Sumários

Introduction to orbit mechanics (II)

9 Novembro 2023, 11:30 • André Maria da Silva Dias Moitinho de Almeida

:: Orbit types 
- LEO
- GEO
- Molniya
- Polar
- MEO and Satellite constellations

Analysis of the orbital object population (part I)

7 Novembro 2023, 09:00 • André Maria da Silva Dias Moitinho de Almeida

Computational exercise for studying the population of orbital objects described in "Two / Three Line Elements" (TLEs)

:: Orbital data
- Formats: TLEs, xml, etc
- Contents
- Sources: Online databases (Space-Track, Celestrack, ESA Discos)
- SGP orbit propagation

: Analysis of a single object
- Explanation of the ephem and datetime python packages
- Reading a TLE for a single object
- Orbit integration
- Inspection of the output of orbit integration
- Orbit visualisation

Introduction to orbit mechanics (I)

7 Novembro 2023, 08:00 • André Maria da Silva Dias Moitinho de Almeida

:: Orbit Description
- Ground traces
- Orbit description: Keplerian elements
- Orbit Observation and determination:
-Two/Three Line Elements (TLSs)
- Simplified Perturbation models (SGP, SGP4, SDP4, SGP8 and SDP8)

Further reading:
Chapter 4 of Fortescue et al. (Spacecraft Systems Engineering)

Introduction to Space Systems Engineering (I)

2 Novembro 2023, 11:30 • André Maria da Silva Dias Moitinho de Almeida

:: Introduction
- Systemic vision of the space mission
- Space Segment: "Service modules" and "payloads"
- Launchers,
- Ground Segment
- Weight and costs

CCD image processing (Part IV)

31 Outubro 2023, 09:00 • André Maria da Silva Dias Moitinho de Almeida

:: Flatfield correction
- Combination of flat field images for each band.
- Examination of the combined images.
- Identification and fixing of artifacts in the combined flats.
- Application of flat-field corrections.
- Examination of the final images.