A ground-based air-surveillance radar operates at a frequency of 1300 MHz (L band). Its maximum range is 200 nmi for the detection of a target with a radar cross section of one square meter (σ 1 m2). Its antenna is 12 m wide by 4 m high, and the antenna aperture efficiency is Pa 0.65. The receiver minimum detectable signal is Smin 10 Determine the following:

 a. Antenna effective aperture Ae (square meters) and antenna gain G [numerically and in 1.2 dB, where G (in dB) 10 log1o G (as a numeric)]. 

b. Peak transmitter power 

c. Pulse repetition frequency to achieve a maximum unambiguous range of 200 nmi.

 d. Average transmitter power, if the pulse width is 2 μs. e. Duty cycle. f Horizontal beamwidth (degrees).