PLoS ONE (Jan 2021)

Analysis and correction of meteorological disturbance observed by ground radars in complex environment.

  • Jijun Wang,
  • Xiao Zhou,
  • Songlin Yu,
  • Bingzhen Li,
  • Yan Li

DOI
https://doi.org/10.1371/journal.pone.0258168
Journal volume & issue
Vol. 16, no. 10
p. e0258168

Abstract

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Ground radar interferometry technology, as a new tool for active remote sensing, has been widely used in the detection of a variety of targets, including landslides, bridges, mines, and dams. This technique usually employs a continuous observation mode with no space baseline. The detection accuracy is mainly affected by meteorological disturbances and noise in the observation environment. In a complex observation environment, meteorological disturbances can lead to phase errors of 10 mm or more, and the effects are different in the range and azimuth directions; this can seriously affect the accuracy of the measurement. In this paper, we analyze the spatial distribution of the phase of meteorological disturbances based on radar monitoring experiments in a complex environment, and propose a correction method that reduces the atmospheric disturbance phase to less than 0.6 mm and effectively improves radar observation accuracy.