NZQA Expiring unit standard
20798 version 3
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Title
Describe and use a Global Positioning System (GPS) for a specified
activity
Level
3
Credits
2
Purpose
People credited with this unit standard are able to: demonstrate
knowledge of systems for determining a fixed position on the
surface of the earth, and of the GPS; and demonstrate the use
of GPS and tracklogs for a specified activity.
Classification
Agriculture > General Agriculture
Available grade
Achieved
Explanatory notes
1
Legislation relevant to this unit standard includes but is not limited to the Health and
Safety in Employment Act 1992, and its subsequent amendments.
2
Definition
organisational standards refer to the verbal and written instruction to staff on the
standards required for work practices.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of systems for determining a fixed position on the surface of the
earth.
Evidence requirements
1.1
Latitude and longitude are described in relation to their use in determining
position on the surface of the earth.
1.2
The New Zealand Map Grid (NZMG) is described in relation to its use in
determining position on the surface of the earth.
Range
1.3
scale, grid, origin, grid reference.
The Geodetic Datum (World Geodetic System – 1984) is described in terms of
its relationship to NZ Geodetic Datum 2000.
Outcome 2
Demonstrate knowledge of the GPS.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
20798 version 3
Page 2 of 3
Evidence requirements
2.1
Satellites are described in terms of their role, position, and number required for
determining horizontal and vertical positioning using the GPS.
2.2
GPS is described in terms of the method by which it calculates and defines the
position on the surface of the earth.
2.3
The primary pages of a GPS are described in terms of their features.
Range
satellite page, position page, map page, navigation page, main
menu page.
2.4
The method of defining a grid position on the surface of the earth using a GPS
is described.
2.5
GPS terminology is described in terms of its practical applications.
Range
waypoint, route, tracking, goto, crosstrack error (XTK), estimate
time of arrival (ETA), estimate time enroute (ETE).
Outcome 3
Demonstrate the use of GPS.
Evidence requirements
3.1
GPS is described in terms of its use, and limitations for use, for a specified
activity.
Range
3.2
evidence is required for at least two limitations.
Methods of recording waypoints using a GPS receiver are described.
Range
evidence is required for at least two methods.
3.3
Waypoints related to a specified activity are entered, renamed, and deleted in
the GPS.
3.4
Waypoints are located within 10 metres accuracy and within a timeframe which
meets organisational standards.
Range
evidence is required for at least six waypoints.
Outcome 4
Demonstrate the use of tracklogs.
Evidence requirements
4.1
The function of a tracklog is described for a specified activity.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
4.2
20798 version 3
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Tracklogs are recorded using a GPS receiver for a specified activity.
Range
evidence is required for at least two methods.
Replacement information
This unit standard has been replaced by unit standard
29414
This unit standard is expiring. Assessment against the standard must take place by
the last date for assessment set out below.
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
26 July 2004
31 December 2018
Rollover
2
20 May 2008
31 December 2018
Review
3
17 March 2016
31 December 2018
Consent and Moderation Requirements (CMR) reference
0052
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016