ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2018, Vol. 15, No. 2, pp. 42-51

Detection of bridges instability by means of SAR interferometry

L.N. Zakharova 1 , A.I. Zakharov 1 
1 V. A. Kotelnikov Institute of Radioengineering and Electronics RAS, Fryazino Branch, Fryazino, Russia
Accepted: 20.11.2017
DOI: 10.21046/2070-7401-2018-15-2-42-51
The paper focuses on remote sensing of bridges state, including estimation of displacements by means of radar interferometry technique. Ten bridges located in Russia and abroad were selected as test objects for our study. Results of processing Sentinel-1 radar data showed that there was strong decorrelation on the interferograms of four bridges which precludes the estimation of their stability by means of radar interferometry. Stability level of other six bridges of various types (suspension, truss, and girder ones) with lower temporal decorrelation was estimated and analyzed. It was discovered that two Volga River bridges were stable between observations, railway bridge in Murom demonstrated thermal dilation; two suspension bridges above sea straits near Istanbul and San Francisco showed moderate dynamics of explainable mechanical nature. For the Striginsky bridge over Oka River we discovered the possibility of phase measurements in a “ghost image”, which is an outcome of multi-bounce signal scattering from the bridge and water surface, and the results were in agreement with measurements over a standard single-bounce image of the bridge. We processed data acquired under warm/freeze conditions; also we considered a smooth/waved water surface state under bridges as an influential condition for the high multiple-bounce coherence.
Keywords: synthetic aperture radar, differential interferometry, displacement estimation, bridges
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References:

  1. Zakharova L. N., Zakharov A. I., Sorochinskii M. V., Osobennosti radiolokatsionnykh izobrazhenii mostov na primere s”emki Sentinel-1 (Specificity of radar images of bridges: Sentinel-1 case study), Materialy Vseross. nauchn. konf. “Sovremennye problemy distantsionnogo zondirovaniya, radiolokatsii, rasprostraneniya i difraktsii voln” (Proc. All-Russian Conference “Modern Problems of Remote Sensing, Radar, Waves Propagation and Diffraction”), Murom: Izd.-poligr. tsentr MI VlGU, 2017, pp. 222−228.
  2. Zakharova L. N., Zakharov A. I., Osobennosti formirovaniya izobrazheniy mostov na radiolokatsionnyh snimkah (Specificity of bridges appearance on radar images), Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2018, Vol. 15, No. 1, pp. 42–51.
  3. Lavrova O. Yu., Mityagina M. I., Kostianoy A. G., Ledovaya obstanovka v Kerchenskom prolive v teku­shchem stoletii. Retrospektivnyy analiz na osnove sputnikovykh dannykh (Ice conditions in the Kerch Strait in the current century. A retrospective analysis based on satellite data), Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2017, Vol. 14, No. 2, pp. 148–166.
  4. Loupian E. A., Lavrova O. Yu., Mityagina M. I., Kostianoy A. G., Ledovaya obstanovka v raione stroi­tel’stva Krymskogo mosta v fevrale 2017 g. (Ice conditions in the construction area of the Crimean Bridge in February 2017), Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2017, Vol. 14, No. 1, pp. 247–251.
  5. Fornaro G., Reale D., Verde S., Bridge thermal dilation monitoring with millimeter sensitivity via multidimensional SAR imaging, IEEE Geosci. Remote Sens. Lett., 2013, Vol. 10, No. 4, pp. 677−681.
  6. Franceschetti G., Lanari R., Synthetic Aperture Radar Processing, CRC Press, 1999, 324 p.
  7. Kang J., Wang Y., Körner M., Zhu X. X., Object-based InSAR deformation reconstruction with application to bridge monitoring, Proc. of IGARSS-2016, Beijing, China, 2016, pp. 6871−6874.
  8. Lazecky M., Perissin D., Bakon M., de Sousa J. M., Hlavacova I., Real N., Potential of satellite InSAR techniques for monitoring of bridge deformations, Proc. 2015 Joint Urban Remote Sensing Event (JURSE), Lausanne, Switzerland, 2015.
  9. Monserrat O., Crosetto M., Cuevas M., Crippa B., The thermal expansion component of persistent scatterer interferometry observations), IEEE Geosci. Remote Sens. Lett., 2011, Vol. 8, No. 5, pp. 864−868.
  10. Sousa J. J., Bastos L., Multi-temporal SAR interferometry reveals acceleration of bridge sinking before collapse, Nat. Hazards Earth Syst. Sci., 2013, Vol. 13, pp. 659–667.