Space surveillance systems for close approach management

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Lucia Antonelli
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1 Space surveillance systems for close approach management Università di Bologna Alma Mater Studiorum, Università di Roma La Sapienza CIGC SICRAL Ministero della Difesa

2 Ricercatori Coinvolti Alessandro Ceruti, Tommaso Cardona Università Di Bologna Alma Mater Studiorum Fabrizio Piergentili, Fabio Santoni, Riccardo Ravaglia, Andrea Spinetti Università Di Roma La Sapienza Alessandro Fusco, Sandro Toderico, CIGC SICRAL Ministero della Difesa

Santoni, Riccardo Ravaglia, Andrea Spinetti Università Di Roma La

3 Collaborazioni UNIBO nel campo della sorveglianza per Space Debris UNIBO ASI studio per la realizzazione di un osservatorio per la sorveglianza spaziale presso la base spaziale di Malindi UNIBO IRA Realizzazione di data fusion tra misure ottiche e radar Collaborazioni Nazionali ed internazionali

spaziale presso la base spaziale di Malindi UNIBO IRA Realizzazione di

4 Collaborazioni UNIBO nel campo della sorveglianza per Space Debris UNIBO UNIROMA1 DIFESA Analisi di close approach in GEO Accordo UNIBO CIGC SICRAL UNIBO University of Michigan Utilizzo del telescopio da 6,5 metri per spettrometria UNIBO INAF UNIROMA1 Osservazioni spettrometriche dal telescopio di Loiano Collaborazioni Nazionali ed internazionali

Michigan Utilizzo del telescopio da 6,5 metri per spettrometria UNIBO INAF UNIROMA1

5 Algorithm for measurements calibration: GPS satellite validation Along-Track standard deviation: σ=3.5 arcsec Cross-Track standard deviation: σ=3.3 arcsec Risultati ottenuti

6 Maneuvering GEO, SICRAL 1-B, 7 September ORBIT DETERMINATIONI: 7 September :00:00 UTC SICRAL 1-B SdR j2000 TLE: Estimated state: X= [km] X= [km] Y= [km] Y= [km] Z= [km] Z= [km] VX= [km/s] VX= [km/s] VY= [km/s] VY= [km/s] VZ= [km/s] VZ= [km/s] e= 2.2e-4 e= 2.71e-4 i= deg i= deg Ω= deg Ω= deg Risultati ottenuti

70509 [km] Z= -129.84135 [km] VX= 0.142 [km/s] VX= 0.1417 [km/s] VY= 3.0719 [km/s] VY= 3.07179 [km/s] VZ= -0.

7 CLOSE APPROACH GORIZONT-COSMOS Close Approach between GORIZONT 11 e COSMOS 1738 highlighted by SOCRATES on the 20 of December 2011 based on TLE of the 15 and 16 December COSMOS 1738 Probabilità Istante CA Distanza Minima GORIZONT * :30 ca. UTC km Estimate on 2 nights ( 21 and 22 December 2011 Satellite Numero Foto Tempo Misure GORIZONT h 15min + 20 min COSMOS h 20min + 25min Risultati ottenuti

GORIZONT 11 3.543*10 6 22 12 2011 23:30 ca. UTC 2.

8 CLOSE APPROACH GORIZONT-COSMOS Close Approach between GORIZONT 11 e COSMOS 1738 highlighted by SOCRATES on the 20 of December 2011 based on TLE of the 15 and 16 COSMOS 1738 December Probabilità Istante CA Distanza Minima GORIZONT * :30 ca. UTC km Estimate on 2 nights ( 21 and 22 December 2011 Satellite Numero Foto Tempo Misure GORIZONT h 15min + 20 min COSMOS h 20min + 25min Risultati ottenuti

9 CLOSE APPROACH GORIZONT-COSMOS Close Approach between GORIZONT 11 e COSMOS 1738 highlighted by SOCRATES on the 20 of December 2011 based on TLE of the 15 and 16 COSMOS 1738 December Probabilità Istante CA Distanza Minima GORIZONT * :30 ca. UTC km Estimate on 2 nights ( 21 and 22 December 2011 Satellite Numero Foto Tempo Misure GORIZONT h 15min + 20 min COSMOS h 20min + 25min Risultati ottenuti

10 CLOSE APPROACH LEO COSMO SKY-MED Observations of object involved in the close approach with COSMO SkyMed 3 Object images taken in two consecutive images Preliminary estimate of the dimensions and rotational state of the object Risultati ottenuti

images taken in two consecutive images Preliminary estimate

11 DATABASE WITH ABOUT MEASUREMENTS Risultati ottenuti

12 ALMASCOPE Telescope 25 cm f/4 in newtonian configuration CCD Kaf1600E sensor, 1024x1536 pixels, each pixel is 9x9 micron (total chipsize 9.2x13.8 mm) Mount German equatorial The field of view is of about 1 degree ALMASCOPE 2 Telescope 25 cm f/3 in modified cassegrain configuration CCD Kaf3200E sensor, 2184x1510 pixels, each pixel is 6.8x6.8 micron (total chipsize 14.85x10.26 mm) Mount German equatorial The field of view is of about 1.4 degree Strumentazione

8 mm) Mount German equatorial The field of view is of about 1 degree ALMASCOPE 2 Telescope 25 cm f/3 in modified

13 2.5 METER FOCAL LENGTH TELESCOPE TELESCOPE GRUPPO ASTROFILI ANTARES : Ø= 50 CM FOCAL = 2.5 M GPS Along-Track and Cross-Track standard deviation: σ = 1.5 arcsec (bin) σ = 0.8 arcsec (no bin) Strumentazione

14 LEO tracking from two different sites 2 site No Measurements 1 site Preliminary data 10 km 2 sites OD 0,1 km 1 site OD 1 km Potenzialità per sorveglianza spaziale

15 LEO tracking from two different sites 2 site No Measurements 1 site Preliminary data 10 km 2 sites OD 0,1 km 1 site OD 1 km Potenzialità per sorveglianza spaziale

16 Software for image analysis Software for observations coordination Potenzialità per sorveglianza spaziale

17 SSA possible contribution Observations: contribute with our observatories to observation campaign Images preprocessing: Automatic objects identification (on the basis of different observation strategies implemented ) Automatic angular measurements of the objects Measurements calibration Radar and Optical measurements data fusion Simultaneous optical measurements data fusion Hardware Innovative mount: Project funded by FILAS Regione Lazio to produce the prototype of an innovative mount with high performances in terms of accuracy, stability and fast motion: Decreasing of the number of mechanical components:: Increasing of the pointing accuracy and motion rapidity, Structural design performed by using Aerospace techniques Vibration control and analysis, Inertia optimization, Innovative material utilization Collaboration with amateurs and astronomers Systems friendly user, size reduction, High efficiency control loop Contributi a livello europeo

Innovative mount: Project funded by FILAS Regione Lazio to produce the prototype of an innovative mount with high performances in terms of accuracy, stability and fast motion: Decreasing of the

18 Software: TOMCAT TOols for Management of Close Approach Threats Hardware: mount Contributi a livello europeo

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