A low-noise laser-gated imaging system for long-range target identification

2004 ◽  
Author(s):  
Ian M. Baker ◽  
Stuart S. Duncan ◽  
Jeremy W. Copley
Keyword(s):  
Long Range ◽  
Imaging System ◽  
Target Identification ◽  
Low Noise ◽  
Gated Imaging

A HIGH-RESOLUTION 2D IMAGING LASER RADAR FOR OCCLUDED HARD TARGET VIEWING AND IDENTIFICATION

2008 ◽  
Vol 18 (02) ◽  
pp. 393-400 ◽  
Author(s):  
ROBERT J. GRASSO ◽  
JOHN C. WIKMAN ◽  
DAVID P. DROUIN ◽  
GEORGE F. DIPPEL ◽  
PAUL I. EGBERT
Keyword(s):  
High Resolution ◽  
Target Identification ◽  
Low Cost ◽  
System Size ◽  
Operating Conditions ◽  
Array Technology ◽  
Diode Pumped ◽  
Target Ranging ◽  
2D Imaging ◽  
Gated Imaging

BAE SYSTEMS has developed a Low Cost Targeting System (LCTS) consisting of a FLIR for target detection, laser-illuminated, gated imaging for target identification, laser rangefinder and designator, GPS positioning, and auto-tracking capability within a small compact system size. The system is based upon BAE Systems proven micro-bolometer passive LWIR camera coupled with Intevac's new EBAPS camera. A dual wavelength diode pumped laser provides eyesafe ranging and target illumination, as well as designation; a custom detector module senses the return pulse for target ranging and to set the range gates for the gated camera. Trials show that the current detectors offer complete extinction of signals outside of the gated range, thus, providing high resolution within the gated region. The images have shown high spatial resolution arising from the use of solid state focal plane array technology. Imagery has been collected in both the laboratory and the field to verify system performance during a variety of operating conditions.

Impact of speckle on laser range-gated shortwave infrared imaging system target identification performance

2002 ◽  
Author(s):  
Ronald G. Driggers ◽  
Richard H. Vollmerhausen ◽  
Nicole M. Devitt ◽  
Carl E. Halford ◽  
Kenneth J. Barnard
Keyword(s):  
Infrared Imaging ◽  
Imaging System ◽  
Target Identification ◽  
Identification Performance ◽  
Laser Range ◽  
Infrared Imaging System ◽  
Shortwave Infrared

scholarly journals Long-term, in toto live imaging of the developing mouse heart

2020 ◽  
Author(s):  
Yanzhu Yue ◽  
Xin Li ◽  
Youdong Zhang ◽  
Aibin He
Keyword(s):  
Imaging System ◽  
Light Sheet ◽  
Live Imaging ◽  
Mouse Heart ◽  
Cell Behaviors ◽  
Oriented Cell Division ◽  
Lower Vertebrates ◽  
Imaging Strategy ◽  
Cell Intercalation ◽  
Gated Imaging

Abstract Mapping holistic cell behaviors sculpting mammalian heart has been a goal, but so far only successes in transparent invertebrates and lower vertebrates. Using a live-imaging system comprising a customized vertical light-sheet microscope equipped with a culture module, a heartbeat-gated imaging strategy, and a digital image processing framework, we realized imaging of developing mouse hearts with uninterrupted cell lineages for up to 1.5 days. Four-dimensional landscapes of cell behaviors revealed a blueprint for ventricle chamber formation in which biased outward migration of outermost cardiomyocytes coupled with cell intercalation and horizontal division. The trabeculae, an inner muscle architecture, was developed through early fate segregation and transmural cell arrangement involving both oriented cell division and directional migration. Thus, live-imaging reconstruction affords a transformative means for deciphering mammalian organogenesis.

Online Optimization on Operation Parameters of Range-Gated Imaging System Based on Gaussian Process Regression

2019 ◽  
Vol 39 (4) ◽  
pp. 0412010
Author(s):  
程虎 Cheng Hu ◽  
李微 Li Wei ◽  
郭文平 Guo Wenping ◽  
杨克成 Yang Kecheng
Keyword(s):  
Gaussian Process ◽  
Imaging System ◽  
Gaussian Process Regression ◽  
Online Optimization ◽  
Operation Parameters ◽  
Gated Imaging

Study of the Mode and Maximum Detecting Performance of Underwater Laser Range-Gated Imaging System

2011 ◽  
Vol 38 (1) ◽  
pp. 0109001
Author(s):  
韩宏伟 Han Hongwei ◽  
张晓晖 Zhang Xiaohui ◽  
葛卫龙 Ge Weilong
Keyword(s):  
Imaging System ◽  
Laser Range ◽  
Underwater Laser ◽  
Gated Imaging

Multi-resolution MCS auto focus method in range-gated imaging system for underwater

2016 ◽  
Vol 45 (7) ◽  
pp. 0726003
Author(s):  
游瑞蓉 You Ruirong ◽  
王新伟 Wang Xinwei ◽  
周 燕 Zhou Yan
Keyword(s):  
Imaging System ◽  
Auto Focus ◽  
Gated Imaging

Development and Investigation of a Long-Range Time-of-Flight and Color Imaging System

2014 ◽  
Vol 44 (8) ◽  
pp. 1372-1382 ◽  
Author(s):  
Benjamin Langmann ◽  
Wolfgang Weihs ◽  
Klaus Hartmann ◽  
Otmar Loffeld
Keyword(s):  
Long Range ◽  
Imaging System ◽  
Time Of Flight ◽  
Color Imaging

scholarly journals Scattering noise estimation of range-gated imaging system in turbid condition

2010 ◽  
Vol 18 (20) ◽  
pp. 21147 ◽  
Author(s):  
ChingSeong Tan ◽  
Gerald Seet ◽  
Andrzej Sluzek ◽  
Xin Wang ◽  
Chai Tong Yuen ◽  
...  
Keyword(s):  
Imaging System ◽  
Noise Estimation ◽  
Gated Imaging ◽  
Scattering Noise

Multi-band Terahertz Imaging System Design

2005 ◽  
Vol 872 ◽  
Author(s):  
Liviu Popa-Simil
Keyword(s):  
Imaging System ◽  
Far Infrared ◽  
Electronic System ◽  
Low Noise ◽  
Molecular Structures ◽  
Resonant Structures ◽  
Field Amplification ◽  
Imaging System Design ◽  
Solid Liquid ◽  
Multi Band

AbstractDeveloping visualization devices in far infrared reveals tremendous advantages and focused the research of space agencies, defense and security as well many other private companies oriented to science. The THz wave emitters and receivers are less developed, compared to its neighboring bands (microwave and optical). During the past decade, THz waves have been used to characterize the composition and properties of solid, liquid and gas phase materials to identify their molecular structures. At the base of this development stays the possibility of achieving microstructures from conductive or super-conductive materials able to select by resonant criteria the emerging photons and drive into specialized detection devices. The problem to be solved is the ratio S/N because the energy of a single 1THz photon is 4.1 meV equivalent to a 47K temperature.A group of such highly selective micro-antenna can be grouped into a unit cell - called elementary multi-band detector. The development of resonant structures for frequency selectivity and directivity reasons coupled with the electrical field amplification and detection in low noise quantum transistors. Such an electronic system might be integrated in a modular structure and by multiplicity to create spatial sensors and phased arrays.

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