. . "Optical radar." . . . . . . . . . . . "Theory and operation of the real-time data acquisition system for the NASA-LaRC differential absorption lidar (DIAL) final report for the period January 1, 1985 to December 31, 1985"@en . . . . "Atmospheric composition." . . "Real time operation." . . "Trace contaminants." . . "Data acquisition." . .