Interpolate coordinates at unrecorded timestamps
I have a gps units that records coordinates at rather random intervals (sometimes every 12 sec sometimes every 6 sec). There's another instrument that measures particulate matter at every second. I'm looking for a way to interpolate the coordinates at unrecorded timestamps for every second based on the existing coordinates and the speed of the movement, so that I can merge the gps data with the particulate matter dataset. To make things a bit easier, I can assume that the route between two consecutive coordinates is straight line and is travelled at a constant speed. So all I need to do is to