1. A method for determining whether a target of interest located within the resolution cells in a target area of interest is detectable with a radar system from the location and elevation of the radar system, comprising the steps of: (a) developing a topographic map of the terrain in the target area of interest; (b) mapping the radar resolution cells onto the topographic map; and (c) determining the radar propagation to each resolution cell on the topographic map to determine if the radar has sufficient signal-to-noise (SNR) to detect the target of interest.