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An updated model for millimeter wave propagation in moist air
Abstract
A practical atmospheric Millimeter‐Wave Propagation Model (MPM) is formulated that predicts attenuation, delay, and noise properties of moist air for frequencies up to 1000 GHz. Input variables are height distributions (0–30 km) of pressure, temperature, humidity, and suspended droplet concentration along an anticipated radio path. Spectroscopic data consist of more than 450 parameters describing local O 2 and H 2 O absorption lines complemented by continuum spectra for dry air, water vapor, and hydrosols. For a model (MPM*) limited to frequencies below 300 GHz, the number of spectroscopic parameters can be reduced to less than 200. Recent laboratory measurements by us at 138 GHz of absolute attenuation rates for simulated air with water vapor pressures up to saturation allow the formulation of an improved, though empirical water vapor continuum. Model predictions are compared with selected (2.5–430 GHz) data from both laboratory and field experiments. In general, good agreement is obtained.
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Cited by
Terahertz time-domain spectroscopy of water vapor
van Exter, M., Fattinger, C., & Grischkowsky, D. (1989) · Optics Letters · doi:10.1364/ol.14.001128 · Cited by 862
A well‐calibrated ocean algorithm for special sensor microwave / imager
Wentz, F. J. (1997) · Journal of Geophysical Research: Oceans · doi:10.1029/96jc01751 · Cited by 837
Metadata
- Authors
- Liebe, H. J.
- Venue
- Radio Science
- Publisher
- American Geophysical Union (AGU)
- Published
- 1985-09
- Volume
- 20
- Issue
- 5
- Pages
- 1069-1089
- ISSN
- 0048-6604 (ISSN-L)
- 1944-799X
- OpenAlex
- W2164638637
- Cited by
- 510
- References
- 0
- FWCI
- 45.07
- Type
- journal article
- Language
- en
- Open access
- closed
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- Liebe, H. J. (1985). An updated model for millimeter wave propagation in moist air. Radio Science. https://doi.org/10.1029/rs020i005p01069
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