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Profile - Trish Merz

The Toitū Te Whenua PositioNZ Real Time Service (PositioNZ-RT) streams GNSS (including GPS and GLONASS) data in real time. This free service allows users of real-time GNSS equipment to obtain positions in terms of New Zealand Geodetic Datum 2000 (NZGD2000) without having to set up their own base station.

SouthPAN is enabling better productivity for industries by improving the accuracy and reliability of GPS.

SouthPAN early Open Services are available now and are progressively being improved. A certified Safety of Life service will be provided for aviation and other Safety of Life operations from 2028.

We have an ongoing programme to test the compatibility and performance of SouthPAN services on a range of GNSS devices used across different industry sectors.

Our software is used to adjust geodetic networks and convert coordinate systems. This software is free, and runs on Windows.

The PositioNZ-PP service was updated on 10 November 2025 to the use version 5.4 Bernese processing software. We also improved processing algorithms.

Important survey marks can be disturbed, damaged or destroyed simply because people are unaware of them. Marks below ground level are most at risk as they are practically invisible to those working nearby.

Profile - Boris Kirov

Profile - Erica Black

Profile - Jana Kaeppler

Profile - Scott Tansley

Hannah is a Master of Science in Remote Sensing student at Massey University (Turitea Campus, Palmerston North).

The LINZ Geodetic Marks app allows users to navigate to geodetic marks, access mark details, submit updated mark photos, and find key non-boundary marks that may need to be protected when engaging in earthworks.

New Zealand needs people with the skills and understanding to unlock the potential of location information. There are Geographic Information System (GIS) related courses being offered from Whangarei to Invercargill, and students are experiencing big benefits from adding GIS to their study.

SouthPAN (Southern Positioning Augmentation Network) will improve the accuracy and reliability of satellite-based positioning systems in New Zealand and Australia.

Chloe Samaratunga is studying for a Bachelor of Advanced Science with Auckland University of Technology (AUT).

Kasey Oomen is a resilience advisor at Toitū Te Whenua Land Information New Zealand.

Find out more about geodetic control network development, maintenance and protection.

The PositioNZ RINEX data archive collects, stores and provides access to data from a network of continuously recording GNSS (global navigation satellite system) receivers located around New Zealand, including the Chatham Islands and Antarctica.

The CHN provides the street-level control marks that are used by surveyors to connect to and orient cadastral surveys in terms of the official geodetic datum (NZGD2000).

The BGN provides a national coverage of control marks (including the offshore islands and Antarctica) to enable users to efficiently connected to official geodetic and vertical datums.

A programme of monthly online mapping wānanga to help you learn how to map your whenua and tell your stories through GIS mapping. These interactive wānanga are specifically tailored towards those working for iwi, Māori trusts and environmental groups.

The Southern Positioning Augmentation Network (SouthPAN) is a joint initiative of the New Zealand and Australian Governments that provides Satellite-Based Augmentation System (SBAS) services for New Zealand and Australia.

Technical information for equipment manufacturers, solution providers and users of SouthPAN.

How to transform heights between vertical datums.

SNAP (Survey Network Adjustment Package) is a specialist software programme that is used when working with large or complex survey networks. It can perform a range of tasks including adjusting geodetic control marks, transforming between coordinate systems, and applying deformation models. This page includes guidance and examples to help people use this software.

The most accurate method for transforming coordinates between New Zealand Geodetic Datum 1949 (NZGD1949) and New Zealand Geodetic Datum 2000 (NZGD2000) is to use a distortion grid. On this page you can download the distortion grid file and find other information available regarding this horizontal grid transformation.

PositioNZ-PP can be used to create a cadastral survey network (CSN) or a geodetic mark in areas where there is no efficient way to connect to the datum. Find out how to add these marks to Landonline before a cadastral survey dataset (CSD) is submitted.

This page contains links to the Brown Bag Resilience Series of presentations, including slides, videos and webinars.

Alex is a Geospatial Data Administrator with the New Zealand Defence Force.

Rebecca McMorran is a Senior Transport Analyst, Transport Strategy Team at the Wellington City Council