Щодо можливості порушень роботи акселерометрів навігаційної системи БПЛА противника зовнішнім вібраційним впливом

Dmytro Kucher; Roman Pashynskyi

doi:10.34169/2414-0651.2026.2(50).53-58

On the possibility of disrupting adversarial UAV navigation system accelerometers via external vibrational impact

Authors

Dmytro Kucher Institute of Naval Forces National University «Odessa Maritime Academy»
Roman Pashynskyi Institute of Naval Forces National University «Odessa Maritime Academy»

DOI:

https://doi.org/10.34169/2414-0651.2026.2(50).53-58

Keywords:

UAV, MEMS accelerometer, inertial navigation system, vibrational disruption, resonance, LRAD, non-kinetic countermeasure, Shahed-136, output biasing, positioning error

Abstract

The purpose of this article is the theoretical analysis and mathematical modelling of physical mechanisms behind the disruption of MEMS accelerometers in UAV inertial navigation systems under external resonant vibrational excitation in conditions where GNSS signals are suppressed by electronic warfare means. The methodology is based on dynamic modelling of the MEMS accelerometer as a second-order oscillatory system and transfer function analysis in the frequency domain. It is demonstrated that excitation at sensor resonant frequencies (2–30 kHz, typical for ADXL, MPU, ICM series) causes two types of disruption: output biasing (a constant or slowly varying zero offset) and output control (controlled signal distortion). The positioning error of the UAV is shown to grow quadratically over time, reaching 50–900 m within 30–120 s of autonomous flight. An analysis of vibration energy propagation through the UAV airframe confirms that external excitation can effectively reach the IMU without direct contact with the source. The practical feasibility of using Long Range Acoustic Devices (LRAD, sound pressure level ≥ 102.5 dB at 100 m) as an asymmetric non-kinetic countermeasure is substantiated. Differentiated effectiveness is established: high (70–90 %) against small FPV systems; moderate (30–60 %) against kamikaze UAVs; low-to-moderate (10–50 %) against large long-range platforms such as Shahed-136. Vibrational disruption is concluded to be a cost-effective non-kinetic complement to layered air defence, particularly against GNSS-independent autonomous platforms.

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Author Biography

Dmytro Kucher , Institute of Naval Forces National University «Odessa Maritime Academy»

Doctor of Technical Sciences, Professor

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