Results 141 to 150 of about 5,633 (244)

The Importance of Individual Body Condition in Mammalian Behavioural Responses to Disturbance

Mammal Review, Volume 56, Issue 2, June 2026.
Body condition, shaped by the balance between energy demands and reserves, predictably shapes mammalian disturbance responses. Poor‐condition individuals adopt needs‐based strategies, accepting greater risks to meet immediate energetic needs, while good‐condition individuals follow asset‐protection strategies, minimizing risks to protect their survival
Valeria Perez‐Marrufo, Lesley Thorne, Susan E. Parks   +2 more
wiley   +1 more source

A Frequency-Domain Adaptive Matched Filter for Active Sonar Detection. [PDF]

Sensors (Basel), 2017
Zhao Z, Zhao A, Hui J, Hou B, Sotudeh R, Niu F.   +5 more
europepmc   +1 more source

An Improved Velocity Estimation Method for Wideband Multi-Highlight Target Echoes in Active Sonar Systems. [PDF]

Sensors (Basel), 2018
Huang S, Fang S, Han N.
europepmc   +1 more source

Target localization in active sonar

, 2017
La connaissance de l'environnement marin est nécessaire pour un grand nombre d'applications dans le domaine de l'acoustique sous-marine comme la communication, la localisation et détection sonar et la surveillance des mammifères marins.
Mours, Alexis
core  

An Improved Azimuth Angle Estimation Method with a Single Acoustic Vector Sensor Based on an Active Sonar Detection System. [PDF]

Sensors (Basel), 2017
Zhao A, Ma L, Ma X, Hui J.
europepmc   +1 more source

Assessment of goose-beaked whale responses to mid-frequency active sonar using a hierarchical hidden Markov model. [PDF]

Mov Ecol
DeRuiter SL, Falcone EA, Coates SN, Rone BK, Sweeney DA, Dolan KA, Jarvis SM, Andrews RD, Watwood SL, Schorr GS.   +9 more
europepmc   +1 more source

Active sonar detection of icebergs

, 1987
On présente des résultats d'une campagne de mesures en sonar actif des propriétés (indice, durée) des échos d'icebergs observés dans l'Arctique canadien durant l'été 1986 en mer ouverte et dans la banquise.
SUTCLIFFE, Peter, DE HEERING, Philippe
core  

Exposure and response of satellite-tagged Blainville's beaked whales to mid-frequency active sonar off Kaua'i, Hawai'i. [PDF]

Mov Ecol
Henderson EE, Kratofil MA, Baird RW, Martin CR, Harnish AE, Alongi GC, Martin SW, Southall BL.   +7 more
europepmc   +1 more source

Surface Ship Wake Detection using Active SONAR

, 2018
Detection of enemy ship in the oceanographic regions of any country is crucial for its defence. Existing techniques to detect the enemy ship have certain drawbacks like low signal to clutter ratio or developed counter techniques.
Kishore, Gurram, Jana, Soumya
core  

Whales and Sonar: Environmental Exemptions for the Navy\u27s Mid-Frequency Active Sonar Training

, 2009
Mid-frequency active (MFA) sonar emits pulses of sound from an underwater transmitter to help determine the size, distance, and speed of objects. The sound waves bounce off objects and reflect back to underwater acoustic receivers as an echo.
Alexander, Kristina
core