1. A method for performing cell-averaging constant false alarm rate detection, the method comprising: computing a target value based on at least one power value associated with a cell under test in a two-dimensional region of a range-Doppler map; computing a noise value based on a weighted average of power values associated with cells surrounding the cell under test in the two-dimensional region of the range-Doppler map; computing a test value based on the target value and the noise value; and declaring a target in the cell under test when the test value exceeds a predefined threshold value.