#### Problem 10.2 A radar system is characterized by the following parameters: Pt =1 kW, τ = 0.1 µs, G = 30 dB, λ = 3 cm, and Tsys = 1,500 K. The radar cross section of acar is typically 5 m2. How far away can the car be and remain detectable by the radarwith a minimum signal-to-noise ratio of 13 dB?

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#### Problem 10.1 A geostationary satellite is at a distance of 40,000 km from aground receiving station. The satellite transmitting antenna is a circular aperture with a1-m diameter, and the ground station uses a parabolic dish antenna with an effectivediameter of 20 cm. If the satellite transmits 1 kW of power at 12 GHz and the groundreceiver is characterized by a system noise temperature of 1,000 K, what would be thesignal-to-noise ratio of a received TV signal with a bandwidth of 6 MHz? The antennasand the atmosphere may be assumed lossless.

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