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Suppose a 5GHz radar with antenna of effective area Ae-5 m 2 transmits 100kW. If a target with a ...
2. A pulsed airborne radar operating at 12GHz has a peak power of 1 kW and uses an antenna with directivity of 2100. Total monostatic path loss is 1.8. The radar views a surface at normal range of 3...
2. A pulsed airborne radar operating at 12GHz has a peak power of 1 kW and uses an antenna with directivity of 2100. Total monostatic path loss is 1.8. The radar views a surface at normal range of 3 km and grazing angle of t/2. The available received clutter power (Sre) is 1.1x10-11 What is the effective surface scattering area of σ,-2.5x10-4 for the surface? (10pts) a) b) If the radar and target orientation are changed such that the grazing...
Q5] Calculate the maximum range of radar system which operates at 3 cm wavelength with peak...
Q5] Calculate the maximum range of radar system which operates at 3 cm wavelength with peak pulse power of 1 MW. If its minimum detectable signal is 4mW. Radar cross section area is 15 m & effective antenna aperture is 6 m². Q6] Increasing the transmitter power of radar by a factor of 5 will increase the maximum range by what percent?
Prob. 5 (30 pts): You are to design a compensator for a radar antenna as shown...
Prob. 5 (30 pts): You are to design a compensator for a radar antenna as shown below. Determine G. (s) so that (a)* The closed-loop system has a bandwidth of approximately 20 rad/s. (b) The closed loop system must have positive phase margin. (6) Increase the attenuation at 200 rad/sec or higher. *You can assume that the bandwidth of the closed system is equal to the gain crossover frequency of the open loop system. You may wish to use the...
Explain your responses in reasonable details. Very brief answers are not acceptable 1) Why does radar employ the technique called pulse delay ranging? (Spts) 2) Speed of light-3x10ms Round-...
Explain your responses in reasonable details. Very brief answers are not acceptable 1) Why does radar employ the technique called pulse delay ranging? (Spts) 2) Speed of light-3x10ms Round-Trip Time-20 μ Calculate Range to the target aircraft.(Spts) 3) to figure above. The measured frequency difference is 10,000 hertz and the transmitter (Spts) has been increasing at a rate of 10 hertz per microsecond. Calculate range. 2) Speed of light 3x108 m/s Round-Trip Time 20 us Calculate Range to the target...
quastion 5 Q5. A radio station transmits with wavelength of 740 m. You are listening to the radio in your car when you enter a tunnel. The depth of the tunnel below the surface of the Earth slowly...
quastion 5
Q5. A radio station transmits with wavelength of 740 m. You are listening to the radio in your car when you enter a tunnel. The depth of the tunnel below the surface of the Earth slowly increases. At what depth will you no longer be able to hear the radio? The ground has a resistivity of 100 ohm-m. Reception ceases when the signal is reduced to 0.1% of the surface value. (Hint! Penetration depth in MT survey Q6....
QUESTION 12, 13, 14???? In 3.14, can write Gt and Gr directly in the answer, or...
QUESTION 12, 13, 14????
In 3.14, can write Gt and Gr directly in the answer, or assume
Gt and Gr =1 (specify hypothesis)
P3.8. Path loss, fading, and delay spread are the three most important radio propagation issues. Explain why those issues are important in a cellular system. What is the difference between fast fading and slow fading? Р3.9. How is radio propagation on land different from that in free space? What does a small delay spread indicate about the...
genuinely have no idea how to approach this question ! (5 pts) You shoot a bullet at a vertical target that is a uniform mass M and moment of inertia l (1/2)MR. The target is free to rotate withou...
genuinely have no idea how to approach this question !
(5 pts) You shoot a bullet at a vertical target that is a uniform mass M and moment of inertia l (1/2)MR. The target is free to rotate without friction about the hanging point P that is at the edge of the target as shown. Bullet has mass m, very small radius comparing to the target and moment of inertia le. Bullet is spinning about the line of travel at...
1. Suppose a meter stick (length = 1 m) goes flying past you at velocity =...
1. Suppose a meter stick (length = 1 m) goes flying past you at velocity = 0.5c . As the stick goes by you measure its length. What length would you measure? (5 pts) 2. Suppose the Earth collapsed down to a black hole (this can’t really happen). What would be the radius of the black hole in meters? Newton’s gravitational constant G = 6.7 × 10-11 in metric units. The mass of the earth is 6.0 ×1024 kg. (5...
QUESTION 1: Suppose a boat moves at 18.8 m/s relative to the water. If the boat...
QUESTION 1: Suppose a boat moves at 18.8 m/s relative to the water. If the boat is in a river with the current directed east at 3.10 m/s,what is the boat's speed relative to the ground when it is heading east, with the current, and west, against the current? (Enter your answers in m/s.) HINT (a) east with the current m/s (b) west against the current m/s QUESTION 2: An airplane maintains a speed of 663 km/h relative to the...
The area of a typical eardrum is about 5.00 x 10- ^5 m^2. Calculate the sound...
The area of a typical eardrum is about 5.00 x 10- ^5 m^2. Calculate the sound power (the energy per second) incident on an eardrum at: a) the threshold of hearing, and, b) the threshold of pain
2. A pulsed airborne radar operating at 12GHz has a peak power of 1 kW and uses an antenna with directivity of 2100. Total monostatic path loss is 1.8. The radar views a surface at normal range of 3 km and grazing angle of t/2. The available received clutter power (Sre) is 1.1x10-11 What is the effective surface scattering area of σ,-2.5x10-4 for the surface? (10pts) a) b) If the radar and target orientation are changed such that the grazing...
Q5] Calculate the maximum range of radar system which operates at 3 cm wavelength with peak pulse power of 1 MW. If its minimum detectable signal is 4mW. Radar cross section area is 15 m & effective antenna aperture is 6 m². Q6] Increasing the transmitter power of radar by a factor of 5 will increase the maximum range by what percent?
Prob. 5 (30 pts): You are to design a compensator for a radar antenna as shown below. Determine G. (s) so that (a)* The closed-loop system has a bandwidth of approximately 20 rad/s. (b) The closed loop system must have positive phase margin. (6) Increase the attenuation at 200 rad/sec or higher. *You can assume that the bandwidth of the closed system is equal to the gain crossover frequency of the open loop system. You may wish to use the...
Explain your responses in reasonable details. Very brief answers are not acceptable 1) Why does radar employ the technique called pulse delay ranging? (Spts) 2) Speed of light-3x10ms Round-Trip Time-20 μ Calculate Range to the target aircraft.(Spts) 3) to figure above. The measured frequency difference is 10,000 hertz and the transmitter (Spts) has been increasing at a rate of 10 hertz per microsecond. Calculate range. 2) Speed of light 3x108 m/s Round-Trip Time 20 us Calculate Range to the target...
quastion 5
Q5. A radio station transmits with wavelength of 740 m. You are listening to the radio in your car when you enter a tunnel. The depth of the tunnel below the surface of the Earth slowly increases. At what depth will you no longer be able to hear the radio? The ground has a resistivity of 100 ohm-m. Reception ceases when the signal is reduced to 0.1% of the surface value. (Hint! Penetration depth in MT survey Q6....
QUESTION 12, 13, 14????
In 3.14, can write Gt and Gr directly in the answer, or assume
Gt and Gr =1 (specify hypothesis)
P3.8. Path loss, fading, and delay spread are the three most important radio propagation issues. Explain why those issues are important in a cellular system. What is the difference between fast fading and slow fading? Р3.9. How is radio propagation on land different from that in free space? What does a small delay spread indicate about the...
genuinely have no idea how to approach this question !
(5 pts) You shoot a bullet at a vertical target that is a uniform mass M and moment of inertia l (1/2)MR. The target is free to rotate without friction about the hanging point P that is at the edge of the target as shown. Bullet has mass m, very small radius comparing to the target and moment of inertia le. Bullet is spinning about the line of travel at...
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