When NASA and the Indian Space Research Organization's (ISRO) new Earth satellite NISAR (NASA-ISRO Synthetic Aperture Radar) ...

NASA's Jet Propulsion Laboratory used radar data taken by ESA's Sentinel-1A satellite before and after the 2015 eruption of ...

Historically, post-downburst research and damage surveys have been limited to damage assessments, review of nearby wind measurements and ...

Abstract: Airborne synthetic aperture radar (SAR) systems are commonly susceptible to trajectory deviations, resulting in distinct azimuth phase errors in the ...

AIMS To identify the patent ductus arteriosus (PDA) shunt flow pattern using Doppler echocardiography; and to assess whether it could be used to predict the development of clinically significant PDA.

This is even more common with Doppler radars due to their higher sensitivity. As you move further away from the radar, the returned echo becomes weaker. This occurs because as the radar beam broadens ...

Abstract: Time delay and Doppler shift between the echo signal and the reference signal are two most commonly used measurements in target localization for the passive radar. Doppler rate, which can be ...

A new transthoracic echocardiographic tool to determine TACT by tissue Doppler imaging (PA-TDI (the time from ... All patients underwent an echocardiogram and the PA-TDI interval was measured. Patient ...

13 Overt coronary arterial disease was excluded based on clinical examination and a systematic ECG. All patients underwent Doppler echocardiography (Philips Sonos 5500; Philips Medical Systems, ...

For nine days during 2024, uncrewed surface vehicle (USV) manufacturer SeaTrac and underwater technology company Sonardyne ...