U.S. Geological Survey Professional Paper, Issue 1390U.S. Government Printing Office, 1987 |
From inside the book
Results 1-5 of 12
Page 38
... laser - beam ( green band , fig . 20 ) path is traced readily from source through transmitter lens assembly , to deflecting mirror , and to deflecting prism centered and cemented on the back side of the objective lens . At this point ...
... laser - beam ( green band , fig . 20 ) path is traced readily from source through transmitter lens assembly , to deflecting mirror , and to deflecting prism centered and cemented on the back side of the objective lens . At this point ...
Page 40
... laser beam meets Federal safety standards in the following man- ner : 1. In the laboratory . - Eye safe for all distances greater than 18 in . ( 0.46 m ) when using a suitable attenu- ation filter and limiting exposure time to a 2 ...
... laser beam meets Federal safety standards in the following man- ner : 1. In the laboratory . - Eye safe for all distances greater than 18 in . ( 0.46 m ) when using a suitable attenu- ation filter and limiting exposure time to a 2 ...
Page 41
... LASER. 18 ) to keep the target image centered in the tracker field of view . The discussion given in the section , " Laser Profiler , " refers to a key mathematical ... LASER BEAM DIVERGENCE ANGLE , a LIGHT PATH INSTRUMENT SYSTEM 41.
... LASER. 18 ) to keep the target image centered in the tracker field of view . The discussion given in the section , " Laser Profiler , " refers to a key mathematical ... LASER BEAM DIVERGENCE ANGLE , a LIGHT PATH INSTRUMENT SYSTEM 41.
Page 42
... LASER BEAM DIVERGENCE ANGLE , a LIGHT PATH IN SPACE ( GEOMETRY ) LASER SOURCE RECEIVER LENS ELECTRO- OPTIC RECEIVER FLOW OF LIGHT ENERGY ( FIRST LAW , THERMODYNAMICS ) ENERGY LEVEL ( LASER SOURCE ) MATHEMATICAL DESCRIPTION Ps ENERGY ...
... LASER BEAM DIVERGENCE ANGLE , a LIGHT PATH IN SPACE ( GEOMETRY ) LASER SOURCE RECEIVER LENS ELECTRO- OPTIC RECEIVER FLOW OF LIGHT ENERGY ( FIRST LAW , THERMODYNAMICS ) ENERGY LEVEL ( LASER SOURCE ) MATHEMATICAL DESCRIPTION Ps ENERGY ...
Page 45
... laser tracker discussion is not complete without a brief description of the physical properties of the glass window ( fabricated more like a large " lens " ) installed in the aircraft cabin floor , through which the laser beam must pass ...
... laser tracker discussion is not complete without a brief description of the physical properties of the glass window ( fabricated more like a large " lens " ) installed in the aircraft cabin floor , through which the laser beam must pass ...
Other editions - View all
Common terms and phrases
acceleration accelerometer accuracy aerial profiling AERIAL SURVEY air loop airborne angular APT sys APT system axes azimuth CALIBRATE AND ALINE commands components Compute IMU CONTROL POINT DeHavilland Twin Otter device Draper Laboratory Earth electrical electronics elevation error field flight mission flight path foregoing function ground-control points gyro Hanscom Field Harry Diamond horizontal IMU and tracker incl inertial measurement unit inertial navigator input axis instrument system intervals Kalman filter keyboard laser beam laser profiler laser tracker latitude magnetic tape mode Model motion mounted newton meter optics orientation orthogonal output performance plasma display position coordinates precession precision printer processor profiling of terrain pulse retroreflector target rotation rotor schematic sequence signal SIXTY SECOND specific force spin axis stable platform subsystems temperature terrain profiles terrain system thermal tion torque motors tracker gimbal angles tracking U.S. Geological Survey update velocity vertical