Iran Sepehr / Ghadir phased array RADAR System | Signal Phantom
33The Iranian Sepehr / Ghadir phased array RADAR system is a tactical VHF monostatic RADAR. The system components were developed by Russia’s Rostec State Corporation OJSC Rosoboronexport using two variants of the Rezonans-NE RADAR system. Utilizing Amplitude Modulated on Pulse or AMoP modulation with a 40 kHz bandwidth, the system generates a high / low pulse repetition frequency (PRF) pattern ranging between 150 Hz and 870 Hz for long range / short range detection and tracking requirement. The system is operational on HF between 26 and 30 MHz or higher VHF carrier frequencies needed to obtain adequate detection and tracking of targets. Minimum RADAR cross section (RCS) is defined by ½ of the carrier operating frequency wavelength of the system center frequency, or 300/F in meters.
The phased receiver array is a stationary antenna array, setup as a quadrilateral square 100 meters per side; each side of the outer receiver array matrix provides both azimuth and elevation; the azimuth beam array consists of 64 parts setup in a matrix of 16 masts X 4 rows high, individually each array is made up of two Nadienenko’s dipoles located perpendicular to each other at an angle of 45° to the horizontal plane.
Each single elevation array supports eight Nadienenko’s dipoles perpendicular to each other at an angle of 45° to the horizontal plane, a total of 72 arrays per side providing 90° azimuth coverage and 1.5 to 80 degrees in elevation. The system uses all 288 main outer receiver arrays to provide 360° coverage and a “stated” range of 800 to 3,000 kilometers (10-1100 km spec) in distance and up to 300 kilometers in elevation (100 km spec).
Each single transmitter array is made up of eight log periodic arrays mounted at an alternating angle of 45° on a vertical mast providing mutual orthogonal polarization, one array mast for each corresponding transmitter side: a total of 32 transmitting arrays per system. Four current sites are geolocated at 29°37'02"N 52°02'36"E and 36°04'08"N 47°30'38"E and a modified variation with the main transmitting arrays re-located to the central section of the receiver antenna arrays are located at 31.473020°N 48.581924°E and 35.133561°N 52.469442°E.
Rezonans-NE uses electronic beam forming for both azimuth and elevation, each array side independently adjustable. The bulk of Rezonans-NE system hardware is modular, built inside special shipping containers for ease of deployment and setup. Each side of the RADAR system will be attached to its own solid-state multi-channel power amplifier, pulse train generator, dual 64 channel receivers, couplers/circulators, main digital signal processor, server and a central operator workstation and digital radio communication system.
Iranian Military is currently constructing a new bi-static OTH-B HF over-the-horizon RADAR that is similar to the Russian 29b6 RADAR system.
The domestic defense industries Iran Electronics Industries (IEI) builds Radars, communications equipment, EW components domestically.
Recorded May 2023; Written Aug 2020 by Tyler Stampfli, KA0KA for SignalPhantom.com If interested in additional HF signals see @SignalPhantom
For HF Jamming signal see: • Iran HF Jamming Israel Navy Hybrid modem |...
Used by Iranian defense attempts to jam Israeli Navy hybrid modem signals used between 2 and 9 MHz, seen in this selection the hybrid modem is off line. Recorded 25 Oct 2024 by Tyler Stampfli, KA0KA for additional Iranian, Syrian and Middle East HF signals, see @SignalPhantom for SignalPhantom.com
For Iran Buzzer see: • Iran Shortwave Jamming Buzzer Invades 15m ...
21001.500 kHz This jamming signal is Geo-located to the Northern section of Iran, just below Azerbaijan according to my TDoA results. Recorded by Tyler Stampfli, 25 Oct 2024, KA0KA @SignalPhantom for SignalPhantom.com
end