3/4/2023 0 Comments Trimble business centre 5.0![]() On completion of the survey, the data is post processed back at the office. It is downloaded and processed using a combination of Trimble Business Centre, Cyclone and MAPINFO GIS software. It includes several E1 (surveyed for longer than 8 hours) and E2 pins (surveyed for 6 to 8 hours) which are both suitable for levelling and GPS surveys GPS equipment using this control network has an accuracy of +/- 15mm in the vertical and +/- 20mm in the horizontal. These all form part of the control network set up by Longdin and Browning for the Regional Coastal Monitoring Programme (RCMP) but recently resurveyed by Canterbury City Council in January 2017 following the OSTN02 conversion to OSTN15. Topographic points were taken through the use of GPS equipment as listed below Trimble R9s Base Receiver Trimble R8s Rover Receiver Trimble TSC3 Hand Held Units Trimble TDL450 radio repeater Survey ControlĮxisting base stations have been used at Folkestone Harbour, Battery Point, Dymchurch North, Dymchurch South and Winchelsea for these topographic surveys. The difference between geoid models is estimated to be less than 5cm. Data between Rye Harbour and Pett was collected in 2012 and data used for Pett was collected in 2007.ĭata after January 2017 was collected using the OSTN15 Geoid model and data prior to January 2017 used the OSTNO2 geoid model. Structure data between Sandgate and Camber Sands was collected in 2017. 2.0 INPUTS Topographic structure data collected on behalf of the Regional Coastal Monitoring Programme was used as the main input for this project. Figure 1: Location Map © Crown copyright and database rights 2018 Ordnance Survey 100019614. Additional overlaid information is copyright of Canterbury City Council. Structure data is available within the red polygons. Topographic surveys were undertaken for all structures using Trimble GPS equipment. Reference: Structure_Report_Shepway_Flood_ModelĪpproved By: C. French Contents 1.0 INTRODUCTION . 3 2.0 INPUTS . 3 3.0 METHODOLOGY . 4 4.0 OUTPUTS . 4 5.0 ASSUMPTIONS . 5 1.0 INTRODUCTION The Environment Agency requested the structure elevations between Sandgate and Winchelsea to feed into the flood model (Figure 1). Link to page 3 link to page 3 link to page 4 link to page 4 link to page 5 Canterbury City CouncilĮ-mai e: Document Title: Provision of structure data for Shepway flood model Provision of structure data for Shepway flood model May 2018 ![]()
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