Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2022. №7
Contents

Full text in Russian (pdf)

DOI: https://doi.org/10.30898/1684-1719.2022.7.8

TWO-STAGES INTERFERENCE MITIGATION CONCEPT IN APPLICATION TO AUTOMOTIVE RADAR

I.V. Artyukhin ¹, I.M. Averin ¹, A.G. Flaksman ¹,
A.E. Rubtsov ¹, D.D. Bareev ², E.A. Dombrovsky ²

¹ Nizhny Novgorod State University n.a. N.I. Lobachevsky

603950, Nizhny Novgorod, Gagarina ave., 23

² Nizhny Novgorod Research Center, Huawei Technologies Co., Ltd

603006, Nizhny Novgorod, Maxim Gorky street, 117

The paper was received May 20, 2022

Abstract. The present paper is focused on the interference mitigation problem for automotive radars in complex signal-interference-noise environments. Current situations are characterized by the fact that cars can be both sources of reflected signals and at the same time interference. Significant number of cars is equipped with radars of the same type (for example, radars with linear frequency modulated signals and with similar parameters). The concept of a two-stage procedure for interference mitigation is proposed. Adaptive beamforming algorithm that constructs a "nulls" in the antenna pattern in the direction of interference sources is developed for the first stage. The second stage is based on the proposed projection method of interference "subtraction" in the frequency domain to eliminate the beat frequencies of interference signals from the spectrum on the "velocity-range" plane. As an example, it is considered the scenario of five targets and one interference source (one of the targets) with the same parameters (linear frequency modulated radars with the same time duration and bandwidth). Numerical simulation results show the high efficiency of the proposed concept.

Key words: automotive radar, advanced driver assistance system, linear frequency modulated signal, antenna array, signal and interference sources, projection matrix, interference suppression.

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For citation:

Artyukhin I.V., Averin I.M., Flaksman A.G., Rubtsov A.E., Bareev D.D., Dombrovsky E.A. Two-stages interference mitigation concept in application to automotive radar. Zhurnal radioelectroniki [Journal of Radio Electronics] [online]. 2022. №7. https://doi.org/10.30898/1684-1719.2022.7.8 (in Russian)