Question: 3.6. A CW radar uses linear frequency modulation to determine both range and range rate. The radar wavelength is , and the frequency sweep is

3.6. A CW radar uses linear frequency modulation to determine both range and range rate. The radar wavelength is , and the frequency sweep is

. Let .

(a) Calculate the mean Doppler shift; (b)

compute and corresponding to a target at range , which is approaching the radar with radial velocity of .

Figure 3.10. GUI work space associated with the program

“range_calc.m”.

fm = 300Hz Δf = 50MHz 10 15

λ = 3cm

Δf = 200KHz t0 = 20ms fbu fbd R = 350Km 250m

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