Timekeeping for the laser ranging experiment at McDonald Observatory

Time synchronization for lunar laser ranging probe

A theoretical/experimental program to develop active optical pollution sensors, part 2

Progress is reported on experimental investigations of Lidar and the application of Lidar to environmental and atmospheric science. Specifically the following programs are considered: calibration and application of the LaRC 48-inch Lidar; efficient and certain detection of SO2 and other gases in the calibration tank using the Raman Stack Monitor Lidar; the potential of Lidar remote sensing from the space shuttle; and the planning and mounting of efforts to realize the promise of backscatter differential absorption Lidar

Optical radar backscattering from the mesopause region during July and August 1967

Optical radar measurement of backscattering from mesopause region during July and August 196

Comments on a programmed multipulse range measurement system

Temperature effects in Q switched laser rada

A study of the origin, nature, and behavior of particulate matter and metallic atoms in the mesosphere, lower thermosphere, and at the mesopause

In a study of particulate matter and metallic atoms in the vicinity of the mesopause, three areas have received the most effort. These areas are: the significance of cometary dust influxes to the earth's atmosphere; the relation of nightglows to atmospheric motions and aerosols; and the feasibility of using an airborne resonant scatter lidar to study polar noctilucent clouds, the sodium layer, and fireball dust

A theoretical/experimental program to develop active optical pollution sensors: Quantitative remote Raman lidar measurements of pollutants from stationary sources

Typical pollutant gas concentrations at the stack exits of stationary sources can be estimated to be about 500 ppm under the present emission standards. Raman lidar has a number of advantages which makes it a valuable tool for remote measurements of these stack emissions. Tests of the Langley Research Center Raman lidar at a calibration tank indicate that night measurements of SO2 concentrations and stack opacity are possible. Accuracies of 10 percent are shown to be achievable from a distance of 300 m within 30 min integration times for 500 ppm SO2 at the stack exits. All possible interferences were examined quantitatively (except for the fluorescence of aerosols in actual stack emissions) and found to have negligible effect on the measurements. An early test at an instrumented stack is strongly recommended

Laser ranging to lunar retroreflectors - A. Signal detection, location in range-time, and timing precision. B. Laser pulse uniformity and timing

Laser ranging to lunar retroreflector

Report on December 1969 performance and calibration trip to the Lunar Laser Ranging Station at McDonald Observatory

Detector package, Korad laser, and receiver efficiency of laser ranging statio

The detector package for the laser ranging experiment at McDonald Observatory - Its design, performance and operation

Spectral and spatial filtering in detector package of lunar laser ranging probe

A programmed multipulse range measurement system

Problems that arise in practice due to nature of Q switched laser transmitter