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A Prototype Optical Tracking System Investigation and Development - page 32 / 170

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18

Design Overview

Volume of operation

Description

The volume in which the tracker can operate.

Value 3m × 3m × 3m

Positional accuracy

The positional accuracy expressed as one standard deviation of a sample of data points.

0.8 mm

ngular accuracy Positional resolution

The angular accuracy.

The resolution of the position output.

0.15 5 µm

ngular resolution

The resolution of the orientation output.

0.025

Tracking latency

The latency of the system measured from a discrete movement by an operator until a new pose estimate is made.

50 ms

Update rate

The rate at which the system makes pose estimates.

60 Hz

Size

The maximum dimensions of the tracker. The prototype that was built is based around a fiber glass enclosure that is not spherical and accommodates only three modules.

0.1 m diameter sphere

Weight

The weight of the entire tracker.

500 g

Temperature range

range of temperatures that the scanner can operate in at the accuracy specified.

5 - 35C

Humidity

The percentage relative humidity.

Non-condensing

Table 2.1 The desired parameters of the tracking system are shown here. The prototype produced will aim to meet a subset of these parameters. This will not include the accuracy specification as system calibration is not considered.

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