers the advantage that the "passive radar" cannot be located by the enemy and is very difficult to be jammed.


HENSOLDT is a pioneer of technology and innovation in the area of defence and security electronics. The company, headquartered in Taufkirchen near Munich, is one of the market leaders in civilian and military sensor solutions, developing new products to counter a wide variety of threats based on innovative concepts in such fields as big data, robotics and cybersecurity. With a workforce of some 4,400 employees, HENSOLDT generated revenues of more than €1 billion in 2018.


Press contact
Lothar Belz
Tel.: +49 (0)731.392.3681

Change your language

More News

Sensor company HENSOLDT supports ‘Schwaben-Tech-Park‘

Telefunken collection handed over to newly founded Association for the History of Technology

HENSOLDT UK presents a new generation of its Integrated Navigation System

At Europort in Rotterdam, HENSOLDT UK presents Manta NEO, the next-generation of its Kelvin Hughes Integrated Navigation System (INS), designed for…

HENSOLDT opens new headquarters in Taufkirchen

Thomas Müller opens the new company headquarters in Taufkirchen in the presence of the Bavarian Minister President