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Elements and Performance Criteria

1. Prepare for advanced GNSS control survey.
   • Survey specifications are identified and analysed and key activities and timelines scheduled according to available resources and organisational requirements.
   • Organisational GNSS survey requirements are complied with and recorded.
   • GNSS equipment is set up and calibrated according to survey and organisational requirements.
   • Existing survey control data is obtained, validated and recorded, and need for additional controls is determined based on identified non-conformities.
   • Set-out data is collated, validated, manipulated and uploaded into the GNSS receiver.
   • Work responsibilities are allocated and communicated to appropriate persons according to survey and organisational requirements.
2. Carry out GNSS control surveying tasks.
   • GNSS equipment is programmed and operated according to survey and organisational requirements.
   • GNSS survey is related to a reference system according to survey specifications.
   • Problems relating to discrepancies in the reference system are identified and resolved, or contingencies are managed.
   • GNSS data is collected using planned methodologies according to survey and organisational requirements.
   • Network of points for controlling horizontal and vertical positions is implemented according to project specifications.
   • GNSS measurements are validated and recorded on the reference system according to specifications.
3. Finalise advanced GNSS control survey.
   • GNSS software is used to process data according to survey and organisational requirements.
   • Validation checks are completed according to project specifications and organisational requirements.
   • Discrepancies between survey specifications and actual data are identified and addressed according to survey and organisational requirements.
   • Survey is finalised and documentation completed according to organisational requirements.

Range Statement

This section specifies work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. Bold italicised wording, if used in the performance criteria, is detailed below.
Appropriate persons must include at least two of the following:	client colleague engineer manager registered or qualified surveyor.

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Performance Evidence

A person demonstrating competency in this unit must satisfy the requirements of the elements, performance criteria, foundation skills and range of conditions of this unit. The person must also plan and conduct an advanced global navigation satellite system (GNSS) control survey for two different projects using the following pieces of equipment:

geodetic GNSS receiver

associated equipment capable of differential and real time modes of operations.

While conducting the above advanced GNSS control surveys, the person must:

analyse survey specifications, including:

cross-sections and plans

technical descriptions of surveying data and their requirements

plan and document survey methodologies and control data

apply projection and datum parameters when using GNSS equipment and software

collect data for GNSS positions, including differential methods

communicate clearly with others to report work information and allocate duties

comply with industry-accepted standards for validating accuracy of GNSS data and existing control network

comply with organisational requirements for:

recording, storing and filing data

resource allocation

using and storing equipment

working safely, using personal protective equipment (PPE) when conducting field work

conduct field reconnaissance to analyse existing control networks

implement a network of horizontal and vertical control points

identify non-conformances in control networks and the need for additional controls

implement project management techniques to schedule, monitor and report on survey tasks and outcomes

program and operate GNSS equipment and software to analyse and manipulate images and data.

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Knowledge Evidence

A person demonstrating competency in this unit must demonstrate knowledge of:

accuracy and precision requirements for GNSS control networks

GNSS accuracy enhancement techniques

GNSS availability, structures, capabilities and limitations

GNSS control surveying techniques

industry-accepted methods for validating set-out data to identify errors and discrepancies

methods for accessing, manipulating, retrieving and archiving GNSS data

organisational policies and procedures relating to:

health and safety relating to survey activities

reporting and documentation

using and allocating resources

using GNSS equipment and software

projection and datum parameters required for GNSS equipment and processing software

reference and coordinate systems for surveying data, including Australian Height Datum and Map Grid of Australia

situations and factors that impact on the effectiveness of GNSS technologies

techniques for project management, including techniques for scheduling, monitoring and reporting on survey tasks and outcomes

types of GNSS equipment and software and their uses.

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