Accession Number:

ADA090172

Title:

Submillimeter Wave High Resolution Atmospheric Transmission Measurements Study.

Descriptive Note:

Final technical rept. 20 Apr 78-20 Jan 79,

Corporate Author:

BLOCK ENGINEERING INC CAMBRIDGE MA

Personal Author(s):

• Johnson,N. J. E.
• Quinn,T. G. , III
• Kauffman,J.

Report Date:

1978-12-01

Pagination or Media Count:

66.0

Abstract:

The measurement of atmospheric transmission under various weather conditions at submillimeter wavelengths was carried out using an interferometer modulator transmitter and cooled composite bolometer receiver over transmission paths to 100 meters. Measurements were made in the laboratory and outside, with relative humidity to 97. Spectral resolution was better than 0.1 centimeters to -1 power, and spectral range extended from 100 microns to just beyond 1.0 millimeter. Although some channeling was observed in earlier spectra, this effect was removed in later measurements, and data quality is generally excellent. Author

Descriptors:

• *WAVE PROPAGATION
• *SUBMILLIMETER WAVES
• WEATHER
• ATMOSPHERIC SCATTERING
• HIGH RESOLUTION
• SPECTRA
• TRANSMISSION LOSS
• SPECTRORADIOMETERS
• INTERFEROMETERS

Subject Categories:

• Atmospheric Physics
• Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE