FIELD TESTS OF GAS LASER OPTICAL RANGEFINDERS,
Abstract
The standard measurements program consisted of four observations of the minimum intensity of the signal. In order to compare signal display methods, each reading was made manually and by automatic modulation frequency control. Frequency modulation readings were made in 4 seconds during both manual and automatic operation, irrespective of the distance measured. During the tests, the SVV-1 range-finder reflector system with a 30 in. divergence angle was used. Distances greater than 15 km were measured using two stacked reflectors. The distance measurements were checked on two base-lines 5.9 and 15.8 km long, respectively. The shorter base line was additionally measured by breakdown into several parts. The results of the control measurements over lines of varying lengths and at different hours are given in tabular form. The difference in the results between the manual and automatic measurement value over the 5 - 9 km base-line is significant (17 mm). This may be due to errors in the readout of the minimum signal intensity on the automatic mode. An analysis of measurement data indicates that the use of a laser combined with an interference light filter in the receiver permits wider use of the instrument for daylight measurements. Distances up to 20 km were measured during sunny days. The light filter pass band was 80A with a transmission coefficient of 0.3 at maximum response. The use of laser range-finders for measurements of distances shorter than 10 km permits their utilization during the most adverse weather conditions. A laser light source makes it possible to increase the nighttime range of the instrument to 30 km. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 19, 1968
- Accession Number
- AD0685509
Entities
People
- A. S. Maslenikov
- A. V. Gordeev
- E. P. Ostanpchenko
- V. A. Perebyakin
- V. F. Khomaza
Organizations
- National Air and Space Intelligence Center