Welcome to Luciano Iess's Homepage

On the left: the BepiColombo spacecraft, the MORE - Mercury Orbiter Radioscience Experiment - logo and team. BepiColombo is an ESA mission dedicated to the exploratcion of Mercury. Launch: 2014.

Messages

Exams June 12: click here to view the sequence of exams.

Please send an email in case you will not take the exam!

Be advised that the times shown in the file are only approximate.  

  

**** Important notice: 

**** June 29 exams session cancelled

Dear Students,

June 29 exams session has been removed from Infostud. It is not possible to schedule other exams in June after Friday 12.) The students who already signed up for that session may take the exam on other dates in July. The earliest opportunity is July 6-8. I may schedule one or two additional exam days in July. Should you wish to take advantage of this opportunity, please email me.

Luciano Iess

  

**** Space Missions and Systems 2014/2015 - Homework #2:

Click here to view the results.

Students admitted to the exams in simplified mode must have a "yes" in the last column.

  

Click here to download the test

The solution (a pdf file) and the source code must be emailed by Sunday May 31 23:59 UTC to luciano.iess@uniroma1.it AND mircojunior.mariani@uniroma1.it. NO EXCEPTIONS!

Suggestions and remarks: Be concise and go right to the point. Plots convey information very effectively. Including a working source code is mandatory.

 

**** Exams calendar for June and July: click the link on the side

YOU MAY REGISTER NOW FOR NEXT WEEK EXAMS. 

  

**** Space Missions and Systems

Tuesday's lecture has been moved to Monday (May 25) at 12:00 pm

Due to the visit to Avio, Friday's lecture will be moved to Thursday at 15:45. We will present an example of attitude control, helpful in the solution of the second home test.

The second home test will be published on this web site ***Wednesday*** afternoon at 3 pm. 

Deadline for submission is Sunday at 23:59 UTC.

 

MSS 2105 Challenge - Winners:

- Gaeta 3 pt

- Di Ruscio 2 pt

- Panicucci 2 pt

Congratulations to all participants (34)!

Caputo, Iovallo, Mangionami, Moriero, Palombi, Pica, and Piermarini passed the test.

MSS 2015 Challenge (this is a new file specifying some missing units - 4:46 pm May 8).

range.txt

range-rate.txt

The solution (a pdf file) and the source code must be emailed by Sunday May 10 23:59 UTC to luciano.iess@uniroma1.it AND paolo.racioppa@uniroma1.it AND luigi.imperi@uniroma1.it. NO EXCEPTIONS! 

If you have questions, Paolo Racioppa (06 44585976) and/or I will be available till 7 pm, today, May 8. Good luck to all participants!

Clarifications (we will try to put all of them online):

1) h is the altitude above the surface.

2) You are free to take the atmosphere as non-rotating. This leads to a minor simplification of the problem. In general, when some information is not provided, make reasonable assumptions. 

  

  

**** Space Missions and Systems

Matlab code for the coherent demodulator

**** Space Missions and Systems

**** 2014/2015- Homework #1:

Evaluations (pdf)

Test

TrackA.txt

TrackB.txt

The solution (a pdf file) and the source code must be emailed by Sunday Apr. 19 21:59 UTC to luciano.iess@uniroma1.it AND paolo.racioppa@uniroma1.it. NO EXCEPTIONS!

Suggestions and remarks: Be concise and go right to the point. Plots convey information very effectively. Including a working source code is mandatory.

  

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Space missions and systems 2013/2014

MSS 2014 - Home test n. 2 

Email the code and the report to luciano.iess@uniroma1.it AND mircojunior.mariani@uniroma1.it by Friday May 30 23:59:59.

Students passing both home tests (or the challenge and the second test) will be entitled to take the exam in a simplified mode.

Clarification #1: you may neglect the torque variations due to the eclipses.

Clarification #2: if needed, you may use this matlab routine to solve Kepler's equation.  

Clarification #3: The angular momentum storage capacity is 29.32 N-m-s and not 22.6 N-m-s.

Clarification #4: The minimum time requirement has to be intended loosely. Any design of the control system attaining the required attitude in a reasonable time is acceptable.

 

  

*** Challenge MSS 2014 - Results

- Mario Tindaro Migliorino - 2 pt.

- Michela Archi - 1 pt.

- Renato Volpe - 1 pt.

- Filippo Silvestrucci - 1 pt.

- Andrea Antolino - 1 pt.

Congratulations to all participants. The solution will be presented on Monday May 19, 1:30 pm, at the Radio Science Lab. 

 

*** Guest Lectures on Space Missions:

R.T. Mitchell, Jet Propulsion Laboratory (ret.), Former Project Manager of the Galileo and Cassini missions 

- Tuesday May 13, 8:30-10:00 am, room 39

- Wednesday May 13, 12:00-1:30 pm, room 39

- Thursday May 13, 10:15-11:45 am, room *********  39  ********

Downoad Slides (zipped file)

 

 

Challenge MSS 2014  ****WARNING (May 9, h.19:30) : The first guess value of the GM must be set to 401500 km3/s2 and not to 398500 km3/s2 as reported in the text of the challenge. ****

Observables:   track_GS1.txt    track_GS2.txt

Email the code and the report to luciano.iess@uniroma1.it AND paolo.racioppa@uniroma1.it by Sunday May 11 23:59:59 UTC.

Students who did not pass the first test can take part in the challenge. The challenge is valid as a backup test. The deadline is unchanged (no extension this time).

 

Home Test 1 (revised) (students passing both tests are eligible to take the final exam in a simplified mode)

Observable quantities (trackfile.txt) 

*** Email the code (Matlab, Fortran, C ...) and a short note containing the procedure, the solution and the plots  to luciano.iess@uniroma1.it AND paolo.racioppa@uniroma1.it by midnight Sunday Apr. 27, 2014.  

*** Updated List of received reports by midnight Sunday Apr. 27, 2014 ***

List of Received Reports (Updated)

*** Home Test 1 Results ***

Home Test 1 Results

Students who did not pass the first test can take part in the challenge. The challenge is valid as a backup test.

 

** Follow the link on the side to know the dates of examination sessions.

** Dates of home tests and competition:

     - Apr. 23-27 (home test 1)

     - May. 20-24 (home test 2)

     - May 9-11 (competition)

 

** Space Environment and Instrumentation: The updated class notes 

- Space_Env_Instr_2014_1.pdf

- Space_Env_Instr_2014_2.pdf

- phase_amplitude.m (matlab file)

- quadrupole_eig.m (matlab file)

may be downloaded from the link Class Notes.

 

** Space Missions and Systems: The updated class notes

- Missioni_Sist_Spa_0_2014.pdf

- Missioni_Sist_Spa_1_2014.pdf

- Missioni_Sist_Spa_2_2014.pdf  (only minor typos corrected)

- Missioni_Sist_Spa_3_2014.pdf  (some typos corrected)

may be downloaded from the link Class Notes. Please consider also the auxiliary slides Normal_Distributions.pdf.

  

 

For updated information you may follow me on Twitter (luciano_iess)

 

*** Seminars at Beijing Institute of Tracking and Telecommunications Technology (BITTT):

Seminar 1: Deep Space Navigation Systems: Where Do We Stand?

Seminar 2: The European Delta-DOR Correlator

Seminar 3: BepiColombo, the ESA Mission To Mercury; MORE: Geodesy, Geophysics, Navigation

Seminar 4 and 5: The Scientific Use of Deep Space Tracking Systems; Radio Science in Deep Space Missions

***Tour of Robledo's DNS facilities. The visit to the Robledo and Cebreros tracking complexes was an interesting and profitable experience for all of us. Follow the link to see some photos. 

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Frequently Asked Question (FAQ)

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Downloads

Relativity in the Global positioning System by N. Ashby

The rotation of LAGEOS

Storm on Saturn's North pole