1.

What physical factors limit the antennas that may be used for airborne radar?

2.

For a radar on an aircraft with a velocity of 350 m/s and having a depression angle when viewing the radar horizon of 10 , what is the velocity spread of the sidelobe clutter? If the radar frequency is 3.3 GHz (S band), what is the spectral spread of the sidelobe clutter? If the mainbeam has an azimuth of 60 relative to the platform velocity, and a depression angle of 25 , what is the mainbeam clutter velocity? What is the corresponding Doppler-frequency shift? If the azimuth beamwidth is 1.5 , what is the mainbeam velocity spread? What is the corresponding mainlobe spectral spread?

3.

What class of pulse-Doppler waveforms is used to view targets that are traveling toward the front of an aircraft radar platform?

4.

What is the maximum PRF that may be used to view targets that are free of mainlobe clutter at ranges up to 500 km in a low-PRF mode?

5.

For DPCA operation with antenna phase centers separated along the platform velocity vector by 2m, and with a platform velocity of 300 m/s, what is the required radar PRF?

6.

Which airborne and SBR technique may be used to resolve and detect targets that are not resolved in angle or in radial velocity from the mainbeam clutter?

7.

An SBR has a velocity of 7 km/s, a frequency of 5.5 GHz, and an antenna dimension parallel to the...