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Tech­ni­sche Uni­ver­sität Ber­lin - Fac­ulty VI - Insti­tute of Geodesy and Geo Inform­a­tion Sci­ences / Satel­lite Geodesy

Research Assist­ant (PostDoc) - salary grade E13 TV-L Ber­liner Hoch­schu­len

part-time employ­ment may be pos­sible

Work­ing field:

Within a third-party fun­ded research pro­ject the TU Ber­lin will develop meth­ods for the quan­ti­fic­a­tion of radio source struc­ture effects. Research work will be car­ried out in the field of geo­detic and astro­met­ric Very Long Baseline Inter­fer­o­metry (VLBI) involving con­cepts and meth­ods of radio astro­nom­ical ima­ging and data pro­cessing.
The optical astro­met­ric satel­lite mis­sion Gaia (ESA) is going to provide pos­i­tions and proper motions of radio sources at a level of pre­ci­sion com­par­able to cur­rent astro­met­ric VLBI. It presents a unique oppor­tun­ity of com­par­ison of celes­tial ref­er­ence frames obtained at dif­fer­ent wavelengths. In the pro­ject, the com­par­ison of the Gaia and VLBI celes­tial coordin­ates will be exploited for the determ­in­a­tion of sys­tem­atic ref­er­ence frame effects and tech­nique-depend­ent sys­tem­atic errors. In terms of geo­detic VLBI, the detec­tion, mod­el­ling and cor­rec­tion of radio source struc­ture effects on celes­tial coordin­ates and observ­ables are the first pri­or­ity. The evol­u­tion of intrinsic struc­ture caused by astro­phys­ical pro­cesses can cause very large appar­ent proper motions. The com­par­ison requires an accur­ate mutual ori­ent­a­tion of the VLBI and Gaia ref­er­ence frames. In the focus is the align­ment of the radio and optical wavelengths-based frames. The same celes­tial objects very likely appear at dif­fer­ent pos­i­tions depend­ing on the observed fre­quency, an effect that needs to be con­sidered for the pre­cise radio-optical frame tie.
The vacancy is embed­ded within the VLBI Work­ing Group at Ger­man Research Centre for Geosciences (GFZ) in Pots­dam. The suc­cess­ful applic­ant will work together with two other pro­ject asso­ci­ates as well as with the other pro­ject work­ing group mem­bers at GFZ in Pots­dam.


  • Suc­cess­fully com­pleted uni­versity degree (Mas­ter, Dip­lom or equi­val­ent) and PhD or equi­val­ent in space geodesy or radio astro­nomy or equi­val­ent with focus on VLBI
  • Know­ledge of pro­gram­ming lan­guages such as Mat­Lab, For­tran, Python, C++
  • Ideally a spe­cial­iz­a­tion in the fields of VLBI radio source ima­ging and geo­detic as well as astro­met­ric VLBI
  • Know­ledge of the usage and devel­op­ment of geo­detic VLBI soft­ware pack­ages, such as Calc/Solve and VieVS, as well as exper­i­ence with VLBI ima­ging soft­ware, such as AIPS
  • Know­ledge of the determ­in­a­tion of phase and group delay effects from image-based source struc­ture and the meth­ods to cor­rect for such effects in the geo­detic ana­lysis of VLBI data
  • Good team­work and resi­li­ence
  • Excel­lent com­mand of Eng­lish (writ­ten and spoken)
  • Favor­ably know­ledge in the determ­in­a­tion and ana­lysis of dis­pers­ive VLBI observ­ables and fil­ter meth­ods
  • Will­ing­ness to assume pro­ject respons­ib­il­ity and interest in extend­ing a work group
  • Basic know­ledge of Ger­man

How to ap­ply:

Please send your writ­ten applic­a­tion with the ref­er­ence num­ber and the usual doc­u­ments (in par­tic­u­lar cur­riculum vitae, school and uni­versity cer­ti­fic­ates, work ref­er­ences and pub­lic­a­tion list) to Tech­nis­che Uni­versität Ber­lin - Der Präsid­ent - Fak­ultät VI, Insti­tut für Geodäsie und Geoin­form­a­tion­s­tech­nik, FG Satel­litengeodäsie, Prof. Dr. Schuh, Sekr. H12, Straße des 17. Juni 135, 10623 Ber­lin or by e-mail to

To ensure equal oppor­tun­it­ies between women and men, applic­a­tions by women with the required qual­i­fic­a­tions are expli­citly desired. Qual­i­fied indi­vidu­als with dis­ab­il­it­ies will be favored. The TU Ber­lin val­ues the diversity of its mem­bers and is com­mit­ted to the goals of equal oppor­tun­it­ies.

Please send cop­ies only. Ori­ginal doc­u­ments will not be returned.