1 Calculate the probability of detection for Swerling III type target model using both coherent and noncoherent integration of 32 pulses. The probability of false alarm is 10􀀀9 and the...

1 Calculate the probability of detection for Swerling III type target model using both coherent and noncoherent integration of 32 pulses. The probability of false alarm is 10􀀀9 and the signal-to-noise ratio is 18 dB. Compare the two results and explain the differences.

2 Determine the required single pulse signal-to-noise ratio to achieve a probability of false alarm of 10􀀀6 with a probability of detection of 0:99 when noncoherently integrating 20 pulses for a Swerling II type target model. Compare this result with the Shnidman approximation.

3 Describe the purpose of guard cells in constant false alarm rate processing and explain how the number of guard cells affects CFAR performance.