MULTISENSOR DATA FUSION

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Laser radar image taken from a helicopter shows a parking lot with cars. The only moving car is in lower right part with a north-south orientation, while all other cars have east-west orientation.

The laser rader is manufactured by SAAB Dynamics in Sweden. It generates image elements from a laser beam that is split into short pulses by a rotating mirror. The laser pulses are transmitted to the ground, in a scanning movement, and when reflected back to the platform on the helicopter a receiver collects the returning pulses which are stored and analyzed. The results are points with x, y, z coordinates and time t. The resolution is about 0.3 m.