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Ispen Safrel
Jurusan Teknik Sipil, Fakultas Teknik, Universitas Negeri Semarang (UNNES)
Civil Engineering, Building, Construction & Architecture

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EVALUASI TITIK KONTROL TINGGI UNIVERSITAS NEGERI SEMARANG DENGAN METODE PENGUKURAN KERANGKA DASAR VERTIKAL BENCH MARK (BM) Safrel, Ispen
Jurnal Teknik Sipil dan Perencanaan Vol 12, No 2 (2010): Jurnal Teknik Sipil & Perencanaan
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstract: In 2009, State University of Semarang (UNNES) had engaged in the measurement of the Framework  for  the  Horizontal  and  Vertical  Basic  Framework  using  Global  Positioning  Systems (GPS)  geodetic  type  and  installation  of  two  bench  mark  (BM),  however  the  height  of  its development  (Z)  in a  region on  the surface of  the earth always changing and growing discourse according to some, especially for the city of Semarang itself reportedly decreased ± 5 cm from the average sea  level (MSL) each year. What about  the height of Campus UNNES have now?,  In  this study need to be investigated how much elevation change from a position (Unnes campus) in 2010. Measurement of vertical control framework BM Unnes tied to the High Point Geodesy (TTG) with a height of 221 004 449 number MSL in the area "Ada Supermarket" Banyumanik. Evaluation results of GPS measurements with the High Point of the ellipsoid existing high molecular weight 223 147 ± 02  UNNES  the  MSL  and  after  going  through  the  process  of  measurement  data  processing terrestrial high point  for BM 02 219 237 ± Unnes  is MSL, so  that we  find  the comparison between BM 02 Unnes ellipsoid point with results measurement Keywords: control points, the basic framework of vertical, bench markAbstrak:  Tahun  2009  Universitas  Negeri  Semarang  (UNNES)  telah  melakukan  kegiatan pengukuran Kerangka Dasar Horizontal dan Kerangka Dasar Vertikal dengan menggunakan Global Positioning  Systems  (GPS)  tipe  Geodetik  dan  pemasangan  2  bench  mark  (BM)  Namun  pada perkembangannya  ketinggian  (Z)  di  suatu  wilayah  dipermukaan  bumi  selalu  berubah5ubah  dan menurut  beberapa  wacana  yang  berkembang,  khusus  untuk  wilayah  kota  semarang  sendiri dikabarkan  mengalami  penurunan  ±  5  cm  dari  rata5rata  muka  air  laut  (MSL)  setiap  tahunnya. Bagaimana  dengan  ketinggian  Kampus  UNNES  Sekaran  ?,  Dalam  penelitian  ini  perlu  diteliti seberapa  besar  perubahan  ketinggian  dari  suatu  posisi  (kampus  Unnes)  pada  tahun  2010. Pengukuran kerangka kontrol vertikal BM Unnes diikatkan pada Titik Tinggi Geodesi (TTG) nomor 449  dengan  ketinggian  221.004  MSL  di  daerah  ”Ada  Swalayan”  Banyumanik.  Evaluasi  hasil pengukuran dengan GPS Titik Tinggi dari  tinggi ellipsoid eksisting BM 02 UNNES yaitu ± 223.147 MSL dan setelah melalui proses pengolahan data dari pengukuran titik tinggi terestris untuk BM 02 Unnes  adalah  ±  219.237  MSL,  sehingga  kita  dapati  perbandingan  antara  titik  ellipsoid  BM  02 Unnes dengan hasil pengukuran Kata kunci : titik kontrol, kerangka dasar vertikal, bench mark
Accuracy Comparison between GPS Real Time Kinematic (RTK) Method and Total Station to Determine The Coordinate of An Area Safrel, Ispen; Julianto, Eko Nugroho; Usman, Nur Qudus
Jurnal Teknik Sipil dan Perencanaan Vol 20, No 2 (2018): Jurnal Teknik Sipil & Perencanaan
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v20i2.16284

Abstract

Abstract. Survey with GPS Real Time Kinematic (RTK) has the advantage of being faster and easier than the total station, but on the other hand the accuracy of GPS Real Time Kinematic (RTK) is considered lacking. This study was to determine the comparison of accuracy and efficiency of measuring land parcels using a total station and GPS Real Time Kinematic (RTK) method. The research location is at the Universitas Negeri Semarang campus by selecting areas that are open or unobstructed to satellites and congested areas or which have many obstacles to satellites. The results of this study indicate that for open areas, measurement with GPS Real Time Kinematic (RTK) method reaches a horizontal accuracy of 0.040 m with a time of 16 minutes 16 seconds. While the measurement using a horizontal accuracy of 0.00 Total Station with a length of time of 26 minutes 47 seconds. For areas that are densely measured, GPS Real Time Kinematic (RTK) achieves horizontal accuracy of 10.053 m with a length of time of 39 minutes 27 seconds. While the measurement using a precision horizontal Total Station 0.00 with the length of time 25 minutes 41 seconds.
High Accuracy Geodetic Control Point Measurement Using GPS Geodetic With Static Methods Julianto, Eko Nugroho; Safrel, Ispen; Taveriyanto, Arie
Jurnal Teknik Sipil dan Perencanaan Vol 20, No 2 (2018): Jurnal Teknik Sipil & Perencanaan
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v20i2.16300

Abstract

Abstract. The quality of the coordinates of the points in a generally horizontal control network will be influenced by many factors, such as the system equipment used for measuring / observation, the network geometry, measurement strategies / observation, as well as data processing strategy implemented. Using development of the GPS satellite system, since 1989, the network provision of horizontal control points in Indonesia generally relies on the GPS satellite observations. One way of measuring geodetic control points with high accuracy is using geodetic GPS. Measurement of geodetic control points required as a control in the execution of the work and as a correction coordinate measurement of the position of a measurement object with a high degree of accuracy (± 1 cm). How many measurement methods that can be done. This research conducted measurement using static method. Static surveys are used to determine the coordinates of the control points are relatively distant from each other as well as order accuracy requires relatively higher. The measurement results obtained coordinate data for point 1 is 6 ° 57 '31.92207 "LS; 109 ° 38 '32.25194 "BT; high (ellipsoid) 34 320 m and point 2 is 6 ° 57 '33.59086 "LS; 109 ° 38 '37.87710 "BT; high (ellipsoid) 36 235 m.
EVALUASI TITIK KONTROL TINGGI UNIVERSITAS NEGERI SEMARANG DENGAN METODE PENGUKURAN KERANGKA DASAR VERTIKAL BENCH MARK (BM) Safrel, Ispen
Jurnal Teknik Sipil dan Perencanaan Vol 12, No 2 (2010): Jurnal Teknik Sipil & Perencanaan
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v12i2.1347

Abstract

Abstract: In 2009, State University of Semarang (UNNES) had engaged in the measurement of the Framework  for  the  Horizontal  and  Vertical  Basic  Framework  using  Global  Positioning  Systems (GPS)  geodetic  type  and  installation  of  two  bench  mark  (BM),  however  the  height  of  its development  (Z)  in a  region on  the surface of  the earth always changing and growing discourse according to some, especially for the city of Semarang itself reportedly decreased ± 5 cm from the average sea  level (MSL) each year. What about  the height of Campus UNNES have now?,  In  this study need to be investigated how much elevation change from a position (Unnes campus) in 2010. Measurement of vertical control framework BM Unnes tied to the High Point Geodesy (TTG) with a height of 221 004 449 number MSL in the area "Ada Supermarket" Banyumanik. Evaluation results of GPS measurements with the High Point of the ellipsoid existing high molecular weight 223 147 ± 02  UNNES  the  MSL  and  after  going  through  the  process  of  measurement  data  processing terrestrial high point  for BM 02 219 237 ± Unnes  is MSL, so  that we  find  the comparison between BM 02 Unnes ellipsoid point with results measurement Keywords: control points, the basic framework of vertical, bench markAbstrak:  Tahun  2009  Universitas  Negeri  Semarang  (UNNES)  telah  melakukan  kegiatan pengukuran Kerangka Dasar Horizontal dan Kerangka Dasar Vertikal dengan menggunakan Global Positioning  Systems  (GPS)  tipe  Geodetik  dan  pemasangan  2  bench  mark  (BM)  Namun  pada perkembangannya  ketinggian  (Z)  di  suatu  wilayah  dipermukaan  bumi  selalu  berubah5ubah  dan menurut  beberapa  wacana  yang  berkembang,  khusus  untuk  wilayah  kota  semarang  sendiri dikabarkan  mengalami  penurunan  ±  5  cm  dari  rata5rata  muka  air  laut  (MSL)  setiap  tahunnya. Bagaimana  dengan  ketinggian  Kampus  UNNES  Sekaran  ?,  Dalam  penelitian  ini  perlu  diteliti seberapa  besar  perubahan  ketinggian  dari  suatu  posisi  (kampus  Unnes)  pada  tahun  2010. Pengukuran kerangka kontrol vertikal BM Unnes diikatkan pada Titik Tinggi Geodesi (TTG) nomor 449  dengan  ketinggian  221.004  MSL  di  daerah  ”Ada  Swalayan”  Banyumanik.  Evaluasi  hasil pengukuran dengan GPS Titik Tinggi dari  tinggi ellipsoid eksisting BM 02 UNNES yaitu ± 223.147 MSL dan setelah melalui proses pengolahan data dari pengukuran titik tinggi terestris untuk BM 02 Unnes  adalah  ±  219.237  MSL,  sehingga  kita  dapati  perbandingan  antara  titik  ellipsoid  BM  02 Unnes dengan hasil pengukuran Kata kunci : titik kontrol, kerangka dasar vertikal, bench mark
EVALUASI TITIK KONTROL TINGGI UNIVERSITAS NEGERI SEMARANG DENGAN METODE PENGUKURAN KERANGKA DASAR VERTIKAL BENCH MARK (BM) Safrel, Ispen
Jurnal Teknik Sipil dan Perencanaan Vol 12, No 2 (2010): Jurnal Teknik Sipil & Perencanaan
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v12i2.1347

Abstract

Abstract: In 2009, State University of Semarang (UNNES) had engaged in the measurement of the Framework  for  the  Horizontal  and  Vertical  Basic  Framework  using  Global  Positioning  Systems (GPS)  geodetic  type  and  installation  of  two  bench  mark  (BM),  however  the  height  of  its development  (Z)  in a  region on  the surface of  the earth always changing and growing discourse according to some, especially for the city of Semarang itself reportedly decreased ± 5 cm from the average sea  level (MSL) each year. What about  the height of Campus UNNES have now?,  In  this study need to be investigated how much elevation change from a position (Unnes campus) in 2010. Measurement of vertical control framework BM Unnes tied to the High Point Geodesy (TTG) with a height of 221 004 449 number MSL in the area "Ada Supermarket" Banyumanik. Evaluation results of GPS measurements with the High Point of the ellipsoid existing high molecular weight 223 147 ± 02  UNNES  the  MSL  and  after  going  through  the  process  of  measurement  data  processing terrestrial high point  for BM 02 219 237 ± Unnes  is MSL, so  that we  find  the comparison between BM 02 Unnes ellipsoid point with results measurement Keywords: control points, the basic framework of vertical, bench markAbstrak:  Tahun  2009  Universitas  Negeri  Semarang  (UNNES)  telah  melakukan  kegiatan pengukuran Kerangka Dasar Horizontal dan Kerangka Dasar Vertikal dengan menggunakan Global Positioning  Systems  (GPS)  tipe  Geodetik  dan  pemasangan  2  bench  mark  (BM)  Namun  pada perkembangannya  ketinggian  (Z)  di  suatu  wilayah  dipermukaan  bumi  selalu  berubah5ubah  dan menurut  beberapa  wacana  yang  berkembang,  khusus  untuk  wilayah  kota  semarang  sendiri dikabarkan  mengalami  penurunan  ±  5  cm  dari  rata5rata  muka  air  laut  (MSL)  setiap  tahunnya. Bagaimana  dengan  ketinggian  Kampus  UNNES  Sekaran  ?,  Dalam  penelitian  ini  perlu  diteliti seberapa  besar  perubahan  ketinggian  dari  suatu  posisi  (kampus  Unnes)  pada  tahun  2010. Pengukuran kerangka kontrol vertikal BM Unnes diikatkan pada Titik Tinggi Geodesi (TTG) nomor 449  dengan  ketinggian  221.004  MSL  di  daerah  ”Ada  Swalayan”  Banyumanik.  Evaluasi  hasil pengukuran dengan GPS Titik Tinggi dari  tinggi ellipsoid eksisting BM 02 UNNES yaitu ± 223.147 MSL dan setelah melalui proses pengolahan data dari pengukuran titik tinggi terestris untuk BM 02 Unnes  adalah  ±  219.237  MSL,  sehingga  kita  dapati  perbandingan  antara  titik  ellipsoid  BM  02 Unnes dengan hasil pengukuran Kata kunci : titik kontrol, kerangka dasar vertikal, bench mark
Accuracy Comparison between GPS Real Time Kinematic (RTK) Method and Total Station to Determine The Coordinate of An Area Safrel, Ispen; Julianto, Eko Nugroho; Usman, Nur Qudus
Jurnal Teknik Sipil dan Perencanaan Vol 20, No 2 (2018)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v20i2.16284

Abstract

Abstract. Survey with GPS Real Time Kinematic (RTK) has the advantage of being faster and easier than the total station, but on the other hand the accuracy of GPS Real Time Kinematic (RTK) is considered lacking. This study was to determine the comparison of accuracy and efficiency of measuring land parcels using a total station and GPS Real Time Kinematic (RTK) method. The research location is at the Universitas Negeri Semarang campus by selecting areas that are open or unobstructed to satellites and congested areas or which have many obstacles to satellites. The results of this study indicate that for open areas, measurement with GPS Real Time Kinematic (RTK) method reaches a horizontal accuracy of 0.040 m with a time of 16 minutes 16 seconds. While the measurement using a horizontal accuracy of 0.00 Total Station with a length of time of 26 minutes 47 seconds. For areas that are densely measured, GPS Real Time Kinematic (RTK) achieves horizontal accuracy of 10.053 m with a length of time of 39 minutes 27 seconds. While the measurement using a precision horizontal Total Station 0.00 with the length of time 25 minutes 41 seconds.
High Accuracy Geodetic Control Point Measurement Using GPS Geodetic With Static Methods Julianto, Eko Nugroho; Safrel, Ispen; Taveriyanto, Arie
Jurnal Teknik Sipil dan Perencanaan Vol 20, No 2 (2018)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v20i2.16300

Abstract

Abstract. The quality of the coordinates of the points in a generally horizontal control network will be influenced by many factors, such as the system equipment used for measuring / observation, the network geometry, measurement strategies / observation, as well as data processing strategy implemented. Using development of the GPS satellite system, since 1989, the network provision of horizontal control points in Indonesia generally relies on the GPS satellite observations. One way of measuring geodetic control points with high accuracy is using geodetic GPS. Measurement of geodetic control points required as a control in the execution of the work and as a correction coordinate measurement of the position of a measurement object with a high degree of accuracy (± 1 cm). How many measurement methods that can be done. This research conducted measurement using static method. Static surveys are used to determine the coordinates of the control points are relatively distant from each other as well as order accuracy requires relatively higher. The measurement results obtained coordinate data for point 1 is 6 ° 57 '31.92207 "LS; 109 ° 38 '32.25194 "BT; high (ellipsoid) 34 320 m and point 2 is 6 ° 57 '33.59086 "LS; 109 ° 38 '37.87710 "BT; high (ellipsoid) 36 235 m.
Co-Authors Arie Taveriyanto, Arie Eko Nugroho Julianto Nur Qudus