phased array radar - element/antenna

hi
can any one tell me what are the elements/antennas requirements for a beam steering, does number of elements/antennas improve radar resolution? If yes then how can we calculate elements/antennas required in a system.

thanks

HI Friend

radar resolution increases in a number of ways.one being is your scanning angle.when you have directive beam you are more likely to detect targets.and you know beam steering. if your elements are arrayed in a proper manner it should add to your gain.

for beam steering you should either have a lens or a beam steering matrix.an antenna itself will not steer the beam.

Hope it helps

Best Regards
Sajid MOhammed.