The physical basics of creating a lidar-radar complex for detecting gas pollutants in the atmosphere and controlling the state of the atmosphere are considered. To increase the reliability of remote measurements, a complex use of equipment operating in different spectral ranges is proposed. The combination of lidar and radar systems will make it possible to reliably determine concentrations of multicomponent atmospheric pollutants (using a lidar subsystem of differential absorption) and evaluate the speed and direction of their transfer (using a radar subsystem of meter range) and thereby obtain comprehensive information characterizing the operational environmental situation in the monitored area.
