Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 7377 for “"Ranging"”.
-
An aircraft ranging device
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1926.
-
Theoretical Limits of Quantum Ranging
… from dedicated measurements, namely active ranging, is crucial in a variety of systems including localization, radar, and lidar. This thesis establishes the quantum limits and determines the quantum advantage provided by single-beam displaced squeezed states in active ranging. Analytical …
-
Planetary radar ranging error analysis.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1971.
-
A fibre optic based ranging sensor
… of technical and industrial applications. Ranging techniques have evolved from geometrical to bulk optical or radar methods. There is however a demand for low-cost short to medium range sensors, for operation in potentially hazardous environments, which may be satisfied by optical fibre …
-
Long Basline Ranging Acoustic Positioning System
A long-baseline (LBL) underwater acoustic communication and localization system was developed for the Virginia Tech Underwater Glider (VTUG). Autonomous underwater vehicles, much like terrestrial and aerial robots require an effective positioning system, like GPS to perform a wide variety of …
-
Ranging of Aircraft Using Wide-baseline Stereopsis
… of wide-baseline stereopsis as a method of ranging aircraft, specifically as a possible sense-and-avoid solution in Unmanned Aerial Systems. Two studies were performed: the first was an experimental pilot study to examine the ability of humans to range in-flight aircraft and the second a …
-
Efficient ranging-sensor navigation methods for indoor aircraft
… This research covers a description of different ranging sensors and methods for incorporating them into the overall guidance, navigation, and control system of a flying vehicle. Various sensors are analyzed to determine their performance characteristics and suitability for indoor navigation, …
-
Ranging patterns and resource use in samango monkeys
… functions, at the group level by exploring ranging patterns, and at the individual level by exploring the role of predation risk on the spatial variation in behaviour. Focal observations were collected from two well-habituated groups of samango monkey (Cercopithecus albogularis schwarzi) at …
-
Radio frequency ranging for wireless sensor network localization
… of localizing a 'blind' device consists of ranging estimates or angle measurements to a set of references with a prior knowledge of their position relative to a co-ordinate system and the position computation of the blind device in relation to the fixed references. This research focuses on …
-
Immunogenetics of free-ranging felids on Namibian farmlands
… I focused on MHC I and II variation in free-ranging cheetahs (Acinonyx jubatus) and leopards (Panthera pardus) on Namibian farmlands. Both felid species are sympatric thus subject to similar pathogenic pressures but differ in their evolutionary and demographic histories. The main aims were to …
-
Sensor distribution for collaborative localization using radio ranging
This thesis explores the localization of a group of networked agents using range measurements between themselves in a global reference frame. While operating in an environment with sparse Global Positioning System availability and intermittent inter-agent range measurements, additional sensors may …
-
Lunar Laser Ranging for Autonomous Cislunar Spacecraft Navigation
… around $L_1$. This method uses existing lunar ranging retroreflectors (LRRR) installed on the Moon's surface in the 1960s and 1970s. A spacecraft can make laser ranging measurements to the LRRR to estimate its orbit states. A simulation platform was created to test this concept in the circular …
-
Analysis and application of an underwater optical-ranging system
In order to provide a high-resolution underwater-ranging capability for scientific measurement, a commercially available optical-ranging system is analyzed for performance and feasibility. The system employs a structured-lighting technique using a laser-light plane and single-camera imaging system. …
-
Ranging-Image-Based Methodologies to Enhance LiDAR Processing Efficiency
… data processing framework based on the ranging image, a spherical angular point cloud encoding method for conventional 10Hz mechanical LiDAR sensors. The research focuses on designing and developing a systematic suite of data processing components built upon the ranging image data …
-
Multi-Agent Relative Pose Estimation with Ultra-Wideband Ranging
… leveraging multiple ultra-wideband (UWB) ranging sensors to produce frequent inter-agent pose estimates with minimal communication overhead. This work is intended as a component of a larger multi-agent simultaneous localization and mapping (SLAM) system (also known as collaborative SLAM or …
-
The design of a deep space transponder regenerative ranging unit
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1995.
-
Ground Vehicles and Ranging Sensors: Structural Properties for Estimation and Control
… moving across an environment instrumented with ranging sensors. When the measurements collected by the vehicle along the trajectory are sufficiently informative, the global constructibility property is achieved and the vehicle is able to localise itself in the environment without relying on …
-
Precise orbit determination and analysis from satellite altimetry and laser ranging
… with the tracking data - satellite laser ranging, altimetry and crossover height differences - and how this data can be used to analyse errors in the orbit, the geoid and sea-surface topography. The outcome of this analysis is the determination of a low degree and order model for sea …
Page 1 of 369