ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2017, Vol. 14, No. 5, pp. 103-112

A study of accuracy of single-pass interferometric synthetic aperture radar with front-side view for measuring the Earth’s surface

P.E. Shimkin 1 , M.I. Babokin 2 , A.I. Baskakov 1 
1 National Research University "MPEI", Moscow, Russia
2 JSC Aerocon, Zhukovsky, Russia
Accepted: 01.06.2017
DOI: 10.21046/2070-7401-2017-14-5-103-112
This work is devoted to the study of real accuracy of surface topography measurement with the help of single-pass interferometric system of Earth Remote Sensing (ERS) by example of an airborne synthetic aperture radar (SAR). The interferometric SAR (InSAR), which is concerned in this work, allows operational evaluation of the terrain in one pass of the SAR carrier without employment of the second receiving antenna. Algorithmic implementation of interferometric signal processing is described, its verification and debugging are carried out by real SAR raw data, which are recorded onboard of an aircraft during test flights. The feature of interferometric processing in this InSAR design is the possibility to use one enlarged synthetic aperture interval splitted into subintervals for the organization of interferometric measurements. Due to this approach there is a possibility to vary the interferometer base during digital signal processing. It allows to obtain information on the accuracy of terrain measurements depending on interferometer base and choose an optimal baseline with minimum root-mean square error of the terrain by studying the correlation coefficient of a pair of single look complex (SLC) images. Visual comparison of the obtained terrain 3D-images with the data from Google Earth is performed. The applicability of the proposed single-pass InSAR design in obtaining digital terrain models is demonstrated.
Keywords: single-pass interferometric SAR, correlation coefficient, digital terrain model, three-dimensional image
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  1. Babokin M.I., Efimov A.V., Karpov O.A., Titov M.P., Odnoprokhodnyi interferometr pri perednebokovom obzore (Single-pass interferometer with anterolateral review), Radiotekhnika, 2014, No. 7, pp. 16–20.
  2. Babokin M.I., Tolstov E.F., Fazovoe portretirovanie v mnogokanal’nykh RSA (Phase portraits in multi-channel SAR), VI Vserossiiskie Armandovskie chteniya: Radiofizicheskie metody v distantsionnom zondirovanii sred, Materialy VII Vserossiiskoi nauchnoi konferentsii (6th All-Russia Armands Readings, Proc. 7th All-Russia Science Conference), Murom, 31 May – 2 June 2016, Murom: Poligraficheskii tsentr MI VlGU, 2016, pp. 287–297.
  3. Baskakov A.I., Shimkin P.E., Issledovanie potentsial’noi tochnosti opredeleniya mestnogo rel’efa aviatsionnym interferometricheskim RSA pri perednebokovom obzore (Potential accuracy of estimation of a local relief research by interferometric SAR aircraft in along track review), Radiotekhnika, 2013, No. 10, pp. 71–74.
  4. Baskakov A.I., Shimkin P.E., Sravnenie tochnostnykh kharakteristik dvukh sposobov postroeniya aviatsionnykh interferometricheskikh RSA (Comparison of accuracy characteristics of the two ways to build aircraft interferometric SAR), Mezhdunarodnyi nauchnyi zhurnal Al’ternativnaya energetika i ekologiya, 2015, No. 22, pp. 77–83.
  5. Shimkin P.E., Imitatsionnaya model’ odnoprokhodnogo RSA interferometra perednebokovogo obzora (Simulation model for one-pass SAR interferometer of anterolateral survey), Radiotekhnicheskie i telekommunikatsionnye sistemy, 2016, No. 4, pp. 17–25.
  6. Shimkin P.E., Baskakov A.I., Babokin M.I., Eksperimental’naya otrabotka algoritmov otsenivaniya rel’efa s pomoshch’yu odnoprokhodnogo perednebokovogo RSA interferometra (Experimental processing of the relief assessment algorithms by a single-passed interferometric SAR with front-side view), VI Vserossiiskie Armandovskie chteniya: Radiofizicheskie metody v distantsionnom zondirovanii sred (6th All-Russia Armands Readings), Materialy VII Vserossiiskoi nauchnoi konferentsii (Proc. 7th All-Russia Science Conference). Murom, 31 May — 2 June 2016, Murom: Poligraficheskii tsentr MI VlGU, 2016, pp. 244–250.
  7. Bamler R., Hartl P., Synthetic aperture radar interferometry, Inverse Problems, 1998, Vol. 14, No. 4, pp. R1–R54.
  8. Melvin W.L., Sheer J.A., Interferometric SAR and Coherent Exploitation, Principles of modern radar: advanced techniques, SciTech Publishing. Edison, NJ, 2013, pp. 337–398.
  9. Rodriguez E., Martin J.M., Theory and design of interferometric synthetic aperture radars, IEE Proceedings, 1992, Vol. 139, No. 2, pp. 147–159.