Essays about: "sonar and beamforming"

Found 4 essays containing the words sonar and beamforming.

1. 1. DRONAR: Obstacle echolocation using ego-noise

   University essay from Linköpings universitet/Institutionen för systemteknik

   Author : Henrik Nilsson; [2023]
   Keywords : Drone; Autonomous systems; Obstacle avoidance; Sound; Noise; Planning; SONAR; Ego-noise; Multi-rotor aerial vehicle; Unmanned areal vehicle; Drönare; Autonoma system; Hinderundvikning; Ljud; Oljud; Planering; SONAR; Egenljud; Multirotorfordon; Obemannat luftfordon;

   Abstract : You do not want your drone to crash. Therefore, safety systems should be put in place to prevent such an event, and obstacle avoidance is a major part of this. Today, the most successful techniques use cameras or light detection and ranging (LIDAR) to find and avoid obstacles; but to improve resiliency, multiple systems should be used. READ MORE

3. 2. Development of a real-time navigation and collisionavoidance system for an autonomous naval rover : A Contribution to the Environmental Initiative for Flexible andReal-time Water Monitoring of the CatFish team

   University essay from Högskolan i Halmstad/Akademin för informationsteknologi

   Author : Esmee Tackx; [2023]
   Keywords : ;

   Abstract : This thesis explores the design and optimisation of a sensor system for real-time position determination of the Fish component in the CatFish naval drone and the development of a sonar sensor system for accurate object localisation and safe navigation in dynamic and uncertain underwater conditions. Through comprehensive experimentation and analysis, this thesis demonstrates the effectiveness of the proposed sensor system and sonar sensing system in enhancing underwater navigation and obstacle avoidance capabilities. READ MORE

4. 3. A Study Of Using Communication Signals As Sonar Pulses In Underwater Sensor Systems

   University essay from Uppsala universitet/Signaler och system

   Author : Erica Svensson; [2022]
   Keywords : Sonar; Communication signal; Beamforming; Underwater sensor system; WLS estimator; Detection algorithm; Position estimation;

   Abstract : Underwater communication within underwater sensor network is crucial for surveillance of coast and ocean areas. The aim of this report was to examine whether it is realistic to use the communication signal which is sent from one node to another as a sonar pulse, and in such case at what distances. READ MORE

5. 4. Matched Field Beamforming applied to Sonar Data

   University essay from Institutionen för systemteknik

   Author : Tomas Lundström; [2008]
   Keywords : Conventional Beamforming; Nearfield; Bearing Estimation; Distance Estimation; Sonar; MUSIC; Linear array; Spatial Covariance Matrix; Matched Field;

   Abstract : Two methods for evaluating and improving plane wave beamforming have beendeveloped. The methods estimate the shape of the wavefront and use theinformation in the beamforming. READ MORE