CARSR

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CARSR Long range radar Set - A set of long range radar components built by Raytheon to upgrade FAA legacy radar sets to a common set of transmitters and receivers. Only the antenna components were retained, the rotary joint, diplexer/Polarizer and the physical antenna and drive mechanism.

USAF Personnel take antenna measurements during an evaluation visit to the CARSR FAA Radar at Benton, PA.

CARSR Radar

The Common Air Route Surveillance Radar (CARSR) is a new long-range L-band radar with a range of 200 nm. CARSR is the result of a Service Life Extension Program (SLEP) that replaced the vintage ARSR-1, ARSR-2, ARSR-3, FPS-20A, FPS-66A, FPS-67A/B and FPS-93A components with modern components. The klystron transmitters were replaced with a common solid-state transmitter. Even though the receiver and signal processors were upgraded by Northrop Grumman in the early 1990s, they were replaced with more modern software-driven components.

The new transmitter components transmit a fan beam as the antenna rotates at five rpm. The SLEP design uses advanced MTD (Moving Target Detector) techniques with enhanced sensitivity and detectability of weak targets in the presence of clutter to replace legacy moving target processing. The CARSR Radar is interfaced with either a Mode S or an ATCBI-6 secondary surveillance radar (Beacon) and also reports the weather in NWS six-level format. The CARSR SLEP upgrade also replaces the legacy Common Digitizer-2 (CD-2) processors and associated radar data interfaces.

Under a $260 million 2006 contract for the Long Range Radar Service Life Extension Program, Raytheon was selected by the FAA to replace 40-year-old legacy systems at 82 sites in the United States and Puerto Rico. The first production system was deployed to the Coopersville FAA Radar Site in Michigan and two systems were operational at the FAA Academy in Oklahoma City for training and engineering support.

The CARSR program is now complete and there are 80 operational CARSRs installed across the U.S. and Puerto Rico. In addition, three non-operational CARSRs are located at the FAA’s Aeronautical Support Center in Oklahoma City. The expected life of the upgraded radars is between 15-20 years.

CARSR Radar
Element Value Notes
Nomenclature CARSR
Origins FPS-20/ARSR-1
Variants
Manufacturer Raytheon
Type Long Range Search
Number Made 83
IEEE Band L Band
Frequency 1.2-1.4 GHz
PRF 3 Staggered PRFs
with distinct stagger ratios
Pulse Width 2 Long ~117 us
2 Short ~20 us
within 290 us TX time
4 pulses in each PRI
Rotation Speed 5 rpm
Power 8 amplifier modules
output a minimum
50 kW peak power
Range 200 nmi Long
Altitude 100,000 ft
Introduced


CARSR Training Set at FAA Monroney Center
CARSR Radar Configurations
Number Configuration Antenna Owner/Operator Notes
2 CARSR (FPS-20A) 1561 L-Band DOD/DHS/FAA
5 CARSR (FPS-66A) 1561 L-Band DOD/DHS/FAA
15 CARSR (FPS-67/A/B) 1561 L-Band DOD/DHS/FAA
1 CARSR (FPS-93A) 1561 L-Band DOD/DHS/FAA
28 CARSR (ARSR-1) 7172 L-Band DOD/DHS/FAA
15 CARSR (ARSR-2) 7172 L-Band DOD/DHS/FAA
1 CARSR (ARSR-2) 1561 L-Band DOD/DHS/FAA
13 CARSR (ARSR-3) 9200S L-Band DOD/DHS/FAA


Known CARSR Installations (edit list)
Seq Name/Location State Code Final ARTCC Notes
C-01 Citronelle FAA Radar Site AL QRB CARSR
ATCBI-6
ZHU *
C-02 Haleyville FAA Radar Site AL QPC CARSR
ATCBI-6
ZME -
C-03 Montgomery FAA Radar Site AL MGM CARSR
ATCBI-6
ZTL *
C-04 Russellville FAA Radar Site AR QXR CARSR
ATCBI-6
ZME -
C-05 Texarkana FAA Radar Site AR TXK CARSR
ATCBI-6
ZFW -
C-06 Phoenix FAA Radar Site AZ PHX CARSR
ATCBI-6
ZAB -
C-07 Seligman FAA Radar Site AZ QXP CARSR
ATCBI-6
ZLA -
C-08 San Pedro Hill FAA Radar Site CA QLA CARSR
ATCBI-6
ZLA *
C-09 Red Bluff FAA Radar Site CA RBL CARSR
Mode S
ZOA *
C-10 Boron FAA Radar Site CA QSR CARSR
ATCBI-6
ZLA *
C-11 Grand Junction FAA Radar Site CO GJT CARSR
Mode S
ZDV -
C-12 Denver FAA Radar Site CO QPK CARSR
Mode S
ZDV *
C-13 Trinidad FAA Radar Site CO TAD CARSR
Mode S
ZDV *
C-14 Ashburn FAA Radar Site GA QHN CARSR
ATCBI-6
ZJX *
C-15 Lincolnton FAA Radar Site GA QNK CARSR
ATCBI-6
ZTL *
C-16 Marietta FAA Radar Site GA ZTL CARSR
ATCBI-6
ATL *
C-17 Arlington FAA Radar Site IA QJO CARSR
ATCBI-6
ZAU -
C-18 Cascade FAA Radar Site ID QCK CARSR
Mode S
ZLC -
C-19 Ashton FAA Radar Site ID QVA CARSR
Mode S
ZLC *
C-20 Joliet FAA Radar Site IL JOL CARSR
ATCBI-6
ZAU -
C-21 Hanna City FAA Radar Site IL QUZ CARSR
ATCBI-6
ZAU *
C-22 La Grange FAA Radar Site IN QTZ CARSR
ATCBI-6
ZAU -
C-23 Indianapolis FAA Radar Site IN IND CARSR
ATCBI-6
ZID -
C-24 Hutchinson FAA Radar Site KS HTI CARSR
ATCBI-6
ZKC *
C-25 Oskaloosa FAA Radar Site KS QBZ CARSR
ATCBI-6
ZKC -
C-26 Garden City FAA Radar Site KS GCK CARSR
Mode S
ZKC -
C-27 Lynch FAA Radar Site KY QRI CARSR
ATCBI-6
ZID -
C-28 Alexandria FAA Radar Site LA AEX CARSR
ATCBI-6
ZHU -
C-29 Cummington FAA Radar Site MA QHA CARSR
ATCBI-6
ZBW -
C-30 Coopersville FAA Radar Site MI CPV CARSR
ATCBI-6
ZAU -
C-31 Canton FAA Radar Site MI QDT CARSR
ATCBI-6
ZOB -
C-32 Apple Valley FAA Radar Site MN QJE CARSR
ATCBI-6
ZMP -
C-33 Tyler FAA Radar Site MN QJC CARSR
Mode S
ZMP -
C-34 Kirksville FAA Radar Site MO IRK CARSR
ATCBI-6
ZKC -
C-35 St. Louis FAA Radar Site MO STL CARSR
ATCBI-6
ZKC -
C-36 Newport FAA Radar Site MS QNM CARSR
ATCBI-6
ZME -
C-37 Byhalia FAA Radar Site MS QYB CARSR
ATCBI-6
ZME -
C-38 Benson FAA Radar Site NC QRL CARSR
ATCBI-6
ZDC -
C-39 Maiden FAA Radar Site NC QRM CARSR
ATCBI-6
ZTL -
C-40 Omaha FAA Radar Site NE QHO CARSR
ATCBI-6
ZMP -
C-41 North Platte FAA Radar Site NE LBF CARSR
Mode S
ZDV -
C-42 West Mesa FAA Radar Site NM QSA CARSR
ATCBI-6
ZAB *
C-43 Silver City FAA Radar Site NM SVC CARSR
ATCBI-6
ZAB -
C-44 Mesa Rica FAA Radar Site NM QWC CARSR
Mode S
ZAB -
C-45 Gallup FAA Radar Site NM GUP CARSR
Mode S
ZDV -
C-46 Battle Mountain FAA Radar Site NV BAM CARSR
ATCBI-6
ZLC -
C-47 Fallon NAS FAA Radar Site NV NFL CARSR
Mode S
ZOA *
C-48 Angel Peak FAA Radar Site NV QAS CARSR
Mode S
ZLA *
C-49 Dansville FAA Radar Site NY DSV CARSR
ATCBI-6
ZNY -
C-50 Brecksville FAA Radar Site OH QDB CARSR
ATCBI-6
ZOB -
C-51 London FAA Radar Site OH QWO CARSR
ATCBI-6
ZID -
C-52 Oklahoma City FAA Radar Site OK OKC CARSR
ATCBI-6
ZFW *
C-53 Fossil FAA Radar Site OR QVN CARSR
ATCBI-6
ZSE -
C-54 Klamath Falls FAA Radar Site OR LMT CARSR
ATCBI-6
ZSE -
C-55 Oakdale FAA Radar Site PA PIT CARSR
ATCBI-6
ZOB -
C-56 Clearfield FAA Radar Site PA QCF CARSR
ATCBI-6
ZOB -
C-57 Benton FAA Radar Site PA QRC CARSR
ATCBI-6
ZNY -
C-58 Gettysburg FAA Radar Site SD QJB CARSR
Mode S
ZMP -
C-59 Joelton FAA Radar Site TN QOJ CARSR
ATCBI-6
ZME *
C-60 Amarillo FAA Radar Site TX AMA CARSR
Mode S
ZAB *
C-61 Rogers FAA Radar Site TX QYS CARSR
ATCBI-6
ZHU *
C-62 Houston FAA Radar Site TX HOUA CARSR
ATCBI-6
ZHU -
C-63 Keller FAA Radar Site TX FTW CARSR
ATCBI-6
ZFW *
C-64 Odessa FAA Radar Site TX QXS CARSR
ATCBI-6
ZFW -
C-65 Cedar City FAA Radar Site UT CDC CARSR
Mode S
ZLC *
C-66 Francis Peak FAA Radar Site UT FPK CARSR
Mode S
ZLC *
C-67 Saint Albans FAA Radar Site VT QHB CARSR
Mode S
ZBW -
C-68 Binns Hall FAA Radar Site VA QBN CARSR
ATCBI-6
ZDC -
C-69 Bedford FAA Radar Site VA QBE CARSR
ATCBI-6
ZDC *
C-70 The Plains FAA Radar Site VA QPL CARSR
ATCBI-6
ZDC -
C-71 Fort Lawton FAA Radar Site WA SEA CARSR
ATCBI-6
ZSE *
C-72 Horicon FAA Radar Site WI QHZ CARSR
ATCBI-6
ZAU -
C-73 Lovell FAA Radar Site WY QSI CARSR
Mode S
ZLC *
C-74 Lusk FAA Radar Site WY LSK CARSR
Mode S
ZDV -
C-75 Rock Springs FAA Radar Site WY RKS CARSR
Mode S
ZLC -
C-76 Kenai FAA Radar Site AK ENA CARSR
ATCBI-6
ZAN -
C-77 San Nicolas Island USN Radar Site CA ??? CARSR ??? -U.S. Navy
C-78 Punta Borinquen FAA Radar Site PR BQN CARSR
ATCBI-6
ZSU -
C-79 Pico Del Este FAA Radar Site PR QJQ CARSR
ATCBI-6
ZSU -
C-80 CARSR DSF FAA Radar Site OK --- CARSR --- -
C-81 CARSR PSF FAA Radar Site OK --- CARSR --- -
C-82 FAA Academy Radar Site OK --- CARSR
ATCBI-6
--- *

See Also:

Sources:

  • Wang, Brookner, Cornell Gerecke and Farr, Modernization of Enroute Air Surveillance Radar, IEEE Transactions on Aerospace and Electronic Systems, Vol. 48, No. 1, January 2012, pages 103-115.
  • Raytheon Receives FAA In-Service Milestone Decision To Upgrade Long Range Radars, Raytheon Company Press Release, 28 Sep 2011, Marlborough, Massachusetts. Link

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