{ "cdp_num": null, "comment": "Point No. in National Triangulation: RD 370351\r\nThe station is operating under responsibility\r\nof the AGRS.NL organisation (MD\/KAD\/TUD).", "conditions": [ { "comments": "Located on South tower, 100 meters from GNSS\r\nantennae, transmitting in a 240 degrees sector.\r\nThe GNSS antennae are located in a 120 degrees\r\nsector not covered by the GSM system. Test at\r\n5 meters from the GSM antenna have shown no\r\ndegradation of the GPS, so it is very unlikely\r\nthat the GPS is affected.", "date_from": "1997-03-25 00:00:00", "date_to": null, "type": "radio_interferences: CELL PHONE ANTENNA" }, { "comments": "Flat roof with concrete balustrade at right\r\nangles with the roof, and several 90 degrees\r\ncorners. Medium multipath effects have been\r\nobserved.", "date_from": "1994-12-30 00:00:00", "date_to": null, "type": "multipath_sources: ROOF" }, { "comments": null, "date_from": "1997-03-25 00:00:00", "date_to": null, "type": "local_episodic_effect: Cell Phone transmission started, see 9.1.1" }, { "comments": null, "date_from": "2001-11-07 00:00:00", "date_to": null, "type": "local_episodic_effect: EMP Protector HUBER-SUHNER 34U2.17A installedin the antenna cable" } ], "country": "Netherlands", "country_code_ISO": "NLD", "date_from": "1994-12-30 13:00:00", "date_to": null, "description": "BRASS NAIL", "geological": { "bedrock": { "condition": "FRESH", "type": "SEDIMENTARY" }, "characteristic": "SAND", "distance_to_fault": null, "fault_zone": "NO", "fracture_spacing": "0" }, "iers_domes": "13502M004", "instrument_collocation": [ { "comment": "IGEX experiment. Receivers:\r\n1. 1998-08-17\/1999-02-17 ASHTECH GG24C\r\n2. 1999-02-17\/CCYY-MM-DD JPS LEGACY GGD", "date_from": "1998-08-17 00:00:00", "date_to": null, "status": "PERMANENT", "type": "GPS" } ], "local_ties": [ { "accuracy": 1, "comment": "Checked twice per year using a local survey,\r\nbut only significant changes will be reported", "cpd_num": null, "date_at": "1994-04-19 00:00:00", "dx": 1.818, "dy": 0.958, "dz": -1.584, "iers_domes": "13502M001", "name": "BIG ASTRON. PILLAR", "survey_method": "TRILATERATION\/TRIANGULATION\/LEVELLING\/GPS CAMP.", "usage": "FOOTPRINT" }, { "accuracy": 1, "comment": "Checked twice per year using a local survey,\r\nbut only significant changes will be reported", "cpd_num": null, "date_at": "1994-04-19 00:00:00", "dx": 0.807, "dy": -1.748, "dz": -0.524, "iers_domes": "13502M003", "name": "GPS (mark #15)", "survey_method": "TRILATERATION\/TRIANGULATION\/LEVELLING\/GPS CAMP.", "usage": "FOOTPRINT" }, { "accuracy": 1, "comment": "Checked twice per year using a local survey,\r\nbut only significant changes will be reported", "cpd_num": null, "date_at": "1994-04-19 00:00:00", "dx": 1.596, "dy": 12.563, "dz": -2.121, "iers_domes": "13502M002", "name": "EUREF\/GPS (mark #18)", "survey_method": "TRILATERATION\/TRIANGULATION\/LEVELLING\/GPS CAMP.", "usage": "FOOTPRINT" }, { "accuracy": 1, "comment": "Checked twice per year using a local survey,\r\nbut only significant changes will be reported", "cpd_num": null, "date_at": "1994-04-19 00:00:00", "dx": 3.344, "dy": 10.491, "dz": -3.358, "iers_domes": "13502M005", "name": "GPS (mark #19)", "survey_method": "TRILATERATION\/TRIANGULATION\/LEVELLING\/GPS CAMP.", "usage": "FOOTPRINT" }, { "accuracy": 1, "comment": "Checked twice per year using a local survey,\r\nbut only significant changes will be reported", "cpd_num": null, "date_at": "1994-04-19 00:00:00", "dx": 9.491, "dy": -0.936, "dz": -7.48, "iers_domes": "13502M006", "name": "GPS (mark #20)", "survey_method": "TRILATERATION\/TRIANGULATION\/LEVELLING\/GPS CAMP.", "usage": "FOOTPRINT" }, { "accuracy": 1, "comment": "Checked twice per year using a local survey,\r\nbut only significant changes will be reported", "cpd_num": null, "date_at": "1994-04-19 00:00:00", "dx": 12.008, "dy": -7.08, "dz": -9.073, "iers_domes": "13502M007", "name": "GPS (mark #21)", "survey_method": "TRILATERATION\/TRIANGULATION\/LEVELLING\/GPS CAMP.", "usage": "FOOTPRINT" } ], "location": { "city": "Delft", "coordinates": { "X": 3924687.742, "Y": 301132.768, "Z": 5001910.798, "altitude": 74.4, "lat": 51.986117113662395, "lon": 4.387584084072625 }, "country": "Netherlands", "country_iso_code": "NLD", "description": "Former Geodesy building Thijsseweg 11, 5 km\r\nSouth of the center of town. 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09:50:00", "date_to": "1996-07-30 11:14:00", "value_date": null, "value_numeric": null, "value_varchar": "NONE" }, { "attribute": { "name": "serial_number" }, "date_from": "1996-07-25 09:50:00", "date_to": "1996-07-30 11:14:00", "value_date": null, "value_numeric": null, "value_varchar": null } ], "item_type": { "name": "radome" } } }, { "item": { "comment": null, "contact_as_owner": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "metadata_custodian", "title": "" }, "date_from": "1996-07-30 11:15:00", "date_to": "1996-08-08 13:29:00", "item_attributes": [ { "attribute": { "name": "antenna_type" }, "date_from": "1996-07-30 11:15:00", "date_to": "1996-08-08 13:29:00", "value_date": null, "value_numeric": null, "value_varchar": "AOAD\/M_T" }, { "attribute": { "name": "serial_number" }, "date_from": "1996-07-30 11:15:00", "date_to": "1996-08-08 13:29:00", "value_date": null, "value_numeric": null, "value_varchar": "177" }, { "attribute": { "name": "antenna_reference_point" }, "date_from": "1996-07-30 11:15:00", "date_to": "1996-08-08 13:29:00", "value_date": null, "value_numeric": null, "value_varchar": "BPA" }, { "attribute": { "name": "marker_arp_up_ecc" }, "date_from": "1996-07-30 11:15:00", "date_to": "1996-08-08 13:29:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_north_ecc" }, "date_from": "1996-07-30 11:15:00", "date_to": "1996-08-08 13:29:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_east_ecc" }, "date_from": "1996-07-30 11:15:00", "date_to": "1996-08-08 13:29:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "alignment_from_true_n" }, "date_from": "1996-07-30 11:15:00", "date_to": "1996-08-08 13:29:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "antenna_cable_type" }, "date_from": "1996-07-30 11:15:00", "date_to": "1996-08-08 13:29:00", "value_date": null, "value_numeric": null, "value_varchar": "RG214\/U TYPE 13 AWG TYPE CL2 (UL) E100316S" }, { "attribute": { "name": "antenna_cable_length" }, "date_from": "1996-07-30 11:15:00", "date_to": "1996-08-08 13:29:00", "value_date": null, "value_numeric": 30, "value_varchar": null } ], "item_type": { "name": "antenna" } } }, { "item": { "comment": null, "contact_as_owner": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "metadata_custodian", "title": "" }, "date_from": "1996-07-30 11:15:00", "date_to": "1996-08-08 13:29:00", "item_attributes": [ { "attribute": { "name": "radome_type" }, "date_from": "1996-07-30 11:15:00", "date_to": "1996-08-08 13:29:00", "value_date": null, "value_numeric": null, "value_varchar": "NONE" }, { "attribute": { "name": "serial_number" }, "date_from": "1996-07-30 11:15:00", "date_to": "1996-08-08 13:29:00", "value_date": null, "value_numeric": null, "value_varchar": null } ], "item_type": { "name": "radome" } } }, { "item": { "comment": "A conical polyester antenna radome is used on\r\nthe AOAD\/M_T antenna. This is one of the\r\nearlier radome designs, by Danny van Loon, in\r\n1991. For some time, it has also been used in\r\nthe Swedish network, but there it has been\r\nphased out.", "contact_as_owner": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "metadata_custodian", "title": "" }, "date_from": "1996-08-08 13:30:00", "date_to": "2000-07-23 06:30:00", "item_attributes": [ { "attribute": { "name": "antenna_type" }, "date_from": "1996-08-08 13:30:00", "date_to": "2000-07-23 06:30:00", "value_date": null, "value_numeric": null, "value_varchar": "AOAD\/M_T" }, { "attribute": { "name": "serial_number" }, "date_from": "1996-08-08 13:30:00", "date_to": "2000-07-23 06:30:00", "value_date": null, "value_numeric": null, "value_varchar": "240" }, { "attribute": { "name": "antenna_reference_point" }, "date_from": "1996-08-08 13:30:00", "date_to": "2000-07-23 06:30:00", "value_date": null, "value_numeric": null, "value_varchar": "BPA" }, { "attribute": { "name": "marker_arp_up_ecc" }, "date_from": "1996-08-08 13:30:00", "date_to": "2000-07-23 06:30:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_north_ecc" }, "date_from": "1996-08-08 13:30:00", "date_to": "2000-07-23 06:30:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_east_ecc" }, "date_from": "1996-08-08 13:30:00", "date_to": "2000-07-23 06:30:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "alignment_from_true_n" }, "date_from": "1996-08-08 13:30:00", "date_to": "2000-07-23 06:30:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "antenna_cable_type" }, "date_from": "1996-08-08 13:30:00", "date_to": "2000-07-23 06:30:00", "value_date": null, "value_numeric": null, "value_varchar": "RG214\/U TYPE 13 AWG TYPE CL2 (UL) E100316S" }, { "attribute": { "name": "antenna_cable_length" }, "date_from": "1996-08-08 13:30:00", "date_to": "2000-07-23 06:30:00", "value_date": null, "value_numeric": 30, "value_varchar": null } ], "item_type": { "name": "antenna" } } }, { "item": { "comment": "A conical polyester antenna radome is used on\r\nthe AOAD\/M_T antenna. This is one of the\r\nearlier radome designs, by Danny van Loon, in\r\n1991. For some time, it has also been used in\r\nthe Swedish network, but there it has been\r\nphased out.", "contact_as_owner": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "metadata_custodian", "title": "" }, "date_from": "1996-08-08 13:30:00", "date_to": "2000-07-23 06:30:00", "item_attributes": [ { "attribute": { "name": "radome_type" }, "date_from": "1996-08-08 13:30:00", "date_to": "2000-07-23 06:30:00", "value_date": null, "value_numeric": null, "value_varchar": "DUTD" }, { "attribute": { "name": "serial_number" }, "date_from": "1996-08-08 13:30:00", "date_to": "2000-07-23 06:30:00", "value_date": null, "value_numeric": null, "value_varchar": null } ], "item_type": { "name": "radome" } } }, { "item": { "comment": "Installed on 2001-11-07T08:30Z (1139\/3):\r\nEMP Protector HUBER-SUHNER 34U2.17A\r\nantenna -> ~12 m cable -> EMP Protector\r\nHUBER-SUHNER 34U2.17A -> ~8 m cable -> receiver", "contact_as_owner": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "metadata_custodian", "title": "" }, "date_from": "2000-07-23 07:00:00", "date_to": "2016-07-13 13:30:00", "item_attributes": [ { "attribute": { "name": "antenna_type" }, "date_from": "2000-07-23 07:00:00", "date_to": "2016-07-13 13:30:00", "value_date": null, "value_numeric": null, "value_varchar": "TRM29659.00" }, { "attribute": { "name": "serial_number" }, "date_from": "2000-07-23 07:00:00", "date_to": "2016-07-13 13:30:00", "value_date": null, "value_numeric": null, "value_varchar": "93258" }, { "attribute": { "name": "antenna_reference_point" }, "date_from": "2000-07-23 07:00:00", "date_to": "2016-07-13 13:30:00", "value_date": null, "value_numeric": null, "value_varchar": "BPA" }, { "attribute": { "name": "marker_arp_up_ecc" }, "date_from": "2000-07-23 07:00:00", "date_to": "2016-07-13 13:30:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_north_ecc" }, "date_from": "2000-07-23 07:00:00", "date_to": "2016-07-13 13:30:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_east_ecc" }, "date_from": "2000-07-23 07:00:00", "date_to": "2016-07-13 13:30:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "alignment_from_true_n" }, "date_from": "2000-07-23 07:00:00", "date_to": "2016-07-13 13:30:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "antenna_cable_type" }, "date_from": "2000-07-23 07:00:00", "date_to": "2016-07-13 13:30:00", "value_date": null, "value_numeric": null, "value_varchar": "TRIMBLE 14551-00-REVA DCA 0011" }, { "attribute": { "name": "antenna_cable_length" }, "date_from": "2000-07-23 07:00:00", "date_to": "2016-07-13 13:30:00", "value_date": null, "value_numeric": 20, "value_varchar": null } ], "item_type": { "name": "antenna" } } }, { "item": { "comment": "Installed on 2001-11-07T08:30Z (1139\/3):\r\nEMP Protector HUBER-SUHNER 34U2.17A\r\nantenna -> ~12 m cable -> EMP Protector\r\nHUBER-SUHNER 34U2.17A -> ~8 m cable -> receiver", "contact_as_owner": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "metadata_custodian", "title": "" }, "date_from": "2000-07-23 07:00:00", "date_to": "2016-07-13 13:30:00", "item_attributes": [ { "attribute": { "name": "radome_type" }, "date_from": "2000-07-23 07:00:00", "date_to": "2016-07-13 13:30:00", "value_date": null, "value_numeric": null, "value_varchar": "UNAV" }, { "attribute": { "name": "serial_number" }, "date_from": "2000-07-23 07:00:00", "date_to": "2016-07-13 13:30:00", "value_date": null, "value_numeric": null, "value_varchar": null } ], "item_type": { "name": "radome" } } }, { "item": { "comment": "antenna -> ~12 m cable -> EMP Protector\r\nHUBER-SUHNER 34U2.17A -> ~8 m cable -> receiver.\r\nA 50 mm spacer was inserted between the antenna\r\nand marker, flush with inner ring in BPA. BPA\r\nhas been seriously corroded due to salt-water\r\nconditions in previous installation.", "contact_as_owner": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "metadata_custodian", "title": "" }, "date_from": "2016-07-13 13:30:00", "date_to": "2022-02-24 11:00:00", "item_attributes": [ { "attribute": { "name": "antenna_type" }, "date_from": "2016-07-13 13:30:00", "date_to": "2022-02-24 11:00:00", "value_date": null, "value_numeric": null, "value_varchar": "TRM29659.00" }, { "attribute": { "name": "serial_number" }, "date_from": "2016-07-13 13:30:00", "date_to": "2022-02-24 11:00:00", "value_date": null, "value_numeric": null, "value_varchar": "0220314044" }, { "attribute": { "name": "antenna_reference_point" }, "date_from": "2016-07-13 13:30:00", "date_to": "2022-02-24 11:00:00", "value_date": null, "value_numeric": null, "value_varchar": "BPA" }, { "attribute": { "name": "marker_arp_up_ecc" }, "date_from": "2016-07-13 13:30:00", "date_to": "2022-02-24 11:00:00", "value_date": null, "value_numeric": 0.05, "value_varchar": null }, { "attribute": { "name": "marker_arp_north_ecc" }, "date_from": "2016-07-13 13:30:00", "date_to": "2022-02-24 11:00:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_east_ecc" }, "date_from": "2016-07-13 13:30:00", "date_to": "2022-02-24 11:00:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "alignment_from_true_n" }, "date_from": "2016-07-13 13:30:00", "date_to": "2022-02-24 11:00:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "antenna_cable_type" }, "date_from": "2016-07-13 13:30:00", "date_to": "2022-02-24 11:00:00", "value_date": null, "value_numeric": null, "value_varchar": "TRIMBLE 14551-00-REVA DCA 0011" }, { "attribute": { "name": "antenna_cable_length" }, "date_from": "2016-07-13 13:30:00", "date_to": "2022-02-24 11:00:00", "value_date": null, "value_numeric": 20, "value_varchar": null } ], "item_type": { "name": "antenna" } } }, { "item": { "comment": "antenna -> ~12 m cable -> EMP Protector\r\nHUBER-SUHNER 34U2.17A -> ~8 m cable -> receiver.\r\nA 50 mm spacer was inserted between the antenna\r\nand marker, flush with inner ring in BPA. BPA\r\nhas been seriously corroded due to salt-water\r\nconditions in previous installation.", "contact_as_owner": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "metadata_custodian", "title": "" }, "date_from": "2016-07-13 13:30:00", "date_to": "2022-02-24 11:00:00", "item_attributes": [ { "attribute": { "name": "radome_type" }, "date_from": "2016-07-13 13:30:00", "date_to": "2022-02-24 11:00:00", "value_date": null, "value_numeric": null, "value_varchar": "UNAV" }, { "attribute": { "name": "serial_number" }, "date_from": "2016-07-13 13:30:00", "date_to": "2022-02-24 11:00:00", "value_date": null, "value_numeric": null, "value_varchar": "0220314044" } ], "item_type": { "name": "radome" } } }, { "item": { "comment": "antenna -> 15 m cable -> EMP Protector\r\nHUBER-SUHNER 34U2.17A -> ~8 m cable -> receiver.\r\n", "contact_as_owner": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "metadata_custodian", "title": "" }, "date_from": "2022-02-24 12:00:00", "date_to": null, "item_attributes": [ { "attribute": { "name": "antenna_type" }, "date_from": "2022-02-24 12:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": "SEPCHOKE_B3E6" }, { "attribute": { "name": "serial_number" }, "date_from": "2022-02-24 12:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": "5741" }, { "attribute": { "name": "antenna_reference_point" }, "date_from": "2022-02-24 12:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": "BPA" }, { "attribute": { "name": "marker_arp_up_ecc" }, "date_from": "2022-02-24 12:00:00", "date_to": null, "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_north_ecc" }, "date_from": "2022-02-24 12:00:00", "date_to": null, "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_east_ecc" }, "date_from": "2022-02-24 12:00:00", "date_to": null, "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "alignment_from_true_n" }, "date_from": "2022-02-24 12:00:00", "date_to": null, "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "antenna_cable_type" }, "date_from": "2022-02-24 12:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": "PRO PUR coaxkabel Low loss N-m to N-m (RG214)" }, { "attribute": { "name": "antenna_cable_length" }, "date_from": "2022-02-24 12:00:00", "date_to": null, "value_date": null, "value_numeric": 23, "value_varchar": null } ], "item_type": { "name": "antenna" } } }, { "item": { "comment": "antenna -> 15 m cable -> EMP Protector\r\nHUBER-SUHNER 34U2.17A -> ~8 m cable -> receiver.\r\n", "contact_as_owner": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "metadata_custodian", "title": "" }, "date_from": "2022-02-24 12:00:00", "date_to": null, "item_attributes": [ { "attribute": { "name": "radome_type" }, "date_from": "2022-02-24 12:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": "SPKE" }, { "attribute": { "name": "serial_number" }, "date_from": "2022-02-24 12:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": null } ], "item_type": { "name": "radome" } } }, { "item": { "comment": null, "contact_as_owner": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "metadata_custodian", "title": "" }, "date_from": "1994-12-30 00:00:00", "date_to": null, "item_attributes": [ { "attribute": { "name": "standard_type" }, "date_from": "1994-12-30 00:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": "INTERNAL" }, { "attribute": { "name": "input_frequency" }, "date_from": "1994-12-30 00:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": null } ], "item_type": { "name": "frequency_standard" } } }, { "item": { "comment": "Electronics: Vaisala Humidity and Temperature\r\nTransmitter HMP233; HUMICAP H-Sensor.\r\n1% accur. between 0 and 90% RH.\r\n2% accur. between 90 and 100% RH.", "contact_as_owner": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "DUT", "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)", "infos": "", "name": "Delft University of Technology", "www": "" }, "comment": "", "email": "gnss-citg@tudelft.nl", "name": "TU Delft GNSS team", "phone": "+31 15 2784907", "role": "metadata_custodian", "title": "" }, 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