ISSN 1991-2927
 

ACP № 2 (56) 2019

Pseudogradient Time Shift Estimation of Radio Pulses Received By Spatially Distributed Sensors Using Fpld

Aleksandr Grigorevich Tashlinskii, Ulyanovsk State Technical University, Doctor of Engineering, Professor; graduated from the Faculty of Radioengineering of Ulyanovsk Polytechnic Institute; Head of the Department of Radioengineering at Ulyanovsk State Technical University; an author of articles, monographs, and inventions in the field of digital signal and image processing. [e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. ]A. Tashlinskii,

Mikhail Grigorevich Tsarev, Ulyanovsk State Technical University, Postgraduate Student at Ulyanovsk State Technical University; graduated from the Faculty of Radioengineering of Ulyanovsk State Technical University; an author of articles in the field of digital signal and image processing. [e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. ]M. Tsarev

Pseudogradient Time Shift Estimation of Radio Pulses Received By Spatially Distributed Sensors Using Fpld 000_13.pdf

The authors carried out the analysis of computational complexity and performance of recurrent algorithms for estimation of the difference in arrival times of radio pulses received by spatially distributed sensors such as antenna array elements in case of their realization on field programmable logic devices (FLPD). The algorithms are synthesized on the basis of non-identification pseudogradient adaptation; they do not require any prior assessment of the signal parameters. The algorithms are stable to impulse interference and used under conditions of prior uncertainty. The problem of measuring the time shift is considered as the problem of estimating the parameter of alignment of signals received by different receivers and digitized. The specificity of the algorithms implementation in VHDL in case of concerning mean square frame-to-frame difference as a target function is considered. An implementation of one of the algorithm operations (linear interpolation of discrete signal) on FPLD is shown as an example. The algorithm, the block diagram, the module diagram, and the comparative analysis of the achievable frequency for different types of FPLD are presented in the article.

Digital signal, radiolocation, spatially distributed sensors, time shift, pseudogradient estimation, target function, fpld.

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