|Country of origin||Soviet Union|
|Type||Early-warning radar ground control.|
|Frequency||E band/F band|
|Range||350 km (217 mi)|
|Altitude||25,000 m (82,021 ft)|
|Precision||500 m (1,640 ft) range;|
|Power||6 x 1 MW|
|Other Names||Bar Lock|
The P-35 (Russian : "Сатурн"; English: Saturn ) also referred to by the NATO reporting name "Bar Lock" in the west is a 2D E band/F band radar developed and operated by the former Soviet Union.
The P-30 was developed by the All-Union Scientific Research Institute of Radio Engineering (VNIIRT)as an early warning ground control and interception radar for the Soviet Air Defence Forces, airforce, and navy of the Soviet Union. Saturn was a development of an earlier radar design, the P-30 radar with which it shares many similarities. By 1958 the radar had completed state trials and was accepted into service, offering improved detection range and reliability than the previous P-30.
In 1961 an improved variant of the P-35 was developed, the P-35M,which featured an improved antenna layout. By 1971 a new variant of the P-35 had entered service, "sword-35". The sword-35 upgrade featured faster scanning and an improved antenna layout and polarization filters to help eliminate passive interference and improve detection of targets flying below 300 meters. Sword-35 also incorporated a limited capability to modulate pulse duration and frequency to counter active jamming. The P-35 has now been succeeded by its successor, the P-37 radar.
The P-35 is a semi-mobile radar composed of a trailer mounting the control cabin and antenna equipment, equipment being transported by truck. The antenna system of the P-35 is composed of two open frame truncated parabolic antenna accomplishing both transmission and reception, with both antenna fed by a stacked beam composed of six feed horns. The radar uses two antenna with azimuth scanned mechanically, but unlike the previous P-30 both antenna are horizontal, the radar not using the V-beam system to determine target altitude. The right hand side of the upper antenna carried the antenna array of the IFF secondary radar, which was used to identify detected aircraft as friend or foe.
The P-35 was operated by the Soviet Union from 1958 and though they have since become obsolete, they were passed down to successor states after the fall of the Soviet Union. The radar has been exported and continues to serve in some areas around the world.
Radar is a detection system that uses radio waves to determine the distance (range), angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna and a receiver and processor to determine properties of the object(s). Radio waves from the transmitter reflect off the object and return to the receiver, giving information about the object's location and speed.
Pirinçlik Air Base, also known as Pirinçlik Air Station, formerly Diyarbakır Air Station, was a 41-year-old American-Turkish military base near Diyarbakir, Turkey. It was known as NATO's frontier post for monitoring the former Soviet Union and the Middle East, completely closed on 30 September 1997.
The Zhuk are a family of Russian all-weather multimode airborne radars developed by NIIR Phazotron for multi-role combat aircraft such as the MiG-29 and the Su-27. The PESA versions were also known as the Sokol.
The Bars (Leopard) is a family of Russian all-weather multimode airborne radars developed by the Tikhomirov Scientific Research Institute of Instrument Design for multi-role combat aircraft such as the Su-27 and the MiG-29.
The Russian BRLS-8B "Zaslon" (Barrier) is an all-weather multimode airborne radar developed between 1975 and 1980 by the Tikhomirov Scientific Research Institute of Instrument Design as part of the weapons control system of the MiG-31 supersonic interceptor. The NATO reporting name for the radar is Flash Dance with the designations "SBI-16", "RP-31", "N007" and "S-800" also being associated with the radar.
The "Pegmantit 3" or P-3 was an early VHF radar developed and operated by the former Soviet Union.
The "Pegmantit 8" or P-8 was an early 2D VHF radar developed and operated by the former Soviet Union.
The "Pegmantit 10" or P-10 was an early 2D VHF radar developed and operated by the former Soviet Union.
The P-12 "Yenisei" was an early VHF developed and operated by the former Soviet Union.
The P-18 or 1RL131Terek is a 2D VHF radar developed and operated by the former Soviet Union.
The P-14 is a 2D VHF radar that was developed and operated by the Soviet Union.
The P-40"Armour" or 1S12 is a 3-D UHF radar developed and operated by the former Soviet Union.
The P-15"Tropa" or 1RL13 is a 2D UHF radar developed and operated by the former Soviet Union.
The P-70 or "Lena-M" was a static 2D VHF radar developed and operated by the former Soviet Union.
The P-19"Danube"1RL134 is a 2D UHF radar developed and operated by the former Soviet Union. The radar was also known by the name "Renata" in Poland and "Dunai" in the former German Democratic Republic.
The P-30"Khrustal" also referred to by the NATO reporting name "Big Mesh" in the west is a 2D E band/F band radar developed and operated by the former Soviet Union.
The P-20"Periskop" also referred to by the NATO reporting name "Bar Lock" in the west is a 2D E band/F band radar developed and operated by the former Soviet Union.
Irbis-E is a Russian multi-mode, hybrid passive electronically scanned array radar system developed by Tikhomirov NIIP for the Su-35 multi-purpose fighter aircraft. NIIP developed the Irbis-E radar from the N011M Bars radar system used on Sukoi SU-30MKI aircraft.
The Wasserman radar was an early-warning radar built by Germany during World War II. The radar was a development of FuMG 80 Freya and was operated during World War II for long range detection. It was developed under the direction of Theodor Schultes, beginning in 1942. Wasserman was based on largely unchanged Freya electronics, but used an entirely new antenna array in order to improve range, height-finding and bearing precision.
Dnestr radar and Dnepr radar, both known by the NATO reporting name Hen House are the first generation of Soviet space surveillance and early warning radars. Six radars of this type were built around the periphery of the Soviet Union starting in the 1960s to provide ballistic missile warnings for attacks from different directions. They were the primary Soviet early warning radars for much of the later Cold War. In common with other Soviet and Russian early warning radars they are named after rivers, the Dnestr and the Dnepr.