'Ghadir' OTH Radar

From Signal Identification Wiki
Jump to: navigation, search

'Ghadir' OTH Radar
Frequencies 28 MHz,29.7 MHz
Frequency Range 28 MHz - 29.7 MHz
Mode AM
Modulation Pulse
Emission Designator
Bandwidth 60 kHz,1000 kHz
Location Iran
Short Description 'Ghadir', is an Iranian over the horizon radar, part of Iran's Sepehr Phased Radar System.
I/Q Raw Recording
Audio Sample

Ghadir, is an Iranian over the horizon radar Ghadir is a 360°, 3D-radar, with a ceiling of 300 km, and a maximum range of 1,100 km. You can hear a high and a low tone, corresponding to the sweep rates of 870 and 307 sweeps/sec. sent in two separated bursts.

Unlike other OTHR's, Ghadir doesn't use FMCW modulation. Instead, it uses a shaped pulsed system which makes the edges of the signal hard to define. Because of this, the bandwidth of this signal can vary greatly, ranging from around 60 kHzKiloHertz (kHz) 10^3 Hz to splattering over 1 MHzMegaHertz (MHz) 10^6 Hz, depending on the power of the received signal for the user.


Sample 1:

Sample 2:

Sample 3:
Sample 3 (external)


Often seen on the 10 m-band, often long lasting on 28.245 MHzMegaHertz (MHz) 10^6 Hz.

Video Examples[edit]

Additional Links[edit]

Additional Images[edit]