{ "cdp_num": null, "comment": "The antenna is mounted to the top of the\r\nSuurupi lighthouse. The description is\r\nfollowing: there is a metal ladder with metal\r\nhandrail.Both are firmly welded in several\r\npoints of the cupola of the lighthouse.\r\nOn metal handrail is a metal plate - 8 mm thick,\r\nit is fixed to handrail with 3 bolts.\r\nIn addition, the metal\r\nplate has holes for fixing the tripod. The ends\r\nof the tripod were threaded, which made it\r\npossible to screw the tripod to the platform\r\nwith female screws. The tripod was provided\r\nalso with lift screws to ensure the horizontal\r\nposition of the antenna. The upper part of the\r\ntripod consists of a triangular metal plate\r\nwith a hole in the middle for the bolting of\r\nthe antenna.\r\nThe height of the monument is above the local\r\nground plane.", "conditions": [ { "comments": "Antenna is placed on the top of the\r\nmetal cupola of lighthouse", "date_from": "2011-09-21 00:00:00", "date_to": null, "type": "multipath_sources: METAL ROOF" } ], "country": "Estonia", "country_code_ISO": "EST", "date_from": "2011-09-21 12:00:00", "date_to": null, "description": null, "geological": { "bedrock": { "condition": "JOINTED", "type": "SEDIMENTARY" }, "characteristic": "LIMESTONE", "distance_to_fault": null, "fault_zone": "NO", "fracture_spacing": "1-10" }, "iers_domes": "10601M002", "instrument_collocation": [ { "comment": "Finnish Geodetic Institute", "date_from": "1995-09-27 00:00:00", "date_to": "1995-09-29 00:00:00", "status": "MOBILE", "type": "ABSOLUTE GRAVIMETER JILAG-5" }, { "comment": "Institut f\u00fcr Erdmessung,\r\nLeibniz Universit\u00e4t Hannover (Germany)", "date_from": "2007-07-07 00:00:00", "date_to": "2007-07-09 00:00:00", "status": "MOBILE", "type": "ABSOLUTE GRAVIMETER FG5-220" }, { "comment": "Finnish Geodetic Institute", "date_from": "2008-07-15 00:00:00", "date_to": "2008-07-17 00:00:00", "status": "MOBILE", "type": "ABSOLUTE GRAVIMETER FG5-221" } ], "local_ties": [], "location": { "city": "Suurupi", "coordinates": { "X": 2959057.248, "Y": 1341058.5, "Z": 5470426.806, "altitude": 84.4, "lat": 59.463571242715645, "lon": 24.380254647128833 }, "country": "Estonia", "country_iso_code": "EST", "description": "", "state": "Harjumaa", "tectonic": { "plate_name": "EURASIAN" } }, "logs": { "contact": "ESTPOS GNSS team (estpos@maaamet.ee)", "date": "2025-06-12 00:00:00", "log_type": "UPDATE", "modified": "UNAVAILABLE", "previous": "UNAVAILABLE", "title": "SUR400EST.xml" }, "marker": "SUR4", "monument": { "description": "Top of the lighthouse", "foundation": "ROOF", "foundation_depth": null, "height": 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