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AN/MPN

The AN/MPN is a mobile Ground-controlled approach radar first used during World War II. "MPN" is Joint Electronics Type Designation System nomenclature for (Ground) Mobile (M), Pulsed (P), Navigation aid (N).

Variations edit

  • AN/MPN-1 was used to assist the process of directing aircraft over a predetermined glide path for safe approach to an aerodrome runway under conditions approaching zero visibility. A V-8 truck contains the system's two PE-127 power units (rated output of each 7.5 KW), one air conditioner unit, and equipment spare parts. An additional diesel generator was usually mounted on a bomb trailer and towed behind the radar trailer. The V-2 trailer contains the system's radar and communications sets. The radar provides range and azimuth information on aircraft within a radius of 30 miles (48 km) with an operational ceiling of 4,000 feet (1,200 m). High Frequency (HF) and Very High Frequency (VHF) communications were provided by the SCR-274 transmitter, and BC-342 receivers. Ultra High Frequency (UHF) communications were added later via tactical radios normally jeep mounted for use by forward air controllers.
 
AN/MPN-1 radar, 1944
  • AN/MPN-2 was a mobile radar beacon which provided navigational aid and homing facilities for aircraft. Its major components, AN/CPN-6, and AN/CPN-8, were mounted in a trailer van.
  • AN/MPN-3 is similar to the MPN-1A except that it had single, rather than dual radar sets for each channel, improved mobility because of decreased weight, fewer communications channels, and reduced number of personnel.
  • AN/MPN-5
  • AN/MPN-8
  • AN/MPN-11 was a mobile (trailer-mounted) version of the AN/CPN-4 GCA unit. The CPN-4 was the follow-on replacement for the MPN-1. It contained newer, more powerful radars, better radios including UHF as standard and power-operated slewing of the precision approach radar (PAR) antennas. The horizontal and vertical radar presentations were contained on a single CRT screen. If necessary, a single operator could perform all of the GCA functions. (CPN stands for air-transportable "Cargo" Radar for Navigation.) The entire CPN-4 unit could be broken down into air-transportable pieces.)
  • AN/MPN-14 Mobile Ground Approach System can be configured as a complete Radar Approach Control (RAPCON) or Ground Controlled Approach (GCA) facility. The radar unit is used by air traffic controllers to identify, sequence, and separate participating aircraft, provide final approach guidance through air defense corridors and zones, and coordinate ID and intent with local air defense units at assigned airports and air bases. These services can be provided in all types of weather. It is capable of identifying aircraft using secondary radar up to a 200-nautical-mile (370 km) radius and primary radar coverage to 60 nautical miles (110 km). The PAR provides both azimuth and elevation information from 15-nautical-mile (28 km) to touchdown. Both the PAR and ASR can be used as final approach aids. The unit has three ASR display indicators and one PAR indicator located in the operations shelter, and one each ASR and PAR indicator located in the maintenance shelter. Complete operations are conducted from the operations trailer. The system is limited to a single runway but has the capability of providing opposite direction runway operations with the aid of a transportable turntable.
  • AN/MPN-14K Mobile Ground Approach System
  • AN/MPN-25 ITT product that scans the PAR coverage area and capable of scanning 360 degree using the same antenna. The system then process the raw target data to form a data word sending it to a computer display operating on Solaris. It is a 30 nmi (56 km) asr coverage and 20 nmi (37 km) PAR coverage. The system can operate in three different modes to include ASR, PAR and Combined mode. In ASR the azimuth antenna spins at 60 RPMs and used only to process targets typical to any ASR and also utilizes the AN/TPX-56 to process IFF targets. Both raw returns and IFF are processed in the tracker. In PAR mode the azimuth antenna does not spin and fixed normally on the reciprocal runway heading to pickup targets in azimuth and elevation planes to process typical PAR targets. In combined mode the azimuth antenna spins at 60 RPM's to provide the 1 second ICAO update rate to the PAR display. The antenna arrays consist of Trans Receive Modules (TR) modules that are calibrated for phase and power to allow formation of the RF beam in space. The display software has two modes of operation ASR/PAR. The PAR display utilizes ITT software and the ASR software is a derivative of BDM software used at several ranges.
  • AN/MPN-26 A program that was never accepted by the government.

Earlier radars included the AN-FPN-36 "Quad Radar", a compact and portable system that could function as either an airport surveillance radar, GCA radar, non-precision ASR approach radar, or airport surface detection equipment, and the AN-CPN-4, a larger, more modern and precise system that provided those functions. The AN/MPN-26 program was cancelled in 2008.

See also edit

References edit

  • TM 11-1343 AN/MPN-1 technical operations manual dated July 1944
  • TM 11-487-C1 military standardization handbook dated 1965

External links edit

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This article includes a list of references related reading or external links but its sources remain unclear because it lacks inline citations Please help to improve this article by introducing more precise citations April 2016 Learn how and when to remove this template message The AN MPN is a mobile Ground controlled approach radar first used during World War II MPN is Joint Electronics Type Designation System nomenclature for Ground Mobile M Pulsed P Navigation aid N Contents 1 Variations 2 See also 3 References 4 External linksVariations editAN MPN 1 was used to assist the process of directing aircraft over a predetermined glide path for safe approach to an aerodrome runway under conditions approaching zero visibility A V 8 truck contains the system s two PE 127 power units rated output of each 7 5 KW one air conditioner unit and equipment spare parts An additional diesel generator was usually mounted on a bomb trailer and towed behind the radar trailer The V 2 trailer contains the system s radar and communications sets The radar provides range and azimuth information on aircraft within a radius of 30 miles 48 km with an operational ceiling of 4 000 feet 1 200 m High Frequency HF and Very High Frequency VHF communications were provided by the SCR 274 transmitter and BC 342 receivers Ultra High Frequency UHF communications were added later via tactical radios normally jeep mounted for use by forward air controllers nbsp AN MPN 1 radar 1944AN MPN 2 was a mobile radar beacon which provided navigational aid and homing facilities for aircraft Its major components AN CPN 6 and AN CPN 8 were mounted in a trailer van AN MPN 3 is similar to the MPN 1A except that it had single rather than dual radar sets for each channel improved mobility because of decreased weight fewer communications channels and reduced number of personnel AN MPN 5 AN MPN 8 AN MPN 11 was a mobile trailer mounted version of the AN CPN 4 GCA unit The CPN 4 was the follow on replacement for the MPN 1 It contained newer more powerful radars better radios including UHF as standard and power operated slewing of the precision approach radar PAR antennas The horizontal and vertical radar presentations were contained on a single CRT screen If necessary a single operator could perform all of the GCA functions CPN stands for air transportable Cargo Radar for Navigation The entire CPN 4 unit could be broken down into air transportable pieces AN MPN 14 Mobile Ground Approach System can be configured as a complete Radar Approach Control RAPCON or Ground Controlled Approach GCA facility The radar unit is used by air traffic controllers to identify sequence and separate participating aircraft provide final approach guidance through air defense corridors and zones and coordinate ID and intent with local air defense units at assigned airports and air bases These services can be provided in all types of weather It is capable of identifying aircraft using secondary radar up to a 200 nautical mile 370 km radius and primary radar coverage to 60 nautical miles 110 km The PAR provides both azimuth and elevation information from 15 nautical mile 28 km to touchdown Both the PAR and ASR can be used as final approach aids The unit has three ASR display indicators and one PAR indicator located in the operations shelter and one each ASR and PAR indicator located in the maintenance shelter Complete operations are conducted from the operations trailer The system is limited to a single runway but has the capability of providing opposite direction runway operations with the aid of a transportable turntable AN MPN 14K Mobile Ground Approach System AN MPN 25 ITT product that scans the PAR coverage area and capable of scanning 360 degree using the same antenna The system then process the raw target data to form a data word sending it to a computer display operating on Solaris It is a 30 nmi 56 km asr coverage and 20 nmi 37 km PAR coverage The system can operate in three different modes to include ASR PAR and Combined mode In ASR the azimuth antenna spins at 60 RPMs and used only to process targets typical to any ASR and also utilizes the AN TPX 56 to process IFF targets Both raw returns and IFF are processed in the tracker In PAR mode the azimuth antenna does not spin and fixed normally on the reciprocal runway heading to pickup targets in azimuth and elevation planes to process typical PAR targets In combined mode the azimuth antenna spins at 60 RPM s to provide the 1 second ICAO update rate to the PAR display The antenna arrays consist of Trans Receive Modules TR modules that are calibrated for phase and power to allow formation of the RF beam in space The display software has two modes of operation ASR PAR The PAR display utilizes ITT software and the ASR software is a derivative of BDM software used at several ranges AN MPN 26 A program that was never accepted by the government Earlier radars included the AN FPN 36 Quad Radar a compact and portable system that could function as either an airport surveillance radar GCA radar non precision ASR approach radar or airport surface detection equipment and the AN CPN 4 a larger more modern and precise system that provided those functions The AN MPN 26 program was cancelled in 2008 See also editList of U S Signal Corps vehicles Joint Electronics Type Designation System Rebecca Eureka transponding radar Precision approach radar LORANReferences editTM 11 1343 AN MPN 1 technical operations manual dated July 1944 TM 11 487 C1 military standardization handbook dated 1965External links edithttps books google com books id FHi5wRMtQ2QC amp dq AN MPN 1 RADAR amp pg PA147 https books google com books id wpFMWeLmp4cC amp dq AN MPN 1 RADAR amp pg PA193 http www mobileradar org radar descptn 1 html mpn 1 https web archive org web 20090227032458 http www tpub com content radar TM 11 487C 1 index htm http www globalsecurity org military library news 2002 08 mil 020821 usaf02 htm mpn 25 Retrieved from https en wikipedia org w index php title AN MPN amp oldid 1169501527, wikipedia, wiki, book, books, library,

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