Future technologies for lidar/DIAL remote sensing

In response to NASA thrusts in Mission to Planet Earth, this paper outlines several technology needs for future space-based lidar/DIAL applications. Several technological ''tall poles'' in flight systems are identified, including the technology for laser transmitters; systems technology; and major electro-optical, structural, mechanical, and thermal subsystems. Technologists must address the key questions associated with deploying these lidar systems in medium-class satellite and aircraft platforms. This involves demonstrating engineering parameters for long duration missions which are affordable in terms of weight, power, and volume. The question of affordability must be tied to simplicity in engineering design and to simplicity in the testing and verification of the instrument performance parameters. This requires sufficient testing and demonstration in laboratory systems to avoid the need for changes in engineering design late in the project life cycle.