Results 71 to 80 of about 4,350,721 (212)

Sonar and radar SAR processing for parking lot detection [PDF]

open access: yes, 2011
In this paper, SAR processing algorithms for automotive applications are presented and illustrated on data from non-trivial test scenes. The chosen application is parking lot detection.
Mure-Dubois, James   +2 more
core  

Continuous Transmission Frequency Modulation Detection under Variable Sonar-Target Speed Conditions

open access: yesSensors, 2013
As a ranging sensor, a continuous transmission frequency modulation (CTFM) sonar with its ability for range finding and range profile formation works effectively under stationary conditions.
Jun Yang, Yang Wang
doaj   +1 more source

Robotics for Crop Pollination: Recent Advances and Future Direction

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT There is great interest in alternative pollination strategies for crop production in the face of climate change and perennial threats to the traditional pollination mechanisms. This review explores the potential of robotic pollination as a promising solution to these challenges affecting crop fertilization, agricultural sustainability, and ...
Ranjan Sapkota   +3 more
wiley   +1 more source

Digital Signal Processing Approach in Air Coupled Ultrasound Time Domain Beamforming

open access: yesArchives of Acoustics, 2014
The work presents the results of experimental study on the possibilities of determining the source of an ultrasonic signal in two-dimensional space (distance, horizontal angle).
Krzysztof HERMAN   +2 more
doaj   +1 more source

Validation of a Particle Image Velocimetry Algorithm Through Comparative Field and Laboratory Analysis

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Flow velocity measurement is fundamental to hydrological and hydraulic studies, providing essential data for streamflow estimation and river dynamics analysis. Traditional in situ methods like propeller gauges and acoustic Doppler current profilers are accurate but intrusive and labour‐intensive, while non‐intrusive image processing methods ...
Ghazaleh Nassaji Matin   +4 more
wiley   +1 more source

Some Methods of Describing Echolocation Calls of Bats Using Cohen’S Class and Wavelet Algorithms

open access: yesArchives of Acoustics, 2008
In this paper some digital signal processing algorithms, that are used for describing bats’ echolocation calls of two different species of bats (Myotis daubentoni, Nyctulus noctula) are presented.
Krzysztof HERMAN
doaj  

Deep learning‐based super‐resolution reconstruction and improved YOLOv9 for efficient benthos detection: a case study at Lake Hamana, Japan

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
This study presents a UAV‐based framework that integrates deep learning‐based super‐resolution reconstruction and an enhanced YOLO detector to improve centimetre‐scale benthic organism monitoring. Using hermit crabs in Lake Hamana, a coastal lagoon in Japan, as a case study, the method substantially enhanced small‐object detection performance ...
Fan Zhao   +10 more
wiley   +1 more source

Particle resolution and non-linear signal : processing with RADAR/SONAR applications [PDF]

open access: yes, 1995
This paper introduces a general method for a particle solution to optimal nonlinear estimation in signal processing . We deal here with the class of discrete time Markov processes, to which the estimation problems of RADAR/SONAR signal processing ...
DEL MORAL (P.)   +3 more
core  

Measurement of the moving objects’ bearing by coherent integration of the spectral components of signals in the passive sonar

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The method of measuring bearing (azimuth) of a moving surface (underwater) object in the passive sonar is described. This method is considered to be a modification of signals phase comparing method.
S. R. Heister, D. N. Nguyen
doaj  

Gaussian mixture multitarget–multisensor Bernoulli tracker for multistatic sonobuoy fields

open access: yesIET Radar, Sonar & Navigation, 2017
Sonobuoy fields, consisting of a large network of emitter and receiver sonar sensors on buoys, are increasingly being used for detection and tracking of underwater targets in a defined maritime area.
Branko Ristic   +6 more
doaj   +1 more source

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