By Topic

The slant path atmospheric refraction calibrator: an instrument to measure the microwave propagation delays induced by atmospheric water vapor

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Walter, S.J. ; Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA ; Bender, P.L.

The Slant Path Atmospheric Refraction Calibrator (SPARC) has been developed to measure the water-vapor-induced propagation delay experienced by a radio signal traversing the atmosphere. SPARC measures the difference in the travel times between an optical and a microwave signal propagating along the same atmospheric path. Since the refractivity of dry air is similar for both the microwave and optical signals, the difference in arrival times is a sensitive measure of the water-vapor-induced microwave delay. The instrument is capable of measuring the difference in the optical and microwave travel times with an accuracy of 15 ps or better. SPARC was developed to provide an accurate, independent method for evaluating other techniques used to determine the atmospheric water-vapor-induced delay

Published in:

Geoscience and Remote Sensing, IEEE Transactions on  (Volume:30 ,  Issue: 3 )