Electrooptical methods to measure distance
Abstract
Electrooptical distance measuring methods are discussed. The measuring principles suppose that at least one of both measuring points moves freely, and do not use mass embodiment. Methods based on the characteristics of electromagnetic waves are satisfactory regarding accuracy, quality of the measuring points, and work. Suitability for distance measurement for triangulation lies in the rectilinear propagation, for the measurement with amplitude modulated light in the constant propagation velocity, for the measurement with interferometers in the interference capability and the constancy of the wavelength, for the pulse time-of-flight method in the constant propagation velocity, for radar measurement in the modulation capability, and for the red shift in the Doppler effect characteristic of electromagnetic waves.
- Publication:
-
In its Measuring Methods Using Optoelectronic Semiconductor Components p 61-81 (SEE N86-14556 05-35
- Pub Date:
- 1985
- Bibcode:
- 1985mmuo.rept...61G
- Keywords:
-
- Electro-Optics;
- Electromagnetic Radiation;
- Optical Range Finders;
- Amplitude Modulation;
- Electromagnetic Properties;
- Laser Interferometry;
- Radar Measurement;
- Red Shift;
- Time Of Flight Spectrometers;
- Triangulation;
- Instrumentation and Photography