RITES Limited Tender

Conducting photogrammetric survey using stero satellite imagery data (CARTOS set or similar) as obtained from NRSC (national remote sensing centre) and processing the same using suitable GIS software for generation of Digital Elevation Model (DEM), ortho-photos, topo-maps etc., to verify the doubling/new line alignment proposed in the PET survey . The work shall be done as per detailed specifications /scope of work. It includes all other deliverables as mentioned in tender document. Note: (1 ). The various deliverables in this item such as DEM, ORTHO PHOTOS, DSM, TOPOGRAPHICAL MAP to a scale of 1 :5000 are purely for the purpose of finalization of alignment. However, the accurate DEM/ORTHO PHOTOS/TOPOGRAPHICAL MAP shall be generated using drone/ LiDAR Survey (2).This item is also applicable for sections where the PET survey has not being done. (3). All special conditions mentioned in the agreement particularly under stage - I are applicable on this item. (This stage is applicable only for New Line)

Conducting Aerial Topographical Survey using DGPS based integrated Drone i.e., PPK/RTK based Drone to capture essential ground features and assets and delivering the topographical information for 200m width corridor (100m each side from the centre line) within an accuracy of 5cm. GCP points to be identified and establishment at every 2km paint marked on the permanent structure and 1 hr DGPS observation of the same. (2). TBM point's establishment at every 500 m on paint marked on permanent structures and RTK survey of the same using the 2 km points as the base. (3). Collection of High-Resolution Aerial Imagery of minimum 3 cm GSD using survey grade DGPS integrated Drone i.e. PPK/RTK based Drone having on board dual GNSS system and calibrated camera of 20 MP UAV Aerial Photo Acquisition shall be done to cover the ROW. Suitable Overlapping: minimum 70% forward and 50% side overlap shall be maintained. Ensure Image Quality: Clear/sharp imagery with good light condition. Images must have XYZ co-ordinates and rotational information, sensor size, focal length as meta data. This information must also be made available in a text file. 4. Aero triangulation using the professional photo-grammetry software which supports Stereo Capability to measure control points with highest precision and rigorous bundle block adjustment for reliable mathematical calculation and final results. This operation includes measuring and transferring all tie, check, and control points appearing on all photographs manually; and performing a least squares block adjustment. 5. 3D Topographical mapping -plan data Capture - All topographical information including natural & manmade features to be captured. All the topographical features including Rail, track centre line, Platform, signal, Electrical mast, FOB, RUB, Station Building, Other buildings, Utilities (Surface& Subsurface) by GPR, land use, Roads, wall, Hydro features {Survey using traditional methods such as Echo Sounders etc. along areas such as river crossings etc. where Drone Photogrammetary/ LiDAR data needs to be complemented, including the 4 KM on upstream and 2 KM on downstream in case of important bridge and 1 km on upstream and 500 m on downstream in case of major/minor bridges on each side of center line of proposed alignment along all river crossings with river cross-sections soundings (or alternate acceptable method) taken at center line and then at every 500 m (for important bridges) /250 m (for Major/Minor bridges) distance along upstream and downstream of the river and up to 100 m beyond HFL or bank to bank level. The DEM from this data shall be suitably merged or complemented suitably with the LiDAR DEM in consultation with the client. Separate cross sections of river @ 500-meter(for important bridges) /250 m (for Major/Minor bridges) interval shall be provided} were captured, (Extensive Layer list in CAD) The output is delivered in DWG format. 6. Generation of ortho-photos as per Railway Guidelines (Letter no. 2015/Track-1/24 (1 )/18/1/ dated 09.10.2017 and as per the alignment plan given by RITES/Railways on the Google earth to provide alignment plan in km file format. Deliverable for OrthoPhoto: 1. Raw images (jpg format) (2cm GSD) 2. File scaled and geo positioned ortho- photo tiles in jpg &sid compressed format of 2cm resolution and resampled at 5cm GSD. 3. Final scaled and geo positioned ortho tiles in jpg and Sid compressed format of 2cm resolution and resampled at 5cm GSD.4. Final scaled and geopositioned ortho-mosaic in JPG &Sid format for each 5km. 5. Map file compatible to CAD/GIS in SHP format duly linked with attributes of assets. 6. Quality control report for positional accuracy assessment coordinates to be picked for at least 5 well defined assets in 1 km length from google and same to be measured on the ortho- photo coordinates comparison. The difference between these values should be greater than equal to 3m. 7. The centre line, piers, railway land boundary are to be shown on Google earth. (Alignment file in dwg format and coordinates will be provided by Railways. This item includes preparation of ortho-photos for yards also falling in the corridor of 300m or between Railway Boundary whichever is more. Separate payment will be made for bigger yards vide relevant item of the BOQ for generation of ortho-photos over and above 3. The details are to be collected for a corridor of 200m on the finalized alignment. i.e. 100m on either side & for yards it should be 150m either side of proposed line or between Railway Boundary whichever is more. Work needs to be carried out as per technical specification of tender documents

Conducting Aerial Topographical Survey using mobile/vehicle mounted LiDAR System for proposed New BG line Platform -customized & calibrated platform to install the system on vehicle. LIDAR Sensor - a) LIDAR with fully integrated POS (PPK+ IMU).b) Lessor Class - 1 (wave length 903mm). c) Channel 16. d) Scan Rate: 600.000 points per second. e) No of Returns - 2. f) Scanner Orientation - Adjustable to (0-30@ 4545@ 90 degree). 9) No. of GNSS Receiver / Antennas - 2. h) Constellation GPS / GLONASS (L 1/L2). i) Operation Mode -RTK / PPK. J) IMU Rate - 100 hz - 250 hx. k) IMU Accuracy - Roll /Pitch / Heading 0.05 Degree.I) RGB Camera - 12 MP Front/I 360 degree. m) Altitude range : up to at least 70- 100 m above ground. n) Precision : 4CM.O) Point Cloud Accuracy -5CM. p) LIDAR with IMU & fully integrated rechargeable batteries for autonomous operation of LiDAR independent from UAV power circuit. Establishment of Ground Control network with 1 CM absolute accuracy. Primary Control Static DGPS survey with 01 hour uninterrupted observation control pair Paint marked on permanent structure @ 2KM. Additional Benchmark control Point using RTK/ Electronic Total Station at 250M paint marked on permanent structure /designed GCP board to ensure control for full width. Collecting the Railway level available on nearby benchmark and transferring the reduced level to the Primary Control points & benchmark control points established. As built Survey including topographical details information including natural & manmade features to be captured. All the topographical features including Rail, track centre line, Platform, signal, Electrical mast, FOB, RUB, Station Building, Other buildings, Utilities (Surface& Subsurface) by GPR, land use, Roads, wall, Hydro features {Survey using traditional methods such as Echo Sounders etc. along areas such as river crossings etc. where Drone Photogrammetary/ LiDAR data needs to be complemented, including the 4 KM on upstream and 2 KM on downstream in case of important bridge and 1 km on upstream and 500 m on downstream in case of major/minor bridges on each side of centre line of proposed alignment along all river crossings with river cross-sections soundings (or alternate acceptable method) taken at centre line and then at every 500 m (for important bridges) /250 m (for Major/Minor bridges) distance along upstream and downstream of the river and up to 100 m beyond HFL or bank to bank level. The DEM from this data shall be suitably merged or complemented suitably with the LiDAR DEM in consultation with the client. Separate cross sections of river @ 500-meter(for important bridges) /250 m (for Major/Minor bridges) interval shall be provided} were captured, (Extensive Layer list in CAD) The output is delivered in DWG format using UAS/DRONE based LIDAR System in dense vegetation covered area. 30 point cloud data work using engineering grade survey Drone based LiDAR system including extraction of data for km up to the width of 200m (100m each side from the centre line). Generation of ortho-photos as per Railway Guidelines (Letter no. 2015/Track-1/24 (1 )/18/1/ dated 09.10.2017 and as per the alignment plan given by RITES/Railways on the Google earth to provide alignment plan in km file format. Deliverable for OrthoPhoto: 1. Raw images (jpg format) (2cm GSD) 2. File scaled and geo positioned ortho- photo tiles in jpg &sid compressed format of 2cm resolution and resampled at 5cm GSD. 3. Final scaled and geo positioned ortho tiles in jpg and Sid compressed format of 2cm resolution and resampled at 5cm GSD.4. Final scaled and geopositioned ortho-mosaic in JPG &Sid format for each 5km. 5. Map file compatible to CAD/GIS in SHP format duly linked with attributes of assets. 6. Quality control report for positional accuracy assessment coordinates to be picked for at least 5 well defined assets in 1 km length from google and same to be measured on the ortho- photo coordinates comparison. The difference between these values should be greater than equal to 3m. 7. The centre line, piers, railway land boundary are to be shown on Google earth. (Alignment file in dwg format and coordinates will be provided by Railways. This item includes preparation of ortho-photos for yards also falling in the corridor of 150m either side of proposed line or between Railway Boundary whichever is more. The details are to be collected for a corridor of 200m on the finalized alignment. i.e. 100m on either side. Work needs to be carried out as per technical specification of tender documents.