We have a study on implementing a ship's radar design and mechanism in the forest where on a bunch of trees there's a radar reflector and that radar reflector can be seen in the radar but a radar will cost much so we're trying to find a cheap way
can a software design radio be used? or not?
Radar does not need to be expensive. It looks like you can buy a radar module for less than $1 on the Internet.
What are you trying to detect, how far away is it and fast does it move?
Any reason you've raised four near-identical posts? Three with silly titles..