76N6 Clam Shell Russian Low Altitude Acquisition Radar

tiers

false

true

categories

"WEG"

"Radar Systems"

"Ground Radars"

"Air Defense Radars"

"Tier4"

notes

"The 76N6 Clam Shell** is a ground-based three-dimensional radar that uses frequency-modulated continuous-wave transmission for target acquisition in dense electronic countermeasures (ECM) environments. It is designed to detect and track approaching and receding low radar cross-section targets, such as cruise missiles, at very low altitudes.The fully automatic system provides target track data for the fire-control system of static SA-10a or mobile SA-10b air defense systems. Approaching and receding target velocity, range and bearing are provided, with selectable 1- or 6-degree vertical beamwidths and selectable beam polarization. The FA-51MU antenna head subsystem combines a transmit and receive antenna, separated by a shielding structure, which prevents spillover from the transmitter into the receiver. The design includes sidelobe suppression features. The doubly curved transmit and receive reflectors measure about 9 ft 6 in (2.9 m) in each dimension. The manufacturer claims world-class resolution, high rejection of clutter (100 dB) and very accurate pointing. The antenna head is mounted on a hydraulically elevated mast, which is available in two versions: the 40V6M, which is 77 ft 5 in (23.8 m) tall; or the 40V6M2/40V6MD, which is 127 ft 3 in (38.6 m) tall. The mast and antenna head are mated before elevation on a semi-trailer that is towed by a MAZ-537 tractor. A conventional rotational coupler allows the antenna head to rotate through 360 degrees. The Clam Shell transmitter, fitted in the FA-52MU transmit/receive module, produces a high-purity continuous wave signal for search operations, with imposed low frequency modulation for ranging to targets. Signal-processing enables the rejection of clutter, terrain, precipitation, high-density chaff and jamming."

dis

name	"RDR TA SA 10 CLAM SHELL WHL"
string	"01.01.222.028.004.004.000"

images

"Clam_Shelll_(A).jpg"

"Clam_Shell_(B).jpg"

"Clam_Shell_(C).jpg"

sections

name

"76N6 Clam Shell"

sections

name

"System"

properties

name	"Alternative Designations"
value	"76N6 Clam Shell"

name	"Date of Introduction"
value	"late 1970s"

name	"Name"
value	"76N6 Clam Shell"

name	"Type"
value	"Acquisition Radar"

name	"Band"
value	"I (8-10 GHz)"

name	"Power"
value	"1.4 kW continuous wave"

name	"Turn-on Time"
value	"3 min"

name	"Setup Time (40V6M mast)"
value	"1 hour"

name	"Detection Range, Target Flying at 500 meters"
value	"90"
units	"km"

name	"Detection Range, Target Flying at 1,000 meters"
value	"120"
units	"km"

name	"Target Tracking"
value	"up to 180"

name	"Target Resolution Azimuth"
value	"1"
units	"deg"

name	"Target Resolution Range"
value	"1.9 km"

name	"Target Resolution Velocity"
value	"8.7 kmh"

name	"Minimum detectable Radar Cross-Section (RCS)"
value	"0.02 sq m"

name	"Maximum Target Speed"
value	"Mach 2.1"

name	"Average Power"
value	"1.4 kW"

name	"Peak Power"
value	"55.0 kW"

name	"Mean Time Between Failures"
value	"100 hours"

name	"Mount"
value	"he 76N6 CLAM SHELL (5N66M etc.) is mounted on a large trailer with a mast which is between 24 and 39 m (79 and 128 ft) tall. Usually is used with a mast."

name

"Automotive"

properties

name	"Mount"
value	"Trailer"

name	"Primary Mover"
value	"MAZ-537 tractor"

name

"Communications"

properties

name	"VHF Radio"
value	"R-168 Akveduk"

name	"HF Radio"
value	"R-161 Poisk"

variants

name	"91N6E"
notes	"This is an upgraded derivative of the 64N6 Big Bird radar system developed for the S-400 surface-to-air missile system. It has a fully digital design with a higher peak power rating than its predecessor to accommodate longer-range 48N6E3 and 40N6E missiles. The 91N6E is mounted on the new MZKT-7930 tractor."

type

"WEG"

version

1