TABLE OF CONTENTS | 1. | What are the two primary radar parameters on which the search performance depends? |
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| 2. | A radar has an average transmit power of 100 kW, an effective receive aperture area of 20 m 2, a system noise temperature of 450K, and system losses of 4 dB. Assume 50% of the radar power is used to search a volume 90 in azimuth and 45 in elevation using the optimum search time, and that the additional search losses total 6.5 dB. At what detection range can the radar achieve a S/N of 15 dB on a ?15 dBsm target with a radial velocity of 2 km/s? What is the search time? What are the assured acquisition range and the average acquisition range? |
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| 3. | A rotating search radar has an azimuth beamwidth of 2 and an angular rotation rate of 20 /s. What is the rotation period? What PRF is needed to have 15 pulses illuminate the target on each scan? Using noncoherent integration and this PRF, what is the single-pulse S/N needed to provide P D = 0.9 and P FA = 10 ?6 on a Swerling 1 target? If frequency diversity is used to convert the target return to Swerling 2, what is the required single-pulse S/N? If the radar average power is 20 kW, the transmit gain is 25 dB, the receive aperture area is 13 m 2 (an L-band radar), the fixed radar losses are 5.0 dB, the system noise... |
