A method and apparatus are disclosed that enable an over-the-horizon-radar
(OTHR) system to detect and track multiple target classes simultaneously,
where target classes are defined by the speed and acceleration of the
tracked objects. The OTHR is tasked in a staring mode, with a bandwidth
and waveform repetition frequency that enable detection of Doppler shifts
from all target types, with sufficient clutter reduction and range
resolution. The backscattered echoes are buffered for each target class
and processed independently. The output of an automatic tracking
algorithm then preferentially plots target progress on a single digital
map for all target classes.