Loading...
Please wait, while we are loading the content...
Similar Documents
Problems and possible solutions involved in hard target calibration of coherent doppler lidar
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Anderson, Richard |
| Copyright Year | 1987 |
| Description | The field of radiometry is surveyed with reference to coherent light, since the surfaces to be considered here are irradiated with coherent, polarized light. Definitions of some concepts are modified. In light of these modifications calibration problems are analyzed and solutions suggested. The most important task was to develop hard targets exhibiting minimal specular reflection (mirror-like and retroreflection) and following closely a Lambertian scattering curve. Bistable reflectometer experiments and integrating sphere measurements are used to physically characterize the targets. Optical and electron microscopy are used to physically characterize the targets. Since the BRDF matrix is not measured, this capability must be developed preferably for both bistatic and monostatic reflectometer measurements. The equipment is expensive and not yet developed. Calibration can be simplified if it can be proved that the BRDF matrix is diagonal for a diffuse scatterer. |
| File Size | 462221 |
| Page Count | 27 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19880006220 |
| Archival Resource Key | ark:/13960/t3rv5fm4b |
| Language | English |
| Publisher Date | 1987-11-01 |
| Access Restriction | Open |
| Subject Keyword | Lasers And Masers Target Recognition Calibrating Specular Reflection Doppler Radar Target Acquisition Electron Microscopy Reflectometers Optical Radar Polarized Light Coherent Light Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
