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How Whereis maps Australia

We take an in-depth look at Whereis' latest generation of mapping vehicle, which will update the map data that's powering many in-car and portable navigation systems.

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Derek Fung
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1 of 11 Whereis

Dingo

We take an in-depth look at Whereis' latest generation of mapping vehicle, which will update the map data that's powering many in-car and portable navigation systems.

A few weeks back, we spotted a vehicle bedecked in Whereis' livery near our office. Turns out the car we spotted was one of two next-generation mapping vehicles that the company is using to update and refine its Australian maps.

All up, the permanent Whereis fleet consists of eight to nine vehicles. The car we spotted (also pictured above) is dubbed Dingo, while the car featured in the rest of this gallery had yet to be christened.

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2 of 11 Derek Fung/CNET Australia

Up high

Atop the Nissan Patrol are five security-style cameras (three facing forward and two looking aft, out of the photo), a GPS receiver (dome on the right) and a satellite phone antenna (left).

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3 of 11 Derek Fung/CNET Australia

Smile!

A panoramic view in the direction of travel is provided by the three forward facing (left, right and centre) cameras. They're used to capture lane data (centre lines, guidance info, type and so forth), as well as signposts, point-of-interest data and, in some circumstances, data for 3D landmarks and city modelling.

The two rearward facing cameras (left and right only) are used to capture signage in the opposite direction, allowing the relevant data for single carriageways to be captured in one pass.

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4 of 11 Derek Fung/CNET Australia

Plenty of Zs

The differential GPS antenna (above) combined with inertia sensors, distance measuring equipment and gyroscopes allows the car to record its position in all three axes, as well as road inclination — even in areas with obscured GPS tracking, such as the CBD, or where there's no satellite line of sight, like inside a tunnel. Differential GPS alone can yield fairly accurate X and Y coordinates, and a coarse Z reading.

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5 of 11 Derek Fung/CNET Australia

Eye in the sky

The car's cameras aren't the only source of visual information used by Whereis. The company also uses aerial and satellite photography that's accurate down to 7.5cm.

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6 of 11 Derek Fung/CNET Australia

Rack 'em up

All of the car's cameras and positioning equipment feeds into this rack in the Patrol's boot. There's four terrabytes of storage on-board and when the field crew return from a mapping mission, the data is given over to Whereis' production group which, the company claims, has in excess of 100 staff.

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7 of 11 Derek Fung/CNET Australia

Of guns and gyros

The car's GIPSITRAC gyro system is of military grade precision, so the Australian Road Research Board (ARRB) required federal government permission to sell the system to Whereis. GIPSITRAC, incidentally, stands for Global-Inertial Positioning Systems Integration for Tracking Road Alignment and Crossfall.

Underneath the car are distance measuring instruments that measure the rotation of the rear wheels.

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8 of 11 Derek Fung/CNET Australia

Two up

Typically there are two crew members aboard a mapping vehicle: one driver and one capturing data. To stabilise the gyroscope, the car is required to make a stop every half an hour, with a longer stop required once a day.

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9 of 11 Derek Fung/CNET Australia

Travel all over the countryside

Whereis chose to use diesel Nissan Patrols four-wheel drives for its next-gen fleet as they allow the company to traverse all of Australia, including unpaved roads and four-wheel drive tracks.

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10 of 11 Derek Fung/CNET Australia

Hop, skip and jump

No, it's not a game the Whereis drivers have come up with to keep themselves entertained on their frequent stops or when they're stuck in Nowheresville, Australia. The chalk and tape help with equipment calibration.

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11 of 11 Whereis

Aussie made

The system of equipment used in Whereis' new generation vehicle is an Australian design. So far, the technology has been licensed to Australian road authorities, as well as clients in Asia, the Middle East and New Zealand.

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