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Mosaic-X5

The Mosaic-X5 can be configured through the web interface, which can be accessed after connecting the receiver to your computer using a USB cable and visiting the IP address 192.168.3.1 in a browser.

Generation 8 Modules

u-blox Generation 8 Modules can be configured with the u-center software.

There are 2 main height systems used in New Zealand, with normal-orthometric being the most common. This takes into account the quasigeoid and the influence of gravity to support accurate elevation measurements.

New Zealand Vertical Datum 2016 (NZVD2016) heights can be obtained anywhere in New Zealand, including the offshore islands. Published NZVD2016 heights are available in Landonline and the Geodetic Database. Calculated heights can be derived from GNSS (global navigation satellite system) observations. Transferred heights can be obtained using traditional heighting techniques.

Clear and complete referencing of coordinates is important because ongoing movement can mean that they change several times after an earthquake.

The reference surface for New Zealand Vertical Datum 2016 (NZVD2016) is New Zealand Quasigeoid 2016 (NZGeoid2016). NZGeoid2016 is a gravity derived model, which can be used to determine NZVD2016 heights anywhere in New Zealand and its offshore islands.

Selected presentations relating to geodesy in New Zealand by staff from Toitū Te Whenua.

Projections are selected so that they best represent an area of the globe on a flat surface. There are separate projections for McMurdo Sound, Borchgrevink Coast, Pennell Coast, and the Ross Sea.

The physical part of New Zealand’s geodetic system is a network of geodetic marks that are used as reference points for surveys.

Vertical datums define a reference surface for measuring elevations and depths, ensuring consistency in height measurements.

Meridional circuits divide the country into a set of survey regions, used to define a local projection for mapping purposes. The Cadastral Survey Rules 2021 require that the NZGD2000 (New Zealand Geodetic Datum 2000) Transverse Mercator 2000 Meridional Circuit projections are used for cadastral surveyors.

The North Island Yard Grid and South Island Yard Grid were the projections for the 1:63,360 (inch-to-the-mile) topographic mapping in New Zealand between 1942 and 1973.

Projections are used to transform a curved surface into a flat map, making locations easier to define. There are 5 official map projections currently used in New Zealand, and 4 that are no longer used.