Remote Sensing (Feb 2020)

Crop Growth Monitoring with Drone-Borne DInSAR

  • Gian Oré,
  • Marlon S. Alcântara,
  • Juliana A. Góes,
  • Luciano P. Oliveira,
  • Jhonnatan Yepes,
  • Bárbara Teruel,
  • Valquíria Castro,
  • Leonardo S. Bins,
  • Felicio Castro,
  • Dieter Luebeck,
  • Laila F. Moreira,
  • Lucas H. Gabrielli,
  • Hugo E. Hernandez-Figueroa

DOI
https://doi.org/10.3390/rs12040615
Journal volume & issue
Vol. 12, no. 4
p. 615

Abstract

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Accurate, high-resolution maps of for crop growth monitoring are strongly needed by precision agriculture. The information source for such maps has been supplied by satellite-borne radars and optical sensors, and airborne and drone-borne optical sensors. This article presents a novel methodology for obtaining growth deficit maps with an accuracy down to 5 cm and a spatial resolution of 1 m, using differential synthetic aperture radar interferometry (DInSAR). Results are presented with measurements of a drone-borne DInSAR operating in three bands—P, L and C. The decorrelation time of L-band for coffee, sugar cane and corn, and the feasibility for growth deficit maps generation are discussed. A model is presented for evaluating the growth deficit of a corn crop in L-band, starting with 50 cm height. This work shows that the drone-borne DInSAR has potential as a complementary tool for precision agriculture.

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