Methodology for assessing the accuracy of determining the spatial characteristics of local navigation systems

Abstract

In the process of developing and operating navigation systems, it is very important to reliably assess the accuracy of determining spatial characteristics. A methodology has been developed for assessing and confirming the accuracy of determining spatial characteristics by various software and hardware systems, such as coordinates, velocity, and orientation. The basis was taken from the foreign standard ASTM E3064-16, which describes coordinates and orientation accuracy confirmation of optical tracking systems. The developed approach is based on assessing the accuracy of measuring a certain fixed length (rod) in different positions and orientations. The speed accuracy assessment is based on the coordinate accuracy assessment and is based on the use of linear regression to calculate the speed. The error in determining the orientation angle in space is also calculated based on the coordinate measurement error and is given for small angles. The applicability limits of the described methodology are given. The technique makes it possible to assess the accuracy and reliability of navigation and measuring systems.

Keywords

• spatial coordinates, accuracy assessment methods, tests, spatial measurements.