Sökning: "orbit propagation"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden orbit propagation.

  1. 1. Assisted GNSS Positioning using State Space Corrections

    Master-uppsats, Linköpings universitet/Institutionen för systemteknik

    Författare :Oskar Philipsson; [2023]
    Nyckelord :positioning; GNSS; SSR; EKF; sensor fusion;

    Sammanfattning : Classical GNSS based positioning has accuracy limitations due to many sources oferror. The error sources range from clock errors and orbit errors toerrors due to variations in atmospheric propagation delays. One way to improve GNSSpositioning is to generate real time corrections using a GNSS reference network. LÄS MER

  3. 2. Flight Dynamics Software Industrialisation for Inclined Orbits

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Pierrick Houede; [2023]
    Nyckelord :flight; dynamics; software; FDS; geostationary; orbit; station; keeping; uncontrolled; inclination.;

    Sammanfattning : The geostationary orbit has many applications for Earth observation and telecommunications. Like all satellites, spacecraft in this type of orbit are affected by perturbations. These perturbations can modify the satellites trajectories and, without control, deviate them from their target position. LÄS MER

  4. 3. Constrained Low-Thrust Satellite Formation-Flying Using Relative Orbit Elements : Autonomous Guidance and Control for the NetSat Satellite Formation-Flying Mission

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Lukas Steindorf; [2017]
    Nyckelord :satellite; formation; control; guidance; continuous; low-thrust;

    Sammanfattning : This thesis proposes a continuous low-thrust guidance and control strategy for satellite formation-flying. Stabilizing feedback based on mean relative orbit elements and Lyapunov theory is used. A novel feedback gain matrix inspired by the fuel-optimal impulsive solution is designed to achieve near-optimal fuel consumption. LÄS MER

  5. 4. Relative Orbit Propagation and Control for Satellite Formation Flying using Continuous Low-thrust

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Eric Reinthal; [2017]
    Nyckelord :formation flying; low-thrust; orbit propagation; control; continuous thrust; NetSat; electric propulsion;

    Sammanfattning : For the upcoming formation flying technology demonstration mission NetSat a relative orbit propagator as well as a relative orbit controller were developed. The formation will consist of four equal nano-satellites with an electric propulsion system for orbit correction manoeuvres. LÄS MER

  7. 5. Mission Analysis of the Nanosatellite Sonate

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Nadine Hermannsdörfer; [2017]
    Nyckelord :Mission analysis; sonate; simulation; simulator;

    Sammanfattning : The objective of this thesis is the development of a software application facilitating a quick and extensive mission analysis including all subsystems of the satellite. Furthermore mission analysis for the Sonate mission is done, utilizing the developed program. LÄS MER