Question

above) be different from this value? 1.5 A radar mounted on an automobile is to be used to determine the distance to a vehicle trav- eling directly in front of it. The radar operates at a frequency of 9375 MHz (X band) with a pulse width of 10 ns ($10^{-8}$s). The maximum range is to be 500 ft. a. What is the pulse repetition frequency that corresponds to a range of 500 ft? b. What is the range resolution (meters)? c. If the antenna beamwidth were 6º, what would be the cross-range resolution (meters) at a range of 500 ft? Do you think this value of cross-range resolution is suf- ficient? d. If the antenna dimensions were 1 ft by 1 ft and the antenna efficiency were 0.6, what would be the antenna gain (dB)? e. Find the average power required to detect a 10 m$^2$ radar cross section vehicle at a range of 500 ft, if the minimum detectable signal is 5 \times 10$^{-13}$ W.

          above) be different from this value?
1.5 A radar mounted on an automobile is to be used to determine the distance to a vehicle trav-
eling directly in front of it. The radar operates at a frequency of 9375 MHz
(X band) with a pulse width of 10 ns ($10^{-8}$s). The maximum range is to be 500 ft.
a. What is the pulse repetition frequency that corresponds to a range of 500 ft?
b. What is the range resolution (meters)?
c. If the antenna beamwidth were 6º, what would be the cross-range resolution
(meters) at a range of 500 ft? Do you think this value of cross-range resolution is suf-
ficient?
d. If the antenna dimensions were 1 ft by 1 ft and the antenna efficiency were 0.6, what
would be the antenna gain (dB)?
e. Find the average power required to detect a 10 m$^2$ radar cross section vehicle at a range
of 500 ft, if the minimum detectable signal is 5 \times 10$^{-13}$ W.

above) be different from this value?
1.5 A radar mounted on an automobile is to be used to determine the distance to a vehicle trav-
eling directly in front of it. The radar operates at a frequency of 9375 MHz
(X band) with a pulse width of 10 ns (10^-8s). The maximum range is to be 500 ft.
a. What is the pulse repetition frequency that corresponds to a range of 500 ft?
b. What is the range resolution (meters)?
c. If the antenna beamwidth were 6º, what would be the cross-range resolution
(meters) at a range of 500 ft? Do you think this value of cross-range resolution is suf-
ficient?
d. If the antenna dimensions were 1 ft by 1 ft and the antenna efficiency were 0.6, what
would be the antenna gain (dB)?
e. Find the average power required to detect a 10 m^2 radar cross section vehicle at a range
of 500 ft, if the minimum detectable signal is 5 ×10^-13 W.

Added by Lisa P.

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