The AN/APY-10 is an American

multifunction An MFP (multi-function product/printer/peripheral), multi-functional, all-in-one (AIO), or multi-function device (MFD), is an office machine which incorporates the functionality of multiple devices in one, so as to have a smaller footprint in a ...

radar Radar is a detection system that uses radio waves to determine the distance ('' ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, we ...

developed for the U.S. Navy's Boeing P-8 Poseidon

maritime patrol {{Unreferenced, date=March 2008 Maritime patrol is the task of monitoring areas of water. Generally conducted by military and law enforcement agencies, maritime patrol is usually aimed at identifying human activities. Maritime patrol refers to ac ...

and surveillance aircraft. AN/APY-10 is the latest descendant of a radar family originally developed by

Texas Instruments Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globa ...

, and now

Raytheon Raytheon Technologies Corporation is an American multinational aerospace and defense conglomerate headquartered in Arlington, Virginia. It is one of the largest aerospace and defense manufacturers in the world by revenue and market capitali ...

after it acquired the radar business of TI, for

Lockheed P-3 Orion The Lockheed P-3 Orion is a four-engined, turboprop anti-submarine and maritime surveillance aircraft developed for the United States Navy and introduced in the 1960s. Lockheed based it on the L-188 Electra commercial airliner. The radar is optimized for

maritime Maritime may refer to: Geography * Maritime Alps, a mountain range in the southwestern part of the Alps * Maritime Region, a region in Togo * Maritime Southeast Asia * The Maritimes, the Canadian provinces of Nova Scotia, New Brunswick, and Prin ...

littoral The littoral zone or nearshore is the part of a sea, lake, or river that is close to the shore. In coastal ecology, the littoral zone includes the intertidal zone extending from the high water mark (which is rarely inundated), to coastal a ...

and overland surveillance. The AN/APY-10 is able to provide

high resolution Image resolution is the detail an image holds. The term applies to digital images, film images, and other types of images. "Higher resolution" means more image detail. Image resolution can be measured in various ways. Resolution quantifies how ...

radar images in both overland and water modes. Available modes include color weather,

synthetic aperture radar Synthetic-aperture radar (SAR) is a form of radar that is used to create two-dimensional images or three-dimensional reconstructions of objects, such as landscapes. SAR uses the motion of the radar antenna over a target region to provide fine ...

(SAR),

inverse synthetic aperture radar Inverse synthetic-aperture radar (ISAR) is a radar technique using radar imaging to generate a two-dimensional high resolution image of a target. It is analogous to conventional SAR, except that ISAR technology uses the movement of the target rath ...

(ISAR),

periscope A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer's current position. In its simplest form, it consists of an outer case with ...

detection, and

navigation Navigation is a field of study that focuses on the process of monitoring and controlling the movement of a craft or vehicle from one place to another.Bowditch, 2003:799. The field of navigation includes four general categories: land navigation, ...

. ISAR mode is said to be capable of both detecting, imaging and classifying surface targets at long range using a variety of resolutions.

AN/APS-80

The AN/APS-80 is the first member of the radar family the AN/APY-10 directly descends from, and this first member of the family was installed on P-3A/B. AN/APS-80 is an analog radar with a peak power of 143 kW. The original AN/APS-80 produced a single 2.6 x 3.4 degree beam, but later version, AN/APS-80A produces two beams: a 3.6 degree pencil beam and an 18 degree fan beam. A unique feature pioneered by AN/APS-80 is that it adopts two antennas to provide 360 degrees coverage, with one antenna in the nose, the other in the tail, under the

magnetic anomaly detector A magnetic anomaly detector (MAD) is an instrument used to detect minute variations in the Earth's magnetic field. The term refers specifically to magnetometers used by military forces to detect submarines (a mass of ferromagnetic material c ...

(MAD). The size of the antenna is 42 inches for AN/APS-80, 42 x 24 inches for AN/APS-80A, and the gain is 34 dB for AN/APS-80 and 35 dB for AN/APS-80A. Each antenna can cover a 210-degree sector, and the scan rate for AN/APS-80 is either 6 or 12 revolution per minute (rpm), covering the scan sector of 36 or 72 degrees per second. For AN/APS-80A, the scan rate is 6 rpm at 45 degrees per second or 48 scans per minute.

AN/APS-88

AN/APS-88 is a light weight derivative of earlier AN/APS-80 with more compact size for smaller aircraft such as Grumman S-2 Tracker. The peak power is 45 kW and like AN/APS-80, AN/APS-88 is also an X-band radar.

AN/APS-115

AN/APS-115 is a development of AN/APS-80A, and it is the first attempt of digitization by providing digital input into the digital combat system installed on the P-3. Other improvement over the original AN/APS-80 included the integration of two separate AN/APS-80A radar into a single unit via a single planar position indicator (PPI) display. The most important improvement is that AN/APS-115 is an automatic version of earlier AN/APS-80/80A, but some users felt that in the hands of an experienced operator, the manual analog AN/APS-80/80A has a better chance to detect small targets such as submarine periscope in sea clutter. AN/APS-115 utilizes

cavity magnetron The cavity magnetron is a high-power vacuum tube used in early radar systems and currently in microwave ovens and linear particle accelerators. It generates microwaves using the interaction of a stream of electrons with a magnetic field whi ...

AN/APS-116

X-band AN/APS-116 is the upgrade AN/APS-88 using technologies and experience gained in the success of AN/APS-115. The biggest difference between AN/APS-115 and AN/APS-116 is that while the former has two antennas like AN/APS-80, the latter only has a single antenna in the nose of the platform like AN/APS-88 it replaced. AN/APS-115 is able to achieve a resolution of 1.5 ft and the typical range against a submarine periscope is 15.5 nautical miles (nm).

AN/APS-124

Knowledge gained in the development of AN/APS-115/116 is used in the development of X-band AN/APS-124, the first model in the radar family developed for ASW helicopters. Due to the adoption of the

traveling wave tube A traveling-wave tube (TWT, pronounced "twit") or traveling-wave tube amplifier (TWTA, pronounced "tweeta") is a specialized vacuum tube that is used in electronics to amplify radio frequency (RF) signals in the microwave range. The TWT belongs t ...

(TWT), the peak power is significantly increased to 350 kW. Due to the size and weight constraint, the parabolic antenna of radars for fixed aircraft is replaced by a 183 x 30.5 cm (72 inch x 12 inch) slotted planar array antenna for AN/APS-124, and scan rate is 6 or 12 rpm, with 120 rpm for weather. The array of AN/APS-124 produces a 1.2 x 20 degrees beam, and the typical range against a 1 square meter target is 16 nm in comparison to 20 nm of AN/APS-115/116. AN/APS-124 is installed on

Sikorsky SH-60 Seahawk The Sikorsky SH-60/MH-60 Seahawk (or Sea Hawk) is a twin turboshaft engine, multi-mission United States Navy helicopter based on the United States Army UH-60 Black Hawk and a member of the Sikorsky S-70 family. The most significant modificat ...

AN/APS-127

AN/APS-127 is a derivative of AN/APS-124 adopted for light fixed wings aircraft. AN/APS-115/116 was too heavy and bulky for light aircraft, and AN/APS-124 for helicopters was an ideal candidate for adoption for light fixed winged aircraft, and the result is the X-band AN/APS-127, which equipped Danish

Gulfstream III The Gulfstream III, a business jet produced by Gulfstream Aerospace, is an improved variant of the Grumman Gulfstream II. Design and development The Gulfstream III was built at Savannah, Georgia, in the United States and was designed as an i ...

and

USCG The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, mu ...

HU-25.

AN/APS-134

Knowledge gained from the success of AN/APS-124 and AN/APS-127 was used to upgrade AN/APS-115 and AN/APS-116, and the result is the X-band AN/APS-134, which has a

track while scan The track while scan (TWS) is a mode of radar operation in which the radar allocates part of its power to tracking the target or targets while part of its power is allocated to scanning, unlike the straight tracking mode, when the radar directs all ...

(TWS) mode, and up to 32 surface targets can be simultaneously tracked. Developed as an "international successor" to AN/APS-115/116, AN/APS-134 utilizes TWT and it is integrated with on board

electronic warfare support measures In military telecommunications, electronic support (ES) or electronic support measures (ESM) gather intelligence through passive "listening" to electromagnetic radiations of military interest. They are an aspect of electronic warfare involving ac ...

(ESM).

AN/APS-137

A further development of AN/APS-115/116/124/127/134 is the X-band AN/APS-137, incorporating

(SAR),

(ISAR) and Ground

moving target indication Moving target indication (MTI) is a mode of operation of a radar to discriminate a target against the clutter. It describes a variety of techniques used for finding moving objects, like an aircraft, and filter out unmoving ones, like hills or tree ...

(GMTI) modes. The resolution in SAR & ISAR modes is 0.9 m (3 ft). A helicopter version of AN/APS-137 was also developed, but it lost out to Telephonics AN/APS-143.

AN/APS-148

AN/APS-148 Sea Vue (SeaVue) radar is a X-band radar based on the knowledge of AN/APS-137, developed by Raytheon for light fixed winged aircraft. SeaVue is a modular design that is upgradable, with only three

line-replaceable unit A line-replaceable unit (LRU), lower line-replaceable unit (LLRU), line-replaceable component (LRC), or line-replaceable item (LRI) is a modular component of an airplane, ship or spacecraft (or any other manufactured device) that is designed to b ...

AN/APS-149

AN/APS-149 Littoral Surveillance Radar System (LSRS) is the first model in the radar family that adopts active electronically scanned array (AESA) radar, and it is developed for littoral and overland surveillance radar, initially fielded aboard the service's P-3C Block Modification Update Program (BMUP) maritime patrol and surveillance aircraft. The wide-aperture radar is mounted in a ventral pod attached to the belly of the host aircraft by at least three attachment points.AN/APS-149
/ref>

AN/APS-506

AN/APS-506 is the Canadian derivative of AN/APS-116 with the addition of Spotlight SAR mode. Two more additional real-time imaging modes are also incorporated, including ISAR and strip map modes.

References

{{DEFAULTSORT:AN APY-10 Aircraft radars Synthetic aperture radar