Identification

Title

LIDAR Ground Truth Surveys

Alternative title(s)

Abstract

The Environment Agency LIDAR Ground Truth surveys dataset is an archive of elevation points and attribute information that have been independently surveyed to verify the accuracy of the EA's LIDAR timestamped surveys. Captured by various independent surveyors, a ground truth survey is a collection of a few hundred points captured on a flat, unambiguous surface such as a tarmac car park or tennis court using GPS. Each ground truth point has an accuracy of +/-3cm R.M.S.E and contains attribute information such as the date of survey, surface type, survey method and transformation and geoidal models used. A ground truth survey may potentially be used for multiple LIDAR surveys provided it is less than 5 years old, or 3 years for coastal projects. The LIDAR timestamped survey is compared against the ground truth survey to assess the Root Mean Square Error (R.M.S.E), standard deviation and random error of the LIDAR. All LIDAR surveys must report an error of less than +/-15cm RMSE and 10cm for standard deviation and random error to pass quality control. For the specific ground truth results for a LIDAR survey please contact us. Attribution statement: © Environment Agency copyright and/or database right 2015. All rights reserved.

Resource type

dataset

Resource locator

https://environment.data.gov.uk/api/file/download?fileDataSetId=8e22cfe5-4ae6-4cb3-8fc9-a041b4d0124d&fileName=LIDAR Ground Truth Surveys Technical Note.docx

protocol: http

description: LIDAR Ground Truth Surveys Technical Note.docx download on Defra Data Services Platform

https://environment.data.gov.uk/api/file/download?fileDataSetId=8e22cfe5-4ae6-4cb3-8fc9-a041b4d0124d&fileName=LIDARGroundTruthSurveys-FGDB.zip

protocol: http

description: LIDARGroundTruthSurveys-FGDB.zip download on Defra Data Services Platform

https://environment.data.gov.uk/api/file/download?fileDataSetId=8e22cfe5-4ae6-4cb3-8fc9-a041b4d0124d&fileName=LIDARGroundTruthSurveys-GeoJSON.zip

protocol: http

description: LIDARGroundTruthSurveys-GeoJSON.zip download on Defra Data Services Platform

https://environment.data.gov.uk/api/file/download?fileDataSetId=8e22cfe5-4ae6-4cb3-8fc9-a041b4d0124d&fileName=LIDARGroundTruthSurveys-GML.zip

protocol: http

description: LIDARGroundTruthSurveys-GML.zip download on Defra Data Services Platform

https://environment.data.gov.uk/api/file/download?fileDataSetId=8e22cfe5-4ae6-4cb3-8fc9-a041b4d0124d&fileName=LIDARGroundTruthSurveys-MID_MIF.zip

protocol: http

description: LIDARGroundTruthSurveys-MID_MIF.zip download on Defra Data Services Platform

https://environment.data.gov.uk/api/file/download?fileDataSetId=8e22cfe5-4ae6-4cb3-8fc9-a041b4d0124d&fileName=LIDARGroundTruthSurveys-SHP.zip

protocol: http

description: LIDARGroundTruthSurveys-SHP.zip download on Defra Data Services Platform

https://environment.data.gov.uk/api/file/download?fileDataSetId=8e22cfe5-4ae6-4cb3-8fc9-a041b4d0124d&fileName=LIDARGroundTruthSurveys-TAB.zip

protocol: http

description: LIDARGroundTruthSurveys-TAB.zip download on Defra Data Services Platform

https://environment.data.gov.uk/explore/16b4d492-0c0d-410b-9732-65eebcc3d9f9?download=true

protocol: http

description: Download data by area of interest

https://environment.data.gov.uk/spatialdata/lidar-ground-truth-surveys/wms

protocol: http

description: LIDAR Ground Truth Surveys WMS

https://environment.data.gov.uk/spatialdata/lidar-ground-truth-surveys/wfs

protocol: http

description: LIDAR Ground Truth Surveys WFS

Unique resource identifier

code

16b4d492-0c0d-410b-9732-65eebcc3d9f9

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

http://www.opengis.net/def/crs/EPSG/0/27700

Classification of spatial data and services

Topic category

environment

elevation

Keywords

reference date

date type

publication

effective date

2010-01-13

Geographic location

West bounding longitude

-6.236

East bounding longitude

2.072

North bounding latitude

55.816

South bounding latitude

49.943

Temporal reference

Temporal extent

Begin position

2005-01-01

End position

2019-01-01

Dataset reference date

date type

creation

effective date

2019-06-12

date type

revision

effective date

2019-06-12

Frequency of update

annually

Quality and validity

Lineage

The Environment Agency LIDAR Ground Truth Archive is an archive of X,Y,Z points and attribute information that have been independently surveyed to verify the accuracy of the EA's LIDAR Timestamped surveys. Captured by various independent surveyors, a ground truth survey is a collection of a few hundred points captured on a flat, unambiguous surface such as a tarmac car park or tennis court using GPS. Each ground truth point has an accuracy of .+/-3cm R.M.S.E and contains attribute information such as the date of survey, surface type and survey method. A ground truth survey may be used for multiple LIDAR surveys provided it is less that 5 years old, or 3 years for coastal projects.

Conformity

Data format

name of format

Open format | Shapefile (SHP)

version of format

Constraints related to access and use

Constraint set

Use constraints

Open Government Licence

Constraint set

Limitations on public access

There are no public access constraints to this data. Use of this data is subject to the licence identified.

Constraint set

Use constraints

Constraint set

Limitations on public access

There are no public access constraints to this data. Use of this data is subject to the licence identified.

Responsible organisations

Responsible party

organisation name

Environment Agency

email address

DSPcustomerforum@environment-agency.gov.uk

web address

https://environment.data.gov.uk/support

description: Defra Data Services Forum

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

Environment Agency

email address

DSPcustomerforum@environment-agency.gov.uk

responsible party role

pointOfContact

Metadata date

2023-12-18

Metadata language

eng