Laser-based remote measurement of large biaxial deflections
Abstract
A laser-based displacement measurement package is being developed as a tool for continuous, remote monitoring of the dynamic response of slender, very low frequency (VLF) antenna towers. The displacement monitor is designed for use where instrumentation cables are prohibitive due to intense electric fields. The system has been tested on antenna towers 380 meters in height to obtain biaxial displacement with a single sensor. Examples of results are presented with comparisons of results from velocity gages and accelerometers.
- Publication:
-
Technical Note
- Pub Date:
- July 1978
- Bibcode:
- 1978ncel.rept.....W
- Keywords:
-
- Laser Applications;
- Radiation Measurement;
- Radio Antennas;
- Very Low Frequencies;
- Communication Cables;
- Deflection;
- Guy Wires;
- Measuring Instruments;
- Remote Sensors;
- Towers;
- Lasers and Masers