Estimating Absolute Humidity Using Latency Measurements over CMLs: Challenges, Opportunities and Error Analysis

Gal Leibovitz, Hagit Messer

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In recent years measurements of the attenuation in Commercial Microwave Links (CMLs) have been used for monitoring atmospheric phenomena, and in particular rain and absolute humidity (AH). In this work, we present a method for estimating absolute humidity using measurements of the propagation delay in a CML. Using real data we show that although the refractive index of the propagation channel, which is responsible for the delay, depends on the temperature and barometric pressure as well as on the absolute humidity, measurements of the propagation delay are sufficient for reliable estimation of the absolute humidity even when the corresponding measurements of the temperature and pressure are not provided. Theoretical error analysis of the AH estimates is also presented, showing good agreement with the empirical results.

Original languageEnglish
Title of host publicationConference Record of the 54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020
EditorsMichael B. Matthews
PublisherIEEE Computer Society
Pages623-630
Number of pages8
ISBN (Electronic)9780738131269
DOIs
StatePublished - 1 Nov 2020
Event54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020 - Pacific Grove, United States
Duration: 1 Nov 20205 Nov 2020

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
Volume2020-November
ISSN (Print)1058-6393

Conference

Conference54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020
Country/TerritoryUnited States
CityPacific Grove
Period1/11/205/11/20

Keywords

  • Absolute humidity
  • Commercial microwave links
  • Error analysis
  • Propagation delay
  • Refractive index

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