Description of the radar set, tactical-technical characteristics
Figure 1: SeaSonde in Norway
|frequency:||4.3 … 45 MHz
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):|
|peak power:||80 W|
|average power:||40 W|
|instrumented range:||up to 200 km|
|hits per scan:|
SeaSonde is operating in the HF-Band multistatic Over-The-Horizon radar designed to measure local surface windspeeds and wave directions.
The single radar consists of an approximately 7 m long dipole antenna and 19 inch rack frames for receiver and transmitter. Using very low frequencies (5 MHz), an additional transmitter antenna is needed, that is placed at a distance of about 100 … 150 m of the receiver antenne. At least two SeaSonde radars are normally required for creating 2-D surface current maps of direction and speed. The recommended maximum distance between adjacent radars is 40 … 60% of the radar’s offshore range.