1L119 / 1L13 / P-18M Nebo-SVU - BOX SPRING

In the meter range, the Nizhny Novgorod Research Institute of Radio Engineering has developed a number of unique radars, many of which are world champions. These include ground-based two-coordinate radar on-duty 1L119 (cipher "Sky-SVU"). The chief designer of a prototype radar 1L119 was IG Krylov, who was once awarded the USSR State Prize for his scientific contribution to the development of domestic radar. Under his leadership, a mobile radar 1L13 (code “Sky-SV”) of a one-meter wave band was created earlier, designed to provide radar information for the Air Defense of the Ground Forces (Air Defense).

In the creation of the 1L119 radar, each of the NIIIRT specialists employed at different stages of design, testing, and subsequently - during serial production, has invested a part of his soul. The main ideas, which were then reflected in the appearance of the radar, were born in the “brain” center - the group of the chief designer; at the development stage, it included outstanding personalities: State Prize Winners Kanengiser V.S. B. I., Kovrovsky V. N., Lozhkarev V. V., Polezhaev V. N., Pronchatova L. A., Ryabov E. A., Smirnov E. A., Khakhin E. I.

Radar "Sky-SVU" is designed for use in the air defense forces and provides:

• automatic detection, measurement of coordinates and tracking of a wide class of modern air objects, including ballistic and inconspicuous targets, made by STEALTH technology;
• determination of the nationality of air facilities;
• direction finding for active noise jammers;
• recognition of classes of targets when working as part of modern air defense command and control systems, as well as in non-automated systems.

Features of the constructive construction of the radar:

• active phased array antenna with analog-digital conversion of signals in each row of the array;
• digital space-time signal processing;
• flexible adaptation of the signal processing system to the jamming environment and the technical condition of the station;
• high-performance digital DCS, providing stable wiring of air objects in conditions of hydrometeorological formations and intentional passive interference;
• adaptive side-lobe suppression of the antenna pattern.

The use of meter-band radiation in radar virtually eliminates its defeat by existing and prospective anti-radar missiles.

The station is equipped with a remote indicator post (VIP) in a KK6.2 container on an off-road Ural-532361 vehicle or in a separate container (boxes), as well as additional property to pair the radar with the air defense systems of the customer and ZIP-G for carrying out aggregate repair. method.

Antenna system (AS) radar consists of antennas of the location, compensation and OGP, united by a single spatial frame, located on the turntable. The transmitting device of the radar is made on the basis of broadband (for the whole range of the radar) transistor power amplifiers located on the antenna array fabric near each radiating element.

The radar receiving devices used broadband radio frequency amplifiers made according to modern technology and located directly on the antenna in each receiving module combined with the transmitting module into a single constructive - receiving-transmitting module (MRP). Depending on the task, phase shifters connected to the MRF automatically change the shape of the antenna pattern to transmit and receive in an elevation plane from a narrow barrier beam with a maximum energy concentration in the region of low elevation angles to a wide-angle diagram.

Carlo Kopp noted in 2010 that the newer NNIIRT-designed 1L119 Nebo SVU and Nebo M RLM–M radars are self-propelled and designed from the outset to support SAM batteries in the field. The earlier Nebo SVU is a modern AESA design carried by semitrailer and capable of stowing and deploying in 20 minutes, significantly less time than observed with legacy Soviet air defense radars. The 84-element folding AESA combines mechanical steering in azimuth and tilt, like a conventional radar, and provides electronic beam steering. This is used during conventional circular sweeps to provide highly accurate angle measurement, with errors claimed by NNIIRT to be similar to the S-band 64N6E Big Bird series phased array used for SA–20 target acquisition. In sector search mode, the Nebo SVU is mechanically rotated to point at the threat sector, and then performs agile electronic beam steering through a claimed ~50° arc, not unlike the Patriot’s MPQ–53 phased array radar. The primary cited application for the Nebo SVU is target acquisition for SAM batteries.

Characteristics of the radar 1L13-3 before and after the upgrade

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