Sökning: "sensor blockage"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden sensor blockage.

1. 1. Learning with Synthetically Blocked Images for Sensor Blockage Detection

   Master-uppsats, Linköpings universitet/Datorseende

   Författare :Hoang Tran; [2022]
   Nyckelord :Machine learning; deep learning; neural networks; synthetic data; sensor blockage; domain adaptation;

   Sammanfattning : With the increasing demand for labeled data in machine learning for visual perception tasks, the interest in using synthetically generated data has grown. Due to the existence of a domain gap between synthetic and real data, strategies in domain adaptation are necessary to achieve high performance with models trained on synthetic or mixed data. LÄS MER

3. 2. RayTracing Analysis and Simulator Design of Unmanned Aerial Vehicle Communication and Detection System in Urban Environment

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

   Författare :Jie Huang; [2022]
   Nyckelord :Drone detection; phased array; angle of arrival; MUltiple SIgnal Classification; raytracing; reflection; diffraction; Drönardetektering; fasad array; ankomstvinkel; MUltiple SIgnal Classification; raytracing; reflektion; diffraktion;

   Sammanfattning : In recent years, unmanned aerial vehicles (UAV), also called drones, have experienced a rapid increase, which leads to the concern of illegal use of them. Passive RF is one of the effective ways to detect drones by receiving drones’ communication signals. LÄS MER

4. 3. Ultra-wideband location tracking of mobile devices

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Signaler och system

   Författare :Daniel Hietarinta; [2022]
   Nyckelord :UWB; ultra-wideband; GPS; tracking; locating; wireless communication; low-power; embedded systems; mobile devices; OTG; sensors; sensor fusion; mobile app; Android; dynamic anchors; ranging; C; Python;

   Sammanfattning : Today’s most widely used tracking solutions for consumers involve the Global Positioning System (GPS) which meets most needs when it comes to rough estimation of location. GPS however is limited in accuracy with a horizontal error of around 5 meters and cannot be used in the areas where the satellites cannot provide a strong enough signal e.g. LÄS MER

5. 4. Human Body Presence Detection in Water Environments Using Pulse Coherent Radar

   Kandidat-uppsats, Malmö universitet/Institutionen för datavetenskap och medieteknik (DVMT)

   Författare :Jens Moths; Frotan Frotan; [2022]
   Nyckelord :presence detection; dead man s grip; micro; mmwave; radar; radome; a111; acconeer; radinn; direct leakage; electric surfboard; närvaro detektering; dödmansgrepp; micro; mmwave; radar; radome; a111; acconeer; radinn; direktläckage; elektrisk surfbräda;

   Sammanfattning : New technology in radar opens up new possibilities for cheap and easily integrated human body presence detection. In this work, we aim to make a proof of concept that replaces the "dead man’s grip" on an electric surfboard with a more convenient wireless system based on micro radars. LÄS MER

7. 5. Realistic Modelling of Ultrasound Sensing for Autonomous Vehicles

   Master-uppsats, Linköpings universitet/Elektroniska Kretsar och System

   Författare :Houbo Ni; [2019]
   Nyckelord :Ultrasonic sensor; analog signal; experimental setups; measurement methods; impedance; MATLAB;

   Sammanfattning : Ultrasonic sensors are popular in parking functions in automotive. They are used to measure distances between a car and obstacles near the car. Car companies need to prove that sensors are reliable before using them on vehicles since these sensors are safety-critical. LÄS MER