Side looking airborne radar

side-looking airborne radarside-looking radarSLARside-lookingsideways looking radar
Side-looking airborne radar (SLAR) is an aircraft- or satellite-mounted imaging radar pointing perpendicular to the direction of flight (hence side-looking).wikipedia
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Synthetic-aperture radar

synthetic aperture radarSARsynthetic aperture
SLAR can be fitted with a standard antenna (real aperture radar) or an antenna using synthetic aperture.
SAR is typically mounted on a moving platform, such as an aircraft or spacecraft, and has its origins in an advanced form of side looking airborne radar (SLAR).

Imaging radar

radar imagingradar imageryimaging
Side-looking airborne radar (SLAR) is an aircraft- or satellite-mounted imaging radar pointing perpendicular to the direction of flight (hence side-looking). A squinted (nonperpendicular) mode is possible also.
Side looking airborne radar

Squint (antenna)

squintbeam squintsquinted
Side-looking airborne radar (SLAR) is an aircraft- or satellite-mounted imaging radar pointing perpendicular to the direction of flight (hence side-looking). A squinted (nonperpendicular) mode is possible also.


downImum Coelinadir pointing
The radar “looks” with the looking angle θ (or so called off-nadir angle).

Pulse compression

pulse compression radarchirp radarintra-pulse modulation
This limitation can be overcome using intra-pulse modulation.


Another intended combat role was to provide high-altitude, high-speed stand-off, side-looking radar and photographic imagery and signals intelligence, aerial reconnaissance.

Lockheed Martin F-22 Raptor

F-22 RaptorF-22F-22A Raptor
Side-looking radars were deleted, and the dedicated infra-red search and track (IRST) system was downgraded from multi-color to single color and then deleted as well.

Grumman OV-1 Mohawk

Grumman OV-1D MohawkOV-1OV-1 Mohawk
The Side-Looking Airborne Radar (SLAR) could look through foliage and map terrain, presenting the observer with a film image of the earth below only minutes after the area was scanned.

Lockheed SR-71 Blackbird

SR-71SR-71 BlackbirdLockheed SR-71A Blackbird
Reconnaissance equipment included signals intelligence sensors, a side-looking airborne radar, and a photo camera.

Embraer EMB 314 Super Tucano

A-29 Super TucanoSuper TucanoA-29
A Colombian general disclosed that the side-looking airborne radar will be able to locate ground targets smaller than a car with digital precision.

List of McDonnell Douglas F-4 Phantom II variants

Tactical reconnaissance version of F-4B for United States Marine Corps, nose stretched 4 ft 9 in (1.4 m), smaller AN/APQ-99 radar. Three camera bays typically carried KS-87 forward oblique/vertical camera on Station 1, KA-87 low-altitude camera on Station 2, and KA-55A or KA-91 high-altitude panoramic camera on Station 3. Also carried AN/APQ-102 reconnaissance SLAR, AN/AAD-4 infrared reconnaissance system, and ALQ-126 ECM suite. The KS-72 or KS-85 cameras were on rotating mounts and could be aimed in flight which improved upon the earlier RF-4C which could only be aligned on the ground. In 1975, modernized under Project SURE (Sensor Update and Refurbishment Effort); 46 built. Retired in 1990. 4 lost in Vietnam. First flown 12 March 1965.

North American A-5 Vigilante

RA-5C VigilanteA-5 VigilanteNorth American RA-5C Vigilante
This added an APD-7 side-looking airborne radar (SLAR), AAS-21 infrared line scanner, and camera packs, as well as improved ECM.


1L222 Avtobaza
Kvant 1L222 Avtobaza is an ELINT system designed to detect Side looking airborne radars, air-to-ground fire-control radars and low-altitude flight control radars, as well as to provide intelligence data for the 1L125M APUR.

Mil Mi-6

Mi-6Mi-6 HookMil Mi-6 'Hooks
Mi-6AYa:(NATO – Hook-D) OKB designation for the Mi-6VzPU and Mi-22 airborne command posts, with SLAR.


terrain contour matchingterrain contour matching (TERCOM)terrain mapping
The availability of compact fast computers and high-capacity storage, combined with the availability of global digital elevation maps, has mitigated this problem, as TERCOM data is no longer limited to small patches, and the availability of side-looking radar allows much larger areas of landscape contour data to be acquired for comparison with the stored contour data.

Radar configurations and types

search radarsearchtarget acquisition radar
Side looking airborne radar (SLAR)

Tupolev Tu-204

Tu-204Tu-214Tupolev Tu-204-100
Two video cameras, a Raduga infrared thermographic camera and Ronsard Side looking airborne radar are also fitted.

Tupolev Tu-22

Tu-22Tu-105Tu-22 ''Blinder
Some Tu-22Rs were fitted with the Kub ELINT system, and later with an under-fuselage pallet for M-202 Shompol side looking airborne radar, as well as cameras and an infrared line-scanner.

McDonnell Douglas Phantom in UK service

McDonnell Douglas PhantomMcDonnell Douglas Phantom FGR.2F-4 Phantom
The aircraft assigned to the two tactical reconnaissance units were fitted with a pod containing four optical cameras, an infrared linescan and a sideways looking radar.

Northrop Grumman E-8 Joint STARS

The most prominent external feature is the 40 ft (12 m) canoe-shaped radome under the forward fuselage that houses the 24 ft (7.3 m) APY-7 passive electronically scanned array Side looking airborne radar antenna.


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Side looking airborne radar (SLAR) made it possible to acquire images regardless of weather conditions.

Boeing B-47 Stratojet

B-47B-47 StratojetBoeing B-47E Stratojet
The final 15 RB-47s, built beginning in December 1955, were fitted with additional equipment, including the AN/APD "side looking airborne radar" (SLAR) system, and gear to sample the air for fallout from nuclear tests.

OPS 3762

Its side looking airborne radar produced images, which were returned in a KH-4 film capsule at the end of the mission.

Vickers Valiant

ValiantVickers Valiant BK.1Type 660
Provisions for additional equipment and sensors, such as side looking airborne radar, were also made.

Tupolev Tu-22M

Tu-22M3Tu-22MTupolev Tu-22M3
Several Tu-22M3s, perhaps 12, were converted to Tu-22M3(R) or Tu-22MR standard with Shompol side looking airborne radar and other ELINT equipment.