If you subtract one ship's position from another (to find the vector displacement) the problem becomes one of minimising this displacement. But the displacements plotted at various times form a line...
Type: Posts; User: pbrockway2
Re: Closest Point of Approach (CPA) mathematical formula in ship radar
If you subtract one ship's position from another (to find the vector displacement) the problem becomes one of minimising this displacement. But the displacements plotted at various times form a line...
Re: Closest Point of Approach (CPA) mathematical formula in ship radar
Wikipedia has an article on the distance from a point to a line.