Drone-Borne Differential SAR Interferometry

Author(s):Show less -

Luebeck, Dieter ^[1] ; Wimmer, Christian ^[2] ; Moreira, Laila F. ^{[3, 1]} ; Alcantara, Marlon ^[3] ; Ore, Gian ^[3] ; Goes, Juliana A. ^[3] ; Oliveira, Luciano P. ^[3] ; Teruel, Barbara ^[4] ; Bins, Leonardo S. ^[5] ; Gabrielli, Lucas H. ^[3] ; Hernandez-Figueroa, Hugo E. ^[3]

Affiliation

^[1] Radaz Ind & Comercio Prod Eletron Ltda, BR-12244000 Sao Jose Dos Campos, Jose Dos Campos - Brazil

^[2] Wimmer Consulting, D-84061 Ergoldsbach - Germany

^[3] Univ Estadual Campinas, UNICAMP, Sch Elect & Comp Engn, BR-13083852 Campinas - Brazil

^[4] Univ Estadual Campinas, UNICAMP, Sch Agr Engn, BR-13083852 Campinas - Brazil

^[5] Natl Inst Space Res INPE, BR-12227010 Sao Jose Dos Campos - Brazil

• Document type: Journal article
• Source: REMOTE SENSING; v. 12, n. 5 MAR 2020.
• Web of Science Citations: 5

Abstract

Differential synthetic aperture radar interferometry (DInSAR) has been widely applied since the pioneering space-borne experiment in 1989, and subsequently with the launch of the ERS-1 program in 1992. The DInSAR technique is well assessed in the case of space-borne SAR data, whereas in the case of data acquired from aerial platforms, such as airplanes, helicopters, and drones, the effective application of this technique is still a challenging task, mainly due to the limited accuracy of the information provided by the navigation systems mounted onboard the platforms. The first airborne DInSAR results for measuring ground displacement appeared in 2003 using L- and X-bands. DInSAR displacement results with long correlation time in P-band were published in 2011. This letter presents a SAR system and, to the best of our knowledge, the first accuracy assessment of the DInSAR technique using a drone-borne SAR in L-band. A deformation map is shown, and the accuracy and resolution of the methodology are presented and discussed. In particular, we have obtained an accuracy better than 1 cm for the measurement of the observed ground displacement. It is in the same order as that achieved with space-borne systems in C- and X-bands and the airborne systems in X-band. However, compared to these systems, we use here a much longer wavelength. Moreover, compared to the satellite experiments available in the literature and aimed at assessing the accuracy of the DInSAR technique, we use only two flight tracks with low time decorrelation effects and not a big data stack, which helps in reducing the atmospheric effects. (AU)

• FAPESP's process: 17/19416-3 - Drone-borne radar for sugar cane precision agriculture
• Grantee: Hugo Enrique Hernández Figueroa
• Support type: Research Grants - Research Partnership for Technological Innovation - PITE
• FAPESP's process: 18/00601-8 - Remote sensing radar carried by drone
• Grantee: Dieter Lubeck
• Support type: Research Grants - Innovative Research in Small Business - PIPE