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).

Messages

*** 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.   

 

*** Lecture rescheduled!

The Space Missions and Systems lecture on Friday Apr. 22 will end at 11 am, following a request from prof. Onofri. It will be completed ASAP.

 

**** 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:

- Miss_Sist_Spa_1.pdf (4/26/2016)

- Space_Env_Instr_2_2016.pdf (added - 4/15/2016)

- Miss_Sist_Spa_3.pdf (4/12/2016)

- Normal_Distributions.pdf (some additional material on probability and statistics)

- Miss_Sist_eserc_1.pdf (mass-spring example - supporting material for the class demo)

- Space_Env_Instr_1_2016.pdf  (some minor modifications)

 

*** Home tests and challenge (2016) 

- First home test: Apr. 15 

- Second home test: May 20 (tentative)

- Challenge: May 6 (tentative)

 

*** Guest Lectures on Space Missions (2016):

Jan Van Casteren, ESA ESTEC, former Project Manager of the mission BepiColombo to Mercury.

Room 15, May 3 and 4, 10:15-11:45 am 

 

**** 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

 

MSS 2016 Challenge - Winners:

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

Good luck to all participants!

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

  

  

**** 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

Saturn: Glowing Southern Lights