The paper presents a sensor fusion module based on Error State Kalman Filter (ESKF) for land vehicle localization using inertial MEMS and odometry. fuses inputs from the Inertial Measurement Unit (IMU), On-Board Diagnostics (OBD), GNSS to provide trajectory estimate in real-time. Based multiple field tests mean circular error was 30 meters after 16 minutes of drive without signal (or 7 centimeters seconds) with average speed 11 per second, which agreement theoretical IMU 1 °/hr bias instability.

The concept of microscale fluidic pump based on microchannel with surface acoustic waves (SAWs), propagating along one its walls, has been extensively studied in the last decade possible application to lab-on-chip projects. Meanwhile, any mentions such device gas medium seem absent literature. present paper aims fill this gap by investigating possibility using SAWs as a pump. numerical study is performed modification direct simulation Monte Carlo method. It was shown that pumping effect...

This article continues our cycle devoted to comprehensive investigation of the diatomic molecule collision process. In this paper, we focus particularly on in-depth study rotational–translational (R–T) energy exchange process and Borgnakke–Larsen (BL) model used in direct simulation Monte Carlo method. The present study, which was performed several levels description (molecular, microscopic, macroscopic), is based mainly highly detailed dataset (around 1011 configurations) binary N2–N2...

Recently, it was shown that traveling surface acoustic waves (SAWs) can affect gas flow in microchannels. The effect of SAWs studied free-molecular regime, and induce separation mixtures. In the present work, this is for denser regimes, which are more interesting from a practical point view. problem numerically using own modification direct simulation Monte Carlo method on example neon–argon mixture. main finding still enhance mixtures outflowing into vacuum through microchannel under all...

This paper studies a rotational relaxation process in nitrogen. A series of more than 200 × 106 classical trajectory calculations (CTCs) collisions nitrogen molecules were carried out. Based on the CTC results, collision model accounting for was proposed and used three-dimensional event-driven molecular dynamics simulation free jet expansion. It shown that parameterized by CTCs can produce results good agreement with existing experimental measurements.

The present paper studies the separation phenomenon for argon–helium mixture outflowing through a convergent–divergent micronozzle into vacuum. We numerically investigate effect of geometrical parameters and gas rarefaction (Knudsen number is varied in range ≈0.01−100). Simulations were performed using event-driven molecular dynamics method. Performed analysis revealed several interesting important features process. First, it was shown that problem results mainly from lateral component,...

The time-dependent flow of a neon–argon mixture in microchannel interrupted by row oscillating barriers is numerically studied using the Direct Simulation Monte Carlo method range Knudsen numbers from 0.1 to 10 and wide oscillation frequencies. emphasis study on effect separation. It demonstrated that addition mid-frequency (“resonance”) regime, as discovered author's previous works [Kosyanchuk et al., “Numerical simulation novel gas separation with series barriers,” Microfluid. Nanofluid....

The constantly growing industry of indoor navigation employs a variety approaches, including Wi-Fi/Bluetooth received signal strength (RSS), smartphone internal sensors (accelerometer, gyroscope, magnetometer) and constructing digital building maps. However, none these methods can avoid the time-consuming system implementation required for radio maps signals. In this paper we propose new method designed to significantly reduce deployment stage through combining mapping (SLAM) technique with...

Indoor positioning using wireless signal strength has become an area of highly active research. Many papers prior to this one have demonstrated how Gaussian processes can be used generate a likelihood model for measurements. One advantage is the ability efficiently calibrate devices by SLAM technique. However, process is, default, zero mean process, which doesn't reflect true nature propagation. In many works, algorithms are modified use constant, non-zero offset. There also modification...