Algorithm for dynamic processing of radar signals based on partial correlation of modulating sequences

Аuthors

Meleshin Y. M.

National Research University of Electronic Technology "MIET", 1, Shokin Square, Zelenograd, Moscow, 124498, Russia

e-mail: i@imym.ru

Abstract

The paper presents the results of studying the algorithm for dynamic processing of radar signals based on partial correlation of modulating sequences and construction of an aggregation tree of the spatial ambiguity function in MIMO radars. In MIMO radars with code division of transmitting channels, an orthogonal sequence with respect to the others is emitted from each of the transmitters. The proposed algorithm consists in using sufficiently long sequences (corresponding to the full probing time in the time domain), which allows already in the computing device after recording the entire probing cycle at the stage of digital signal processing to calculate the lower level of the aggregation tree of the spatial ambiguity function due to partial cross-correlation, then by simple calculations using only addition operations to construct a complete aggregation tree. It is shown how processing a complete aggregation tree opens up new possibilities in terms of dynamic processing of target information and allows flexible adjustment of processing to specific radar operating modes.

Keywords:

MIMO radar, code division, virtual antenna array, clutter cancellation, partial cross-correlation, radar, aggregation tree

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