AN/FPQ-4 C-Band Missile Tracking Radar

[tbrandon517]

DB Selector

Both

Baseline

CWBD 2612 AN/FPQ-16 PARCS & CWDB 834 AN/FPS-108 COBRA DANE

Hypothetical

No

Name

AN/FPQ-4

Sensor Generation

Late 1950s

Range (nm)

1000 nm

Horizontal Arc (deg)

360 Deg (limited by specific installations ie 180 deg rear are on American Mariner)

Vertical Arc (deg)

-10 to +190 deg

Sensor Capabilities

Air Search, Space Search - ABM, Range Information, Altitude Information, Speed Information, Heading Information

Sensor Codes

Pulse-Only Radar Continuous Tracking

Search/Track Frequencies

G Band (4-6 GHz) [Old C Band] 5-7.5 cm

Lower Frequency (Hz)

5400

Upper Frequency (Hz)

5900

Scan Interval (s)

Continuous tracking, refreshed every 5 seconds

Target Altitude (ft)

600 ft - ~32,000 nm (spacetrack)

Horizontal Beamwidth (deg)

1.2 degrees at thehalf-power points

Vertical Beamwidth (deg)

1.2 degrees at thehalf-power points

System Noise Level (dB)

11 db

Processing Gain/Loss (dB)

53.2-53.4 db/49.3-51.2 Gain/Loss

Peak Power (W)

3,050,000 W

Pulse Width (μs)

0.25, 0.50, 1.0 usec

Blind Time (μs)

1

PRF (Hz)

341-1707

Source Level (dB)

N/A

Pulse Length (ms)

N/A

TASS/VDS Length (m)

N/A

TASS/VDS Depth (m)

N/A

Convergence Zones

N/A

Comments

Once locked onto their target were accurate within 6.1 metres (20 ft) at a distance of 2,000 kilometres (1,200 mi).

AN/FPQ-4 C-Band Radars appear to be a precursor to AN/FPQ-6 and analogous to the AN/FPS-16

Sources

Refer to #2983

https://apps.dtic.mil/sti/tr/pdf/AD0260721.pdf https://apps.dtic.mil/sti/tr/pdf/AD0654925.pdf https://ntrs.nasa.gov/api/citations/19700010585/downloads/19700010585.pdf https://transition.fcc.gov/ib/files/1_08_02/ntia_sec2.pdf https://wsmrmuseum.com/wp-content/uploads/2022/01/AN-FPS-16-Context-June-2016.pdf https://en-academic.com/dic.nsf/enwiki/6586150 https://www.shipscribe.com/usnaux2/AGM/AGM12.html https://ntrs.nasa.gov/api/citations/19660006851/downloads/19660006851.pdf https://www.esd.whs.mil/Portals/54/Documents/FOID/Reading%20Room/DARPA/22-F-0430_Doc_1_ARPA_Order_Summary_1958-1976.pdf https://archive.org/stream/history-of-magnetron/history%20of%20monopulse%20radar%20in%20us_djvu.txt https://www.liquisearch.com/anfps-16 https://smartencyclopedia.org/content/list-of-military-electronics-of-the-united-states/ https://www.liquisearch.com/anfps-16/anfpq-4 https://www.radartutorial.eu/19.kartei/01.oth/karte025.en.html https://www.radartutorial.eu/19.kartei/01.oth/karte008.en.html

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