High cost

Difficult to control

Noise immunity

Nigidity in response to design

Data acquisition

Data processing

Image recognition

Pattern recognition

Digital system is difficult to reprogramme

Digital signal processing provides better control of accuracy

Digital signals are difficult to store without deterioration

More ancient signal processing algorithms can be used

Weather dependent

Covers large area

Costlier

Complex system

Heavy equipments needed

Weather dependent

Less time consuming

Costlier