U.S. Geological Survey Professional Paper, Issue 1390U.S. Government Printing Office, 1987 |
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Results 1-5 of 14
Page
... optics and some electronics for the laser profiler 38. Analysis of the range equation for the laser profiler --- 39. Photograph showing color television camera for the aerial profiling of terrain system 40. Photograph showing video ...
... optics and some electronics for the laser profiler 38. Analysis of the range equation for the laser profiler --- 39. Photograph showing color television camera for the aerial profiling of terrain system 40. Photograph showing video ...
Page 5
... optics . Each review session featured an informal , but detailed , exchange of ideas , identification of problem areas , and discussion of the most promising avenues for resolution . On - the - spot WORK TASKS ENGINEERING decisions ...
... optics . Each review session featured an informal , but detailed , exchange of ideas , identification of problem areas , and discussion of the most promising avenues for resolution . On - the - spot WORK TASKS ENGINEERING decisions ...
Page 38
... optics is shown in figure 20. From this layout , the 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 ...
... optics is shown in figure 20. From this layout , the 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 ...
Page 41
... optics , T2 = transmission coefficient , receiver optics , p = reflection coefficient , retroreflector , A1 = area , retroreflector , ( 3 ) A2 = area , light beam " footprint " at retroreflec- A2 tor , A3 area , receiver lens , A4 area ...
... optics , T2 = transmission coefficient , receiver optics , p = reflection coefficient , retroreflector , A1 = area , retroreflector , ( 3 ) A2 = area , light beam " footprint " at retroreflec- A2 tor , A3 area , receiver lens , A4 area ...
Page 42
... OPTIC RECEIVER FLOW OF LIGHT ENERGY ( FIRST LAW , THERMODYNAMICS ) ENERGY LEVEL ( LASER SOURCE ) MATHEMATICAL DESCRIPTION Ps ENERGY LEVEL ( RECEIVER ) SIGNAL LOSS ( TRANSMITTER OPTICS ) SIGNAL LOSS ( RECEIVER OPTICS ) SIGNAL ATTENUATION ...
... OPTIC RECEIVER FLOW OF LIGHT ENERGY ( FIRST LAW , THERMODYNAMICS ) ENERGY LEVEL ( LASER SOURCE ) MATHEMATICAL DESCRIPTION Ps ENERGY LEVEL ( RECEIVER ) SIGNAL LOSS ( TRANSMITTER OPTICS ) SIGNAL LOSS ( RECEIVER OPTICS ) SIGNAL ATTENUATION ...
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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