Estimation and reduction of aerosol backscatter in optical systems

Backscatter reduction by receiver time gating and transceiver geometry is estimated for an idealized transmitter-receiver system. A transition range, equal to the distance at which the receiver subtends an angle equal to its acceptance angle, is discussed. It is found that half of the total backscatter occurs before this transition range. A nomogram and a design chart for backscatter computation are derived and presented.