The azimuth angle and the elevation angle used in the RCS plots are defined in Figure B.1, where AZ denotes the azimuth angle, El denotes the elevation angle, and RLOS denotes the line of sight determined by AZ and EL.
In Figure B.2, Figure B.3, and Figure B.4, T denotes the transmitter; R is the receiver;
denotes the fixed bistatic angle;
is the initial bistatic angle;
is the final bistatic angle; AZ is the initial azimuth angle;
and EQLOS is the fixed equivalent line of sight.