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Suppose the ambiguity function of some waveform x(t) of duration ζ = 1 millisecond is given by
(NOTE: this is not a possible AF because it is not time-limited to ±ζ seconds duration in the delay coordinate, but it will do for this problem.) Suppose there are two targets in our line of sight, one at R = 10 km and one at R = 10.1 km. Also assume that both have the same RCS, and ignore the effect of the small range difference on the received echo power. The radar and the first target are stationary. The second target is traveling towards the radar at 100 m/s. The radar is operating at 1 GHz. What is the Doppler shift of the echo from the second target, in Hz? If the matched filter output is sampled at a time delay corresponding to the range to the first target (= 2*(10 km)/c = 66.67 μs), the sample will contain contributions from both the first and second targets. Use A(t,FD) to determine the amplitude of the contribution from the second target to the sample timed to correspond to the first target. Express your answer in dB.
Q. Explain Amplitude-shift keying? A carrier's amplitude is keyed between two levels (binary 1 and 0) in binary ASK. Figure shows the functions of a coherent ASK communication
The circuit is altered by replacing the capacitor, C1 with an inductor of 150mH and left with the switch in position (a) for a long time. At time t=0, the switch is moved from posi
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what is plane transmission grating/?
What is basic requirement of semiconductor laser? Draw its label diagram and explain its working with necessary theory. Write down the applications of semiconductor laser.
NOP No Operation Instruction No operation is performed when this instruction is executed. The instruction format is NOP All registers and flags re
Q Point charges, each of √4πε0 C, are located at the vertices of an equilateral triangle of side a. Determine the electric force on each charge.
Quantization Error Sampling followed by quantization is equivalent to quantization followed by sampling. Figure illustrates a message signal f (t) and its quantized version den
need calculation
Refer to the circuit shown below containing a two-port network. The two-port is a transconductance amplifier. The input port of the two-port is defined by terminals A and B. T
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