Welcome to Luciano Iess's Homepage

On the left: the JUNO mission (NASA) was launched on 5 agosto 2011 e and it will be orbited around Jupiter in 2017. Its main purposes are the study of the atmosphere and of the interna structure of the planet. On the centre: artist view of the Cassini and Huygens probes at Saturn. On the right: Saturn almost at equinox, as seen from Cassini (ISS Cassini).

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*** Exams July 25 - 10 am  

NEW: (Updated list) List of students and sequence (times are approximate)

Should you decide not to take the exam, please notify me ASAP by email! 

Location: Teacher's office, cloister terrace, NW corner, 10 am.

 

*** Second home test (updated lists!!):

Results

Students admitted to the exam in simplified mode

  

**** Space Missions and Systems 2015/2016 - Homework #2:

Click here to download the test

The solution (a pdf file) and the source code must be emailed by Sunday May 29 12:00:00 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.

Clarifications

- Which torques shall be considered? This is by far the most frequent question.  The simple answer is: all that you think may matter! You know already from the Space Flight Mechanics course the torques that are generally considered and how to compute them. But if you wish to evaluate exotic stuff such as the tidal torque from the galactic center, feel free to do that. :)

Be confident in what you learnt and use your knowledge and intuition to address what has not been explicitly indicated. Explain your approach.

 

*** Challenge 2016 - Winners 

- Martini: 2 pt

- Cappuccio: 1 pt

Congratulations to all participants! 

 

*** An interesting link: Cassini behind the scenes

 

*** Space Missions and Systems Challenge 2016 !!!!!!!!!!!!!!!

Challenge

Range data

Range rate data

The solution (a pdf file) and the source code must be emailed by May 8, 23:59:59 TAI, to luciano.iess@uniroma1.it AND luigi.imperi@uniroma1.it AND daniele.durante@uniroma1.it. NO EXCEPTIONS!

GOOD LUCK!

 

*** First home test: Results 

Tests marked with a " * ": contact teacher's assistants.

Students who failed the home test can gain credits by solving the upcoming challenge.   

 

 

**** Space Missions and Systems 2015/2016 - Homework #1:

#### DEADLINE EXTENDED

Click here to download the test

Click here to download the data

The solution (a pdf file) and the source code must be emailed by Wednesday April 20th 20:00:00 UTC to luciano.iess@uniroma1.it AND luigi.imperi@uniroma1.it AND daniele.durante@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.

 

Clarification: Estimate the risk of collision on the basis of the information conveyed by the covariance matrix. I am expecting qualitative answers, not a rigorous assessment. A rigorous assessment implies the knowledge of the pdf of the ***distance *** between the debris and the ISS at closest approach.

  

*** Class notes update:

The final version of the 2016 class notes will be uploaded on May 31.

 

**** 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.

  

**** Space Missions and Systems

Matlab code for the coherent demodulator

  

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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  ****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).

 

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

Ringside with Titan and Dione