Sumários

Introduction to orbit mechanics (I)

11 Novembro 2021, 08:00 • André Maria da Silva Dias Moitinho de Almeida

:: Orbit Description
- Ground traces
- Orbit description: Keplerian elements

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

Analysis of the population of orbital objects (part I)

9 Novembro 2021, 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- Online databases
- SGP4 orbit propagator

:: Preparation of the development and analysis environment
- Installation of python 3, datetime, csv and ephem packages
- Jupyter notebook
- TOPCAT

Introduction to Space Systems Engineering (III)

9 Novembro 2021, 08:00 • André Maria da Silva Dias Moitinho de Almeida

:: The space environment and its effects on the mission design (cont)
- Challenges for mechanical engineering
- Challenges for electronic engineering
- Challenges for thermal engineering
- Challenges for vacuum engineering


Introduction to Space Systems Engineering (II)

4 Novembro 2021, 08:00 • André Maria da Silva Dias Moitinho de Almeida

:: The space environment
- Overview

:: Effects on mission design
- Radiation and thermal shielding

- Cleaning
- Effects of weightlessness
- Other

CCD image processing (Part V)

2 Novembro 2021, 09:00 • André Maria da Silva Dias Moitinho de Almeida

:: Correction of shutter effects:
- Tutorial of arithmetic operations with images (and header values): imarith and imexpr
- Creation of images / matrices of shutter opening/closing times

- Examination of shutter images
- Decreasing noise (high frequency component) by
  * Combination of images   
  * Filtering (with boxcar filter)
- Application of shutter corrections to images with exposure times > 0.