This paper provides a tutorial introduction to the principles of radar for persons with experience in optics but with little or no knowledge of radar. A typical radar system is described and the radar range equation is developed. The detection of signals embedded in a noise environment, the detection of target signals in a clutter environment, and the basic principles of radar antenna theory are discussed.
"Basic Radar Concepts: An Introduction To Radar For Optical Engineers", Proc. SPIE 0128, Effective Utilization of Optics in Radar Systems, (28 December 1977); doi: 10.1117/12.955965; https://doi.org/10.1117/12.955965