Kosminis Vytis introduces the Single enclosure GNSS/GNSS+INS receivers designed to expand navigation and orientation capabilities for moving objects.
Kosminis Vytis offers multi-constellation multi-frequency the Newton receivers series in multiple hardware and software configurations.
The Newton series includes: Newton-1, Newton-2 and Newton-3 lines, each of which differs in the number of GNSS antenna inputs tailored to different requirements and applications. These receivers are equipped with positioning technologies that offer high precision and accuracy to provide reliable data. The Newton receivers can be supplemented with MEMS to implement Inertial Navigation System (INS). The use of the inertial sensor data fusion algorithms with GNSS data allows to determine the moving object orientation and position during short GNSS
outages (dead reckoning functionality).
For integration into existing equipment, IP67 (enclosure) or OEM (without enclosure) versions are available. The delivered package includes all necessary cables for quickly connecting the receiver(s) to peripheral devices (PC). The GUI provides a software tool for easy setup, configuration, data logging, and viewing.
GNSS measurements include code and carrier phase pseudoranges, SNRs, and Doppler.
Raw IMU data include raw accelerometer, raw gyroscope, and temperature data
Autonomous mode is a basic method of GNSS positioning, also known as standalone, absolute, or SINGLE mode for Position, Velocity, and Time (PVT) calculation. While using this method, the PVT (navigation solution) is obtained without the use of any external data (sources of augmentation or correction). Thus, autonomous GNSS does not depend on receiving data via secondary data channels, making it more reliable and accessible from this perspective.
SBAS mode allows to improve the performance of GNSS receivers (WAAS, EGNOS, GAGAN, MSAS, SDCM and other SBAS-compatible services).
PPP mode is a high-accuracy positioning mode. Current version of RTCM-SSR corrections supports so-called floating PPP, i.e. PPP with float ambiguities. The typical convergence time is between 20-35 minutes. PPP mode requires the use of dual-frequency measurements for estimating the ionospheric delay, thus, the use of dual-frequency antennas is essential for PPP mode. The PPP convergence time depends on the quality of SSR corrections, satellite geometry, and atmospheric conditions. The current version of RTCM SC-104 standard supports only GPS and GLONASS navigation systems.
RTK rover mode is a differential positioning mode that requires a set of measurements received from the reference station (base station). Calculating the differences in measurements between the rover and the reference station allows the rover to effectively reduce the influence of delays associated with the ionosphere and troposphere, as well as eliminate errors related to satellite clocks. The position accuracy achievable by the receiver(s) depends on the baseline length, quality of GNSS measurements received from the reference station, atmospheric conditions, multipath environment, and other factors.
RTK base mode assumes generation of GNSS measurements along with information about coordinates of the reference station and antenna type. In RTK base mode, the reference station generates the following RTCM messages: MSM7, 1005/1006, 1007/1008, 1230.
Multi-constellation and multi-frequency receivers are capable of calculating PVT by receiving satellite signals broadcast by multiple GNSS in multiple frequency bands.
The use of multi-frequency receivers is the most effective way to eliminate ionospheric delay in position computation.
Kosminis Vytis’ multi-constellation receivers have access to signals from GPS, GLONASS, BeiDou, Galileo, and NavIC constellations, as well as SBAS (EGNOS, WAAS, GAGAN, MSAS, etc.). The use of several constellations ensures that a larger number of satellites are visible. If a signal is blocked due to the operating environment, there is a high probability that the receiver can pick up a signal from another constellation, ensuring continuity and reliability of the GNSS solution.
Newton receivers simultaneously use all supported GNSS in the navigation solution and raw measurements collection, additionally allowing the user to enable/disable GNSS constellations for tracking (user-selectable GNSS constellations).
Inertial Navigation System (INS) is used to calculate the Position, Velocity and Orientation of a platform (object).
Kosminis Vytis INS includes two main components: Inertial Measurement Unit (IMU) sensor and computational unit. The IMU is a sensor based on a microelectromechanical system (MEMS) consisting of a 3-axis accelerometer and a 3-axis gyroscope. The computational unit processes raw IMU data. These relative measurements (INS) can accumulate drift errors over time. Therefore, INS is combined with GNSS (GNSS+INS) to provide reliable, highly accurate positioning and orientation (attitude) with high update rates in the most challenging environments, even during GNSS outages.
In Kosminis Vytis GNSS-aided INS receiver(s), GNSS data and IMU data are fused by an Extended Kalman Filter (EKF) using a loosely coupled integration algorithm. User-selectable initialization methods include:
coordinates from the own antenna, velocities considered equal to zero, roll and pitch from the accelerometer, with the course (yaw) determined during operation;
coordinates from the own antenna, velocities considered equal to zero, roll and pitch from the accelerometer, with the course (yaw) provided by the user;
all parameters derived from the user command.
Setting up the inertial receiver(s) is significantly simplified with the Lever Arm functionality.
