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access icon openaccess Spectrum analysis of high-resolution SAR data to obtain Bragg signatures of power cables

This is an open access article published by the IET under the Creative Commons Attribution-NonCommercial-NoDerivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/)
Received 13/12/2017, Accepted 04/04/2018, Revised 29/03/2018, Published 09/04/2018

A spectrum analysis method is presented that can be used on high-resolution synthetic aperture radar (SAR) measurements to concentrate the returns from overhead power cables into discrete angles, alongside the resulting images and information obtained by applying the technique to spotlight SAR data obtained at Ka-band. The angular width and position of the specular and Bragg lobes are used to estimate the periodic length of the cable structure. The results presented also show the potential of detecting variations in the tautness of a power line along its length and hence make any vulnerabilities to the supply of electrical power detectable remotely. Detailed high-resolution images constructed also support peculiarities measured in these signatures. The presented results show that the described method has the ability to detect distribution line vulnerabilities and hazards to the surrounding area. As the cable structure is also related to temperature, this technique has the potential to observe changes in the climate.

Inspec keywords: synthetic aperture radar; radar imaging; power cables; remote sensing by radar

Other keywords: presented results; high-resolution synthetic aperture radar measurements; distribution line vulnerabilities; information; periodic length; discrete angles; specular Bragg lobes; cable structure; power line; spectrum analysis method; resulting images; high-resolution SAR data; overhead power cables; described method; Bragg signatures; detailed high-resolution images; electrical power detectable; angular width position; Ka-band

Subjects: Computer vision and image processing techniques; Instrumentation and techniques for geophysical, hydrospheric and lower atmosphere research; Radar equipment, systems and applications; Optical, image and video signal processing; Other topics in statistics

References

    1. 1)
      • 8. Stevens, M.B., Perks, D.L.: ‘I-Master RADAR: recent trials results’. IET Int. Conf. Radar Systems (Radar 2012), Glasgow, UK, 2012, pp. 1–5.
    2. 2)
      • 2. Al-Khatib, H.: ‘Laser and millimeter-wave backscatter of transmission cables’. Proc. SPIE 0300, Physics and Technology of Coherent Infrared Radar I, San Diego, CA, USA, 1981, p. 212.
    3. 3)
      • 7. Stevens, M., Jones, O., Moyse, P., et al: ‘Bright Spark: Ka-band SAR technology demonstrator’. IET Int. Conf. Radar Systems (Radar 2017), Belfast, UK, 2017.
    4. 4)
      • 3. Sarabandi, K.: ‘Power lines: radar measurement and detection algorithm for polarimetric SAR images’, IEEE Trans. Aerosp. Electron. Syst., 1994, 30, (2), pp. 632–643.
    5. 5)
      • 6. McMillan, R.W.: ‘Terahertz imaging millimeter-wave radar’, Adv. Sens. Secur. Appl., 2006, 2, pp. 243–268.
    6. 6)
      • 4. Sarabandi, K., Park, M.: ‘Millimeter-wave radar phenomenology of power lines and a polarimetric detection algorithm’, IEEE Trans. Antennas Propag., 1999, 47, (12), pp. 1807–1813.
    7. 7)
      • 5. Hayes, C.L., Brandewie, R.A.: ‘Reflection coefficients for wires and cables at 10.6 μm’, Appl. Opt., 1973, 12, (7), pp. 1564–1569.
    8. 8)
      • 10. Proakis, J.G., Manolakis, D.G.: ‘Digital signal processing’ (Prentice-Hall International, Upper Saddle River, NJ, 1996).
    9. 9)
      • 9. Willetts, B., Stevens, M., Stove, A., et al: ‘Overhead power cable Bragg signatures in Ka and Ku band high-resolution SAR imagery’. IET Int. Conf. Radar Systems (Radar 2017), Belfast, UK, 2017.
    10. 10)
      • 1. Willetts, B., Gashinova, M., Stove, A., et al: ‘Low-THz overhead power cable signatures: the effect of surface features on low-THz reflectivities’. 17th Int. Radar Symp. (IRS), Krakow, 2016, pp. 1–6.
http://iet.metastore.ingenta.com/content/journals/10.1049/iet-rsn.2017.0574
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