Sökning: "TLE"

Visar resultat 1 - 5 av 15 uppsatser innehållade ordet TLE.

  1. 1. Initial Orbit Determination of Resident Space Objects From A Passive Optical Imaging System: : Application to Space Situational Awareness

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Jessica McKenna; [2023]
    Nyckelord :Space Situational Awareness; Space Science; Angles-Only Initial Orbit Determination;

    Sammanfattning : The probability of satellite collisions and disintegrations cluttering the near-Earth orbital environmentis ever-growing. This is especially true for the congested Low Earth Orbit (LEO) regime; once a critical density of objects is reached, a collisional cascading is projected to generate runaway growth of theorbital population. LÄS MER

  3. 2. Investigations of the Transient Luminous Events with the small satellites, balloons and ground-based instruments

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

    Författare :Safura Mirzayeva; [2022]
    Nyckelord :TLE; sprite; jet; elve; halo; lightning; lighting detection; upper-atmospheric lightning; lightning location; nanosatellite; CubeSat;

    Sammanfattning : The lightning is the natural source of electromagnetic radiation. It is an atmospheric electrical discharge.  However, since recent times, it was discovered that there are other types of lightning besides those that are visible to the naked eye. They are called TLEs (Transient Luminous Event) and take place above the clouds during thunderstorms. LÄS MER

  4. 3. Feasibility study of initial orbit determination with open astronomical data

    Master-uppsats, KTH/Fysik

    Författare :Linn Mattsson; [2022]
    Nyckelord :Space situational awareness; Space surveillance and tracking; Image analyse; Streak detection algorithm; Initial orbit determination; Rymdlägesbild; Bildanalys; Algoritm för streck detektering; Initial banbestämning;

    Sammanfattning : In this report I present a feasibility study of using open astronomical data to make Initial Orbit Determination (IOD) for Resident Space Objects (RSO) appearing as streaks in telescope images. The purpose is to contribute to Space Surveillance and Tracking (SST) for maintaining Space Situation Awareness (SSA). LÄS MER

  5. 4. Forward Modelling of Ground Based SST Telescope Images

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Anna Hidalgo Larsson; [2021]
    Nyckelord :SST; SSA; Satellite; Telescope; CMOS; TLE; Image Simulator; Space Imagery; Space Debris; Tracklet; Rymdlägesbild; satellit; teleskop; CMOS; TLE; bildsimulator; rymdbilder; rymdskrot; satellitpass.;

    Sammanfattning : Space debris is becoming an increased threat to the future use of space orbits. In order to counteract this threat, the field of Space Situational Awareness (SSA), and the sub-field Space Surveillance and Tracking (SST), have been developed to gather knowledge about the space debris and satellites surrounding Earth. LÄS MER

  7. 5. Simulation of Precise Automatic Radio Frequency GroundStation Tracking For S-Band Satellites

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Akila Wajirakumara; [2021]
    Nyckelord :;

    Sammanfattning : Satellites are often known for possessing invariable motion causing its apparent position to drift in the sky from the perspective of a ground station. If these irregular drifts are not compensated, the performance of the communication link would be greatly affected. Hence, the satellite motion has to be tracked by the ground station antenna. LÄS MER