Trigger Maru Overhauled or just add my
stolen fair and square Trigger Maru keyboard commands. Shift-i gets a quick identification of the target. Take two stadimeter observations sent to the TDC 10 seconds or more apart and then the stopwatch button on the speed input part of the TDC will give you an estimate of target speed and course. Seems pretty assisted to me, and pretty well the same as SH3.
One thing I like about it is that you get what you pay for. That free estimate is often free of good information.