Hyperspectral imaging sensor for the coastal environment

Fisher, John; Antoniades, J. A.; Rollins, Chris; Xiang, Lian-Qin

doi:10.1117/12.322003

Cited by 10 publications

(5 citation statements)

References 9 publications

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“…A grating imaging spectrograph was chosen for its advantages over other hyperspectral technologies such as those incorporating prism, wedge filter, and interferometric techniques [14,15,16]. The main limitations that traditional grating-based systems have encountered are optical distortions when using apertures f/4 and faster, stray light from multiple diffraction orders, and sensitivity to polarization of the incoming light.…”

Section: Ocean Phills System Designmentioning

confidence: 99%

Ocean PHILLS hyperspectral imager: design, characterization, and calibration

Davis¹,

Bowles²,

Leathers³

et al. 2002

Opt. Express

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175

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Abstract:The Ocean Portable Hyperspectral Imager for Low-Light Spectroscopy (Ocean PHILLS) is a hyperspectral imager specifically designed for imaging the coastal ocean. It uses a thinned, backsideilluminated CCD for high sensitivity and an all-reflective spectrograph with a convex grating in an Offner configuration to produce a nearly distortionfree image. The sensor, which was constructed entirely from commercially available components, has been successfully deployed during several oceanographic experiments in 1999-2001. Here we describe the instrument design and present the results of laboratory characterization and calibration. We also present examples of remote-sensing reflectance data obtained from the LEO-15 site in New Jersey that agrees well with ground-truth measurements. 138-170 (1996). 17. A. Offner, "Annular field systems and the future of optical microlithography," Opt. Eng. 26, 294-299 (1987). 18. P. Mouroulis, R. O. Green, and T. G. Chrien, "Design of pushbroom imaging spectrometers for optimum recovery of spectroscopic and spatial information," Appl. ©2002 Optical Society of America

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Section: Ocean Phills System Designmentioning

confidence: 99%

Ocean PHILLS hyperspectral imager: design, characterization, and calibration

Davis¹,

Bowles²,

Leathers³

et al. 2002

Opt. Express

Self Cite

175

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show abstract

“…This is sampled with an 8-bit monochrome industrial vision CCD camera. Scanning the object in a direction normal to the slit while taking multiple images, creates a data "hyper-cube" in the mode of classic "push-broom" type remote sensing instruments (Fisher 1998;Rickard 1937). The spectrograph resolves 580 columns of 50-micron spatial elements along the input aperture.…”

Section: Remote Sensing Instrumentsmentioning

confidence: 99%

MARTE: Technology development and lessons learned from a Mars drilling mission simulation

Cannon

Stoker

Dunagan

et al. 2007

Journal of Field Robotics

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The NASA Mars Astrobiology Research and Technology Experiment (MARTE) performed a field test simulating a robotic drilling mission on Mars in September 2005. The experiment took place in Minas de Riotinto in southwestern Spain, a highly relevant Mars analog site. The experiment utilized a 10 m class dry auger coring drill, a robotic core sample handling system, onboard science and life detection instruments, and a borehole inspection probe, all of which were mounted to a simulated lander platform. Much of the operation of the system was automated, and the resulting data were transmitted via satellite to remote science teams for analysis. The science team used the data to characterize the subsurface geology and to search for signs of life. Based on the data being received and operational constraints, the science team also directed the daily operation of the equipment. The experiment was highly successful, with the drill reaching over 6 m in depth in 23 days of simulated mission. The science team analyzed remote sensing data obtained from 28 cores and detected biosignatures in 12 core subsamples. This experiment represents an important first step in understanding the technology and operational requirements for a future Mars drilling mission. In the past there have been numerous rover field tests that have helped guide the design and implementation of the highly successful rover missions to Mars. However, a drilling mission potentially adds a new level of complexity, and it is important to understand the associated challenges. This paper documents the design of the experimental system, highlighting some of the more important design criteria and design trades. It also discusses the results of the field testing and lists some of the key technological lessons learned. © 2007 Wiley Periodicals, Inc.

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“…Chrisp 3 showed that an imaging spectrometer can be made from the reimager by placing a grating on the convex secondary mirror, and Reininger 4 described a number of configurations of the Offner imaging spectrometer combined with imaging foreoptics. Others [5][6][7][8][9] have investigated the Offner spectrometer and shown that it has very low spectral smile and spatial keystone while operating at f numbers of 2 or less and with slits as long as 20% of the curvature radius of the primary mirror. This leads to a very compact instrument, and the Offner spectrometer has found extensive use in hyperspectral remote sensing applications.…”

Section: Introductionmentioning

confidence: 98%

Out-of-plane dispersion in an Offner spectrometer

Lucke

2007

Opt. Eng

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In an Offner spectrometer, unlike other spectrometers, the dispersion need not be in the plane of the instrument ͑defined as the plane that includes the mirror vertices and the center of the entrance slit͒. If the entrance slit is short, better performance can be obtained when the dispersion is perpendicular to this plane. The reasons for this are briefly discussed, and design examples given. © 2007 Society of Photo-Optical Instrumentation Engineers.

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Hyperspectral imaging sensor for the coastal environment

Cited by 10 publications

References 9 publications

Ocean PHILLS hyperspectral imager: design, characterization, and calibration

Ocean PHILLS hyperspectral imager: design, characterization, and calibration

MARTE: Technology development and lessons learned from a Mars drilling mission simulation

Out-of-plane dispersion in an Offner spectrometer

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