Standard
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AS 3778.6.8:2023
[Current]AS 3778.6.8:2023 identically adopts ISO 6420:2016, which specifies methods of determining the position of hydrometric boats
Published: 17/11/2023
Pages: 12
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements for position fixing
5 Position fixing equipment for streamgauging and sediment sampling
5.1 General
5.2 Tapes and tag lines
5.3 Global navigation satellite systems
5.3.1 General
5.3.2 Hydrometric application
5.3.3 System specifications
5.4 Targets and electronic distance measuring equipment
5.4.1 General
5.4.2 Targets
5.4.3 Electronic distance measuring devices
5.5 Electronic survey instruments
5.6 Theodolites
5.6.1 Theodolites and stadia
5.6.2 Angular technique
6 Position fixing equipment for morphological surveys
6.1 General
6.2 Global navigation satellite systems
6.3 Electronic surveying instruments
6.4 Theodolites and stadia rods
7 Uncertainty
7.1 Definition of uncertainty
7.2 Uncertainty of position fixing for streamgauging and sediment sampling
7.2.1 General
7.2.2 Tag lines
7.2.3 Global navigation satellite systems
7.2.4 Targets and distance measuring devices
7.2.5 Electronic surveying instruments
7.2.6 Theodolites
7.3 Uncertainty of position fixing for morphological surveys
7.3.1 General
7.3.2 Global navigation satellite systems
7.3.3 Electronic surveying instruments
7.3.4 Triangulation method using theodolites
Annex A
A.1 General
A.2 Uncertainty about the length of a tag line and interpolating the distance between markings
A.3 Uncertainty resulting from cross section not being normal to the flow
A.4 Uncertainty of GNSS positioning
A.5 Uncertainty of EDMs
A.6 Uncertainty of position because of boat drift
Bibliography
Cited references in this standard
[Current]
Hydrometry - Measurement of liquid flow in open channels - Velocity area methods using point velocity measurements