Measuring technology and accuracy

James Jackson made this Freedom of Information request to Rural Payments Agency

This request has been closed to new correspondence. Contact us if you think it should be reopened.

The request was partially successful.

Dear Rural Payments Agency,

Please could you confirm the hardware and software used by your inspectors to measure areas of land.
Please confirm the level of accuracy achieved by the software and factors which effect the accuracy.
Have there been any recorded incidents when the measuring software has had more than a 10% error in area.

Yours faithfully,

James Jackson

Information Rights Team, Rural Payments Agency

02 September 2016
Ref: RFI 4209
 
Dear Mr. Jackson,
 
Re: Environmental Information Regulations – Advice and Assistance
 
Thank you for your request for information dated 30 August 2016 which is
being dealt with under the Environmental Information Regulations 2004
(EIR).
 
You have asked for information on the hardware and software used by your
inspectors to measure areas of land. 
 
From our preliminary assessment, it is clear that we will not be able to
answer your request without further clarification. Regulation 9 of the EIR
requires public authorities to provide advice and assistance to applicants
where reasonable.
 
In order for us to be able to identify the information you require, please
provide a time frame i.e. year(s) you would like the information for e.g.
2015. This is because different hardware/ software have been used over the
years, which may have differing results as per your query. This
information will help us focus our search for the information you require.
 
Once we have received the clarification on the information sought, we will
be able to proceed with your request and advise whether we can provide the
information. Please note that the 20 working day timescale for responding
to your request will commence from the date that we receive the
clarification.
 
If you have any queries about this let us know.
 
Yours sincerely,
 
 
 
Information Rights Team
Rural Payments Agency | North Gate House | Reading | RG1 1AF
Tel: 01189 687656 | Fax: 0118 9687250 | Email: [1][email address]
Follow us on Twitter @Ruralpay
 
 
 

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References

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1. mailto:[email address]

Dear Information Rights Team,

Ref the time frame: period October 2014 - October 2015

Yours sincerely,

James Jackson

Information Rights Team, Rural Payments Agency

6 September 2016

Ref: RFI 4216

 

Dear Mr. Jackson

 

Re: Freedom of Information Act 2000 (FOI) – Acknowledgement

 

Thank you for your request for information dated 2 September 2016 which
is being dealt with under the Freedom of Information Act 2000 (FOI).

 

We normally expect to respond to requests within 20 working days.

 

If you have any queries about this let us know.

 

Yours sincerely,

 

 

Information Rights Team

Rural Payments Agency | North Gate House | Reading | RG1 1AF

Tel: 01189 687656 | Fax: 0118 9687250 | Email: [1][email address]

Follow us on Twitter @Ruralpay

 

 

 

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References

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1. mailto:[email address]

Information Rights Team, Rural Payments Agency

26 September 2016
Ref: RFI 4216
 
Dear Mr. Jackson
 
Re: Environmental Information Regulations – Information Request
 
We refer to your email dated 2 September 2016, which has been dealt with
under the Environmental Information Regulations 2004 (EIR).
 
You have asked for information on hardware and software used by RPA’s
inspectors to measure areas of land from October 2014 - October 2015. 
Please find our responses to your questions below:
 

 1. Please could you confirm the hardware and software used by your
inspectors to measure areas of land;

 
Hardware:                       Leica CS25 or CS25+ Rugged Tablet Computer
External GNSS Antenna:          Antcom Active G5 Helix Antenna
Software:                       Leica Zeno Field v3.2.0
 

 2. Please confirm the level of accuracy achieved by the software and
factors which effect the accuracy

 
The CS25 and the associated software and antenna have been validated by
the Swiss Accreditation Service as achieving an accuracy of <0.5m. The
majority of accuracy errors within the global navigation satellite system
(GNSS) are reduced using the satellite-based augmentation system (SBAS)
correction service and Differential Post Processing techniques.  More
information can be seen at the links below:
 
[1]https://www.egnos-portal.eu/discover-egn...
[2]https://en.wikipedia.org/wiki/Differenti...
 

 3. Have there been any recorded incidents when the measuring software has
had more than a 10% error in area

 
Unfortunately, we will not be able to answer this question without further
clarification, Regulation 9 of EIR requires public authorities to provide
advice and assistance to applicants where reasonable.
 
The RPA field inspectors capture a large number of measurements whilst
undertaking a physical inspection which include Point, Line and Polygons
to capture single items, linear features such as boundary changes and
tracks and polygons to measure crop types and other area values.
 
The RPA records the accuracy of the GNSS points that are captured in the
field; this is complimented by the digitiser having the capability to
place geometries that look incorrect into query. 
 
Therefore we require you to provide further information to enable us to
identify and locate the information you have requested.
 
Please can you clarify exactly what specific area measurements you are
referring to, where you state;
 
‘when the measuring software has had more than a 10% error in area’
 
Once we have received the above information, we will be able to proceed
with your request and advise whether we can provide the information.
 
If you are not happy with the way we have handled your request, you can
ask for an internal review. These requests should be submitted in writing
within two months of the date of receipt of the response to your original
request and should be addressed to the Information Rights Team at the
Rural Payments Agency, North Gate House, 21-23 Valpy Street, Reading, RG1
1AF or alternatively email your request for a review to
[3][email address]
 
If you are not content with the outcome of the internal review, you have
the right to apply directly to the Information Commissioner for a
decision. Please note that generally the Information Commissioner cannot
make a decision unless you have first exhausted RPA’s own complaints
procedure. The Information Commissioner can be contacted at:
[4]Information Commissioner’s Office, Wycliffe House, Water Lane,
Wilmslow, Cheshire, SK9 5AF.
 
If you have any queries about this please let us know.
 
Yours sincerely,
 
 
 
Information Rights Team
Rural Payments Agency | North Gate House | Reading | RG1 1AF
Tel: 03300 416502 | Fax: 03300 416574 | Email: [5][email address]
Follow us on Twitter @Ruralpay
 
 
 

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References

Visible links
1. https://www.egnos-portal.eu/discover-egn...
2. https://en.wikipedia.org/wiki/Differenti...
3. mailto:[email address]
4. https://ico.org.uk/
5. mailto:[email address]