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Erschienen in: Measurement Techniques 7/2020

25.11.2020 | RADIO MEASUREMENTS

Influence of the Estimation Accuracy of the Frequency Characteristics of Radar Targets on the Results of the Geometric Shape Identification of Local Reflectors

verfasst von: V. V. Neelov, S. E. Shaldaev

Erschienen in: Measurement Techniques | Ausgabe 7/2020

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Abstract

This article discusses the issues of introducing broadband technologies to civil and special-purpose radar systems. The popularity of these technologies in terms of solving numerous practical problems determines the relevance of research related to a detailed analysis of long-range portraits of objects observed at a new qualitative level. Using the results of broadband radar sounding, this study analyzes the influence of the systematic error of the measuring channel on the reliability of the identification of the geometric shape of the local reflectors of observation objects. A broadband radar-measuring channel with a linear frequency modulation of the signal is created on the basis of the generalized heterodyning method. Then, a technique for compensating systematic measurement errors for a given type of channel is proposed using calibration spheres. The systematic error in measuring the frequency characteristics (FCs) of the sphere is estimated, and an error indicator for estimating the FCs of objects is proposed. Furthermore, the dependence of the statistical indicators of the identification results of the geometric shape of local reflectors on the specified indicator is presented. The possibility of identifying the geometric shape of local reflectors through the parameters of their FCs is confirmed experimentally. The results obtained can be used to assess the reliability of the identification of the geometric shape of local reflectors at the calibration stage of the measuring channel and to make a decision on the feasibility of implementing algorithms for the identification of the geometric shape of local reflectors on an existing radiolocation station.
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Metadaten
Titel
Influence of the Estimation Accuracy of the Frequency Characteristics of Radar Targets on the Results of the Geometric Shape Identification of Local Reflectors
verfasst von
V. V. Neelov
S. E. Shaldaev
Publikationsdatum
25.11.2020
Verlag
Springer US
Erschienen in
Measurement Techniques / Ausgabe 7/2020
Print ISSN: 0543-1972
Elektronische ISSN: 1573-8906
DOI
https://doi.org/10.1007/s11018-020-01825-w

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