Leisure Marine Seahawk
Seahawk's first use was within Raymarine's Super High Definition digital radars which, to a large extent, were designed to be "Seahawk Friendly".
The first two images were taken a few seconds apart from the same radar. The only difference in that radar's adjustment was to turn on the beamwidth-reduction part of the Seahawk algorithm. Ideally the colour gain should then have been reduced because the beamwidth-reduction conserves most of the target energy so its peak amplitude increases by just under 6dB. The image shows evidence of saturating the palette but the effect can be seen.
The next is a photograph of a cluster of ten small buoys in Portsmouth harbour: they would be expected to be poor radar reflectors.
The radar which carries Seahawk is capable of displaying different radar pictures side by side using alternate transmit pulses. Its normal function is to operate on two radar ranges. The final image uses it to show the buoys with Seahawk on and off.
