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Introduction

The VN-200 is a miniature high-performance GPS-Aided Inertial Navigation System that combines MEMS inertial sensors, a high-sensitivity GPS receiver, and advanced Kalman filtering algorithms to provide optimal estimates of position, velocity, and orientation for industrial applications.

GPS / INS Kalman Filter

The VN-200 incorporates the latest advancements in Aerospace grade Kalman filter inertial navigation algorithms specifically tailored to solve problems typically faced by industrial users.

Industrial control applications require high accuracy low latency position, velocity, and attitude measurements. GPS provides long-term position accuracy, but is incapable of providing low-latency high bandwidth measurements. Inertial sensors provide high bandwidth acceleration and angular rates, but cannot provide long-term position and orientation accuracy due to drift and integration errors. Utilizing an onboard Extended Kalman Filter the VN-200 is capable of combining in an optimal manner the high bandwidth inertial measurements with the high accuracy low bandwidth GPS measurements. The VN-200 provides industrial users with access to a continuous stream of low latency high accuracy position velocity and attitude measurements at a rate of up to 200Hz.

GPS/INS Kalman Filter Graph
Diagram

10-Axis MEMS IMU

Utilizing the latest advancements in MEMS technology, the VN-200 incorporates a wide assortment of inertial sensors including a 3-axis accelerometer, 3-axis gyroscope, 3-axis magnetometer, and a barometric pressure sensor. The VN-200 has been carefully designed to provide the highest performance achievable, by eliminating common error sources such as sensitivity to supply voltage variations and temperature dependent hysteresis. To provide the highest level of accuracy, each VN-200 is individually tested and characterized over the full operating temperature range to determine the bias, sensitivity and cross-axis alignment for each individual sensor. Calibration coefficients are stored on the sensor and are fully temperature compensated in real-time onboard to ensure high accuracy measurements over the full operating temperature range.

High Sensitivity GPS Receiver

The VN-200 incorporates an onboard high sensitivity 50-channel u-blox GPS module. A MCX connector is provided for connection to an external active antenna.

Receiver Type: 50-channel u-blox GPS L1 C/A
Update Rate: 5 Hz
Sensitivity: -159 dBm Tracking
Cold Start: 27s

Small Form Factor

The VN-200 is the smallest, lightest, and lowest power GPS/INS available on the market. The sensor package and all electronics are housed in a rugged aluminum enclosure. Precision alignment holes are provided to ensure accurate installation. A 10-pin locking connector is used to provide a reliable connection in severe high vibration or shock conditions.

VN-100 Rugged Deminsions