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Determination of the Spatial Resolution of Radar Images in Remote Sensing of the Earth

https://doi.org/10.32603/1993-8985-2021-24-3-72-80

Abstract

Introduction. The analysis of the current state and prospects of space-based radar surveillance tools is important for determining their functions in global aerospace information systems, which aim to monitor air and space, as well as the Earth's surface. Radar surveillance information is used for the purposes of economic analysis, environmental monitoring, mineral search, emergency monitoring, detection and recognition of specified object s at sea and on land, as well as for ensuring national security. In this regard, it is of relevance to develop methods for preliminary assessment of the resolution capacity of novel high-precision onboard radar systems installed on a spacecraft, considering their main technical characteristics, the parameters of the spacecraft movement and the influence of the atmosphere. A priori estimation of spatial resolution values requires a method for calculating the corresponding indicators meeting the required quality of the synthesized radio holograms.
Aim. To derive mathematical dependencies and logical rules allowing a priori estimation of the spatial resolution of radar images obtained by the onboard equipment of a radar complex.
Materials and methods. Analytical methods were used to determine the resolution error of onboard radar systems with a synthesized aperture in the lateral (azimuthal) direction and range, as well as the theory of radar signal processing.
Results. A comparison of the experimental and analytical data on the resolution capacity of an actual radar system confirmed the validity on the proposed method. The developed methodology was used to determine the procedure of calculating the error when estimating the resolution capacity in terms of azimuth and range.
Conclusion. The proposed method can be used for both designing novel radar systems and comparing existing radar complexes, depending on the resolution requirements.

About the Authors

S. N. Gusev
A. F. Mozhaisky Military Space Academy
Russian Federation

Sergey N. Gusev, Cand. Sci. (Eng.) (2019), Нead of the laboratory. Author of more than 20 scientific and educational publications. Area of expertise: electronic warfare and radiolocation systems.

13 Zhdanovskaya St., St Petersburg 197198



S. V. Zhuravlev
A. F. Mozhaisky Military Space Academy
Russian Federation

Sergey V. Zhuravlev, Cand. Sci. (Eng.) (1993), Senior Researcher (2000). Author of more than 20 scientific and educational publications, 14 author’s certificates and patents. Area of expertise: digital signal processing and navigation systems.

13 Zhdanovskaya St., St Petersburg 197198



A. V. Popov
A. F. Mozhaisky Military Space Academy
Russian Federation

Anatolij V. Popov, Cand. Sci. (Eng.) (1989), Senior Researcher (1998). Author of more than 30 scientific and educational publications, 7 author’s certificates and patents. Area of expertise: digital signal processing and radiolocation systems.

13 Zhdanovskaya St., St Petersburg 197198



References

1. Skolnik M. I. Radar Handbook, Third Edition. Ed. 2. tr. from eng. V. S. Verbi. М., Tehnosfera, 2015, 680 p. (In Russ.)

2. Svistov V. M. Radar signals and their processing. M., Sov. Radio, 1977, 448 p.

3. Space-based earth survey radar systems. Ed. by V. S. Verba. M., Radio Engineering, 2010, 680 p.

4. Shirman Ya. D., Losev Yu. I., Minervin N. N. etc.; edited by Ya. D. Shirman. Radioelectronic systems: fundamentals of construction and theory: reference. M., ZAO "MAQUIS", 1998, 828 p.

5. Modern radar. Trans. from English. Ed. by Yu. B. Kobzarev. M., Sov. radio, 1969, 704 p.

6. The radar system of air reconnaissance, the interpretation of radar images. Ed. by L. A. Shkolny. M., ed. VVIA im. prof. N. E. Zhukovsky, 2008, 513 p.

7. Radio vision. Radar systems for remote sensing of the Earth. Ed. by G. S. Kondratenkov. M., Radio Engineering, 2005, 368 p.

8. Aviation radio vision systems. Ed. by G. S. Kondratenkov. M., Radio Engineering, 2015, 648 p.

9. Vinokurov V. I., Genkin V. A., Kalenichenko S. P. Morskaya radolokatsiya. ed. V. I. Vinokurov. L., Sudostroenie, 1986, 256 p.

10. Paduan J. D., Washburn L. High-Frequency Radar Observations of Ocean Surface Currents. Annual Review of Marine Science. 2012, vol. 5, iss. 1, pp. 115-136. doi: 10.1146/annurev-marine-121211-172315

11. Korn G., Korn T. Handbook of Mathematics for researchers and engineers. Definitions, theorems, formulas. under the general editorship of I. G. Aramanovich. M., Nauka, 1974, 831 p. (accessed 22.06.2020)

12. Antipov V. N., Goryainov V. E., Kulin A. N. et al. Radar stations with digital synthesis of the antenna aperture; ed. by V. T. Goryainov M., Radio and Communications, 1988, 304 p.

13. Konovalov A. A. Fundamentals of trajectory processing of radar information. Part 1. St Petersburg, Publishing House of SPbGETU "LETI", 2013. 164 p.

14. Kudryashkin I. F., Likhachev V. P. Space radar imagery of the earth's surface in the presence of noise. Voronezh, Nauchnaya kniga, 2014. 460 p.

15. Zanin K. A. Analysis of the quality of the coordinate reference of images of a space radar with a synthesized aperture. Bulletin of the S. A. Lavochkin NGO. 2013, no. 4, pp. 34-39.


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For citations:


Gusev S.N., Zhuravlev S.V., Popov A.V. Determination of the Spatial Resolution of Radar Images in Remote Sensing of the Earth. Journal of the Russian Universities. Radioelectronics. 2021;24(3):72-80. (In Russ.) https://doi.org/10.32603/1993-8985-2021-24-3-72-80

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ISSN 1993-8985 (Print)
ISSN 2658-4794 (Online)