The unique product of the Czech based company Retia has been successfully used in the armed and security forces of the United States of America. The ReTwis (RETIA Through-Wall Imaging System), which makes it possible to identify the location of living organisms behind a fixed partition, is offered in the United States by CSG USA under the name POLR-1. Among the users of the radar is also the US Army, which acquired it for its special forces. Other markets with significant potential for this small portable radar are Vietnam and other countries from Asia, the Middle East, and Europe. Retia continues to develop this promising technology. ReTwis should acquire the ability to more accurately identify the position of an object, not only through a perpendicular partition but also through the ceiling or floor, which will expand the possibilities of its tactical use.
The ReTwis 5 radar system from the Pardubice-based company Retia, which successfully passed certification within the Federal Communications Commission (FCC) in 2020, found its first customers in the USA very quickly. In the summer of last year, CSG USA, the local branch of the Czech industrial-technological holding Czechoslovak Group, delivered to police units in Phoenix and San Antonio several pieces of ReTwis 5 radars, which are being offered in America under the name POLR-1. Small dimensions, low weight and long operation period makes ReTwis 5 a highly portable device suitable for multi-purpose usage, for special police and military units. In both cities, radars have already been deployed in live actions, helping local police forces to detect and defuse dangerous offenders.
The ReTwis 5 Radar uses the UWB (UltraWideBand) radio localization technology. The UWB technology is specific by its high resolution, high noise immunity and practically no interference with other radio systems. Another benefit is easy penetration of its signal through the walls or other non-metallic barrier. Visual outputs of entities hidden behind the walls are displayed on the basis of processing the pulses reflected from them. A signal from the radar is practically unidentifiable thanks to the SFCW (Step Frequency Continuous Wave) technology. The average transmit power is only 2 mW. Since ReTwis does not transmit most of the time but only receives, the potential human exposure is significantly lower than that of an ordinary mobile phone.
Following the success among the police forces, the federal armed forces and some federal states also opted for radars from the Pardubice-based manufacturer. Overall, the existing contracts for the American market include the delivery of several dozen pieces. The price of one of the latest generation ReTwis sets corresponds to the price of a mid-class car. ReTwis 5, or POLR-1 radars, are arousing active interest not only in the US but also in other parts of the world. Retia’s portable radar system has also caught the attention of the armed and security forces of Vietnam and several countries in Asia, the Middle East, and Europe. In addition to its business success, ReTwis has also earned awards from the professional public. Recently, the radar succeeded in the MoSAIC Challenge 2022 held in Israel, where it placed first in the Human Detection Presence category.