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Table 1 SDM Data Types: Describes the standardized types of sensor data recorded in each data log

From: Multi-objective database queries in combined knapsack and set covering problem domains

SDM Data Types

Description

IMU

Inertial Measurement Unit (IMU) delta velocity and delta rotation measurements from the device’s three axis accelerometers and three axis gyroscopes.

Velocity (3D)

3-dimensional velocity

Velocity (1D)

1-dimensional velocity

Speed

Speed as the magnitude of the velocity vector

Altitude

Height above the WGS-84 ellipsoid

GeodeticPosition (3D)

3D WGS-84 GeodeticPosition

ThreeAxisMagnetometer

Measures magnetic field as a 3-dimensional vector

PositionVelocityAttitude

Includes position, velocity, rotation, and uncertainty

OpticalCameraImage

Image from an optical camera

GNSS

Raw measurements from a Global Navigation Satellite System (GNSS) receiver

GPSEphemeris

Ephemeris describing GPS satellite locations.

SensorRegistrationAck

Message to register sensor

non_SDM_Message

Lightweight Communications and Marshalling (LCM) message is not an SDM data type

  1. A new table is created for each data type and for each data log. The IMU table, for instance, would have 430 Million rows for the 1000 mission database if they were not split between tables