Loading...
Please wait, while we are loading the content...
Similar Documents
Test results from lageos-2 optical characterization using pulsed lasers
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Selden, Michael Varghese, Thomas K. Clarke, Christopher Zagwodzki Sr., Thomas Oldham Sr., Thomas |
| Copyright Year | 1993 |
| Description | The Laser Geodynamic Satellite-2 (LAGEOS-2) has undergone extensive optical testing at NASA Goddard Space Flight Center during 1989. The techniques included measuring the far field diffraction pattern using cw and pulsed lasers. In the pulsed measurement technique, response of the satellite was studied by measuring the far-field diffraction pattern (FFDP) as a function of pulsewidth, wavelength, polarization, position in the FFDP, detector/processing techniques, and satellite orientation. The purpose of the pulsed laser testing was two-fold: (1) to characterize the satellite optical response with the detector and signal processing electronics currently used in most SLR stations using the portable laser ranging standard, and (2) to characterize the satellite response for various conditions using the highest bandwidth optical detector (streak camera) available for the next generation of satellite laser ranging (SLR) technology. The portable ranging standard employed multiple measurement devices and an optical calibration scheme to eliminate range-dependent and amplitude-dependent systematics. These precautions were taken to eliminate/minimize instrumental errors and provide maximum accuracy. For LAGEOS orbit (6000 Km), ground stations are located 34 to 38 Mu radians off the axis of the return signal from the satellite; therefore, an optical mask was used to restrict the field of view (FOV) of detection to this annular region of the FFDP. The two measurement techniques were implemented using an aperture sharing scheme and complemented each other by providing mutual verification. |
| File Size | 457440 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940011104 |
| Archival Resource Key | ark:/13960/t5dc2z902 |
| Language | English |
| Publisher Date | 1993-06-01 |
| Access Restriction | Open |
| Subject Keyword | Lasers And Masers Lageos Satellite Streak Cameras Calibrating Satellite Instruments Field of View Pulsed Lasers Ground Stations Rangefinding Diffraction Patterns Satellite Tracking Far Fields Apertures Signal Processing Accident Prevention Geodynamics Continuous Wave Lasers Satellite Orientation Laser Applications Laser Range Finders Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
