Other than GFZ, the development of GGM in the early period of Champ mission was also accomplished by geodesists at the Technical University of Munich (TUM). Two versions of Champ GGM was contributed by TUM i.e., TUM-1S (in 2003) and TUM-2Sp (in 2005).

• TUM-1S utilized half year of Champ data (Gerlach et al, 2003)
• The methodology used is the energy integral technique as opposed to the analysis of orbit perturbation (which was used in the classical approach of gravity field determination)
• While TUM-2Sp used one year of Champ data (Foldvary et al, 2005)
• Methodology employed is the energy balance approach and kinematics Champ orbit

Christian Gerlach is now with Bavarian Academy of Sciences and Humanities, Commission of Geodesy and Glaciology (BAdW) Munchen. He is also with Norwegian U of Life Sciences (supervising MSc Vegard Ophaug in 2013).

Lorant Foldvary is now at Geodesy Dept, TU Budapest (BUTE).

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If we look at the list of GGMs deposited at ICGEM we will noticed the GGM came in various names and one such name is Eigen. Eigen stands for European Improved Gravity model of the Earth by New techniques. Eigen is the GGMs produced as results of a long ‐time close cooperation in the field of global gravity field determination between GFZ Potsdam and GRGS/CNES Toulouse, France.

The development of Eigen began way back in 2002 with the first two sets i.e., Eigen-1 and Eigen-1S. These earlier works on Eigen at GFZ were carried out by Christoph Reigber (at GFZ) and Georges Balmino (at GRGS).

The development of Eigen-1 was highlighted in “Global gravity field recovery using solely GPS tracking and accelerometer data from Champ” available in textbook Earth Gravity Field From Space – from sensors to Earth Sciences, Space Sciences Series of ISSI, Vol 17, Springer 2003.

Eigen-1S is described in “A high quality global gravity field model from Champ Gps tracking data and accelerometry” published in Geophys Res Letter 29, 2002 (available in folder G07). The solution uses three month of Champ data (88 days) from July to Dec 2000.

Eigen-2 can be read in “The Champ-only Earth gravity filed model Eigen-2” appeared in Adv Space Res 31, 2003 (also available in folder G07). Eigen-2 utilized six months data of Champ mission. The data came from two stages i.e., July to Dec 2000 and Sept-Dec 2001.

Eigen-Champ03S “Earth gravity field and seasonal variability from Champ” published in book Earth Observation with Champ – Results from three years in orbit, Springer, 2004.

The later works on Eigen at GFZ (after Reigber) continued with the leading role taken over by another geodesist – Christoph Forste.

Prof Emeritus Christoph Reigber

(PhD 1969, Dipl-Ing 1965 & Habil 1974 TUM)

“Zur Bestimmung des Gravitationsfeldes der Erde aus Satellitenbeobachtungen” – 1969

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Dua staf FGHT – Tuan Haji Ibrahim (Penolong Pendaftar) dan PM Kamaludin Hj Omar bakal bersara wajib. THI mengakhiri perkhidmatan pada 14 Mac manakala PM Din pada pertengahan April. Satu majlis menjelang persaraan mereka diadakan petang tadi. Sebagaimana biasa kedua bakal pesara telah menyampai ucapan ringkas masing2 dalam sesi tersebut.

Foto bersama yang staf diraikan

Foto kenangan bersama PM Kamaluddin

 PM Kamaluddin telah menyumbang tenaga kepakaran geodesi selama 37 tahun kepada UTM dan negara.

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Pada minggu lalu satu kursus pendek telah dianjurkan di FGHT. Kursus tersebut mendedahkan teknologi ukur TLS dan dihadiri oleh beberapa ahli Pejuta (Persatuan Juruukur Tanah Berlesen). Antara yang hadir adalah dua LS yang juga merupakan rakan sekelas waktu di UTM (ketika itu UTM Jalan Gurney).

Bersama LS Mohd Razif (kiri) dan  Shaharuddin Musa (kanan)

Mohd Razif Isha menubuhkan syarikat Juruukur Razif beroperasi di Taman Meru Perdana Ipoh manakala Shaharuddin Musa ialah Prinsipal kepada Jurukur Putra di Taman Ukay Perdana.

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ISPRS was founded in 1910 with its original name was ISP (International Society of Photogrammetry). It first President was Eduard Dolezal from Austria. The Society changed its name to ISPRS in 1980. The term of photogrammetry was first used in published work in 1867 when the art and science of photography itself was still in its infancy. National member is represented by organization in which Malaysia is by Jupem. The official representative of Jupem in ISPRS is Azlim Khan.

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The first photogrammetric plotter model A1 was produced by Wild. That was way back in 1922. The A in A1 is stand for Autograph. Only three units of A1 were produced as prototype version. Then A1 was followed by A2 introduced in 1926. Production of A2 went on for fifteen years until 1941 with twenty-two units were marketed.

A1 (source  – wild)

Wild Autograph A2 (1926)

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Tomorrow Friday Feb 23, a friend of mine will have his viva defense which will starts at 1 o’clock (Stockholm time). Mehdi Joud has completed his thesis entitled “Contribution of satellite geodesy to post-glacial rebound research”. His work is supervised by Professor Lars Sjoberg of Geodesy Dept, KTH Sweden. We (me, Sjoberg and Mehdi) get acquainted during Geoid School program in UTM in 2012. The Geoid School was a one week program at which I became the Chairman of the organizing committee, Sjoberg as the main lecturer and Dr Ramin (from Iran) as the instructor for the lab work. Mehdi came to Geoid School as participant and he is from Iran. He went to KTH one year after the geoid school (in 2013). May you success Mehdi!

Photo taken during lunch of Geoid School in UTM

(From left – me, Sjoberg, Ramin and Mehdi)

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Today is the first day of lecture for the new semester. Actually, the lecture should supposedly starts last week but in consideration of the approaching CNY holiday the arrangement was made to enable students to return late to campus. The first lecture of IS this morning covers on the introduction to IS particularly on the question of what is IS and why IS is been introduced to surveying profession.

Fifteen students attended class today out of twenty one whom registered in the subject.

 The girls seem happy after the long holiday

The boys whom made their day

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Jerman merupakan negara yang aktif melaporkan perkembangan geodetik yang berjalan di sana. Laporan tersebut dikumpulkan oleh Deutsche Geodastiche Kommisson yang kemudiannya menyalurkan ke badan antarabangsa seperti IUGG dan IAG. Lebih menariknya laporan yang disediakan itu boleh dikongsi bersama secara percuma. Sesiapa saja yang berminat boleh memohon salinan report melalui emel dan mereka akan menerima dokumen tersebut melalui pos.

Kini caranya lebih mudah kerana semua laporan disediakan dalam bentuk digital. Maka ia boleh diakses dan sekiranya perlu boleh dimuat turun dalam bentuk salinan pdf.

Report aktiviti bagi tahun 1991-95 (hardcopy version)

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Tugas rutin selepas selesai musim peperiksaan ialah mengisi lapuran CAR untuk setiap subjek yang diajar. Pengisian kali ini merupakan kesinambungan kepada yang pertama kali dibuat pada sesi 2016/17. Amalan sebelumnya ialah menghantar laporan secara manual menggunakan format borang khas.

Paparan OBE dalam talian

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