Aerospace Instrument-Making Annotation << Back SYNTHESIS AND RESULTS OF NUMERICAL SIMULATION OF A DIGITAL ODOMETER ALGORITHM, BUILT ON A MICROMECHANICAL ACCELEROMETER UNIT A.A. Dzuev, V.V. Tikhomirov, E.V. Babaev, M.V. Konash, A.V. Nekrasov, D.V. Furtas, P.Yu. Kretov The article is devoted to the synthesis of the digital odometer algorithm, based on the micromechanical accelerometer unit (AU), rigidly mounted on the wheel of a ground moving object (GMO). The digital odometer algorithm is synthesized on the basis of two functional circuits – a functional circuit based on a low-pass filter(LPF), which provides the calculation of the relative linear velocity and path using measurements of two accelerometers; functional diagram based on the LPF and the Hilbert digital transformer (HDT), providing the calculation of the relative linear velocity and path using measurements of one or more accelero-meters. In this work, the LPF and HDT necessary for the implementation of the digital odometer algorithm are synthesized. The features and some limitations associated with the use of a HDT in the task of constructing a digital odometer are established. Based on the results of numerical simulation, a comparative analysis of the accuracy characteristics provided by the odometer algorithm, built on the basis of two functional circuits, is carried out – a scheme based on the LPF, a circuit based on the LPF and DHT. Keywords: ground moving object, odometer, micromechanical accelerometer unit, filter with finite impulse response, FIR filter, low-pass filter, LPF, Hilbert integral transform, Hilbert digital transformer, HDT. DOI: 10.25791/aviakosmos.05.2020.1156 Pp. 16-26.