Space Surveillance Sensors: SSN Phased-Array Radars Overview Table (April 13, 2012)

Tabular Overview of SSN Phased Array Radars

For details and references, see posts on individual systems.

   FPS-85 PARCS (Cavalier) Cobra Dane BMEWS                  (per face) PAVE PAWS             (per face)
           
Location (s) Florida North Dakota Shemya (Aleutians) U.K., Greenland MA, CA, AK
           
Part of GMD System?   No  No Yes Yes CA Yes,                         MA and AK                Not Yet
           
Frequency (GHz)   0.44 0.44 1.23 0.44 0.44
           
Wavelength (m)   0.68 0.68 0.24 0.68 0.68
           
Peak  Power (MW)    35 14.3 15.4 0.85 0.60
           
Average Power (kW)   175 715 920 255 150
           
Maximum Bandwidth (MHz)    10    ? 5 (200         limited scan) 10 1 (10?)
           
Max. Pulse Length (ms)  0.25 1.0-2.5? 1.5 16                                  (6 in search) 16                                      (8 in search)
           
Number of Antenna Elements (active) 5,184(t)   4,660(r) 6,144 15,360 2,560 1,792
           
Number of Antenna Elements (total) 5,184(t)    19,500(r)       6,144 34,768 3,584 2,677
           
Antenna Area (m2) 724(t) 2,640(r)  707 661 515 384
           
Power-Aperture Product  (W-m2) 4.6×108 5.1×108 6.1×108 1.3×108 5.8×107 
           
Published Single-Pulse Sensitivity (1 m2, 1,000 km) 100,000 (250 μs pulse) “Similar to but less than FPS-85,”  “less than FPS-85” 37,200 – 52,500  (1.5 ms pulse)   ~ 0.1 that of           FPS-85

(t) = transmit

(r) = receive

P-A not corrected for antenna thinning

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