'Ghadir' OTH Radar

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'Ghadir' OTHOver The Horizon (very long range) Radar
IranOTH.png
Frequencies 28 MHzMegaHertz (MHz) 10^6 Hz28,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
28,000 kHzKiloHertz (kHz) 10^3 Hz
,29.700 MHzMegaHertz (MHz) 10^6 Hz29,700,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
29,700 kHzKiloHertz (kHz) 10^3 Hz
28,000 kHzKiloHertz (kHz) 10^3 Hz
28 MHzMegaHertz (MHz) 10^6 Hz
29,700 kHzKiloHertz (kHz) 10^3 Hz
29.7 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range 28 MHzMegaHertz (MHz) 10^6 Hz28,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
28,000 kHzKiloHertz (kHz) 10^3 Hz
- 29.7 MHzMegaHertz (MHz) 10^6 Hz29,700,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
29,700 kHzKiloHertz (kHz) 10^3 Hz
Mode AMAmplitude Modulation
Modulation Pulse
ACF
Bandwidth 60 kHzKiloHertz (kHz) 10^3 Hz60,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
0.06 MHzMegaHertz (MHz) 10^6 Hz
,1MHz1,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
1,000 kHzKiloHertz (kHz) 10^3 Hz
60 kHzKiloHertz (kHz) 10^3 Hz
0.06 MHzMegaHertz (MHz) 10^6 Hz
1,000 kHzKiloHertz (kHz) 10^3 Hz
MHzMegaHertz (MHz) 10^6 Hz
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 1MHz, depending on the power of the received signal for the user.


Samples[edit]

Sample 1:

Sample 2:

Frequencies[edit]

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]