doc.: IEEE 802.15-15-11-0765-00-0thz Project: IEEE P802.15 Working Group for Wireless PersonalArea Networks (WPANs) Project: IEEE P802.15 Working Group for Wireless PersonalArea Networks (WPANs) November 2011 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Applications and Requirements for Environmental Remote Sensing Date Submitted: 9 November, 2011 Source: Albin J. Gasiewski University of Colorado at Boulder 0425 UCB, Boulder, CO 80309-0425, USA Voice:303-492-9688, FAX: 303-492-2758, E-Mail:[email protected]Voice:303 492 9688, FAX: 303 492 2758, E Mail:[email protected]Re: Invited on behalf of GRSS Frequency Allocations in Remote Sensing (FARS) Technical Group Abstract: Several emerging applications of THz frequencies to active and passive remote sensing of the i t i d Th i f h ifi f b d t h l i d environment are reviewed. The review focuses on he specific frequency bands, technology issues, and potential interference modalities that may be encountered in THz remote sensing., along with a discussion of interference and sharing issues. Purpose: Briefing to the 802.15 THz IG on THz remote sensing technologies for environmental applications. Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for di i di t bi di th t ib ti i di id l( ) i ti ( ) Th t ili thi discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE Submission Slide 1 and may be made publicly available by P802.15. A.J. Gasiewski, University of Colorado at Boulder
Transcript
doc.: IEEE 802.15-15-11-0765-00-0thz
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)November 2011
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: Applications and Requirements for Environmental Remote SensingDate Submitted: 9 November, 2011Source: Albin J. GasiewskiUniversity of Colorado at Boulder0425 UCB, Boulder, CO 80309-0425, USAVoice:303-492-9688, FAX: 303-492-2758, E-Mail:[email protected]:303 492 9688, FAX: 303 492 2758, E Mail:[email protected]: Invited on behalf of GRSS Frequency Allocations in Remote Sensing (FARS) Technical Group
Abstract: Several emerging applications of THz frequencies to active and passive remote sensing of the i t i d Th i f h ifi f b d t h l i denvironment are reviewed. The review focuses on he specific frequency bands, technology issues, and
potential interference modalities that may be encountered in THz remote sensing., along with a discussion of interference and sharing issues.
Purpose: Briefing to the 802.15 THz IG on THz remote sensing technologies for environmental applications.Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for di i d i t bi di th t ib ti i di id l( ) i ti ( ) Th t i l i thidiscussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE
Submission Slide 1
g p p p yand may be made publicly available by P802.15.
A.J. Gasiewski, University of Colorado at Boulder
doc.: IEEE 802.15-15-11-0765-00-0thzNovember 2011
Applications and Requirements for THz Environmental Remote SensingTHz Environmental Remote Sensing
Prof Albin J GASIEWSKIProf. Albin J. GASIEWSKIUniversity of Colorado at Boulder
andandIEEE-GRSS Frequency Allocations in Remote Sensing
Submission Slide 28 A.J. Gasiewski, University of Colorado at Boulder
doc.: IEEE 802.15-15-11-0765-00-0thzNovember 2011
Submission A.J. Gasiewski, University of Colorado at BoulderSlide 29
doc.: IEEE 802.15-15-11-0765-00-0thz
Density of InterferersNovember 2011
AMSR-E C-band Example: PT= 1 mW (0 dBm)
Density of InterferersFrom Friis formula and kTB thermal noise: PT 1 mW (0 dBm)
T = 0.3 K (SA.1029-2 recommendation)B = 350 MHz = 4 3 cm (6 9 GHz)
and kTB thermal noise:
< = 4.3 cm (6.9 GHz)C = 1 (direct isotropic radiation)τ = 0.02 (<0.1 dB atmospheric loss) θ 55 i id WRT di
<
θs = 55o incidence WRT nadir
< 2.3E-3 (km-2)Or, an average transmitter separation distance of more than ~21 km isrequired for non-interference (using
θs
q ( gthe ITU 20% criteria).
6.9 GHz was orignally intended as the primaryAMSR E h l f il i t t
Submission
AMSR-E channel for soil moisture measurement
A.J. Gasiewski, University of Colorado at BoulderSlide 30NRC Report on “Spectrum Management for Science in the 21st Century” http://www.nap.edu/catalog/12800.html
doc.: IEEE 802.15-15-11-0765-00-0thzIdentification of Interfering Sources
SubmissionFebruary 13, 2008
ASEN Remote Sensing Seminar
doc.: IEEE 802.15-15-11-0765-00-0thzIdentification of Interfering Sources
SubmissionFebruary 13, 2008
ASEN Remote Sensing Seminar
doc.: IEEE 802.15-15-11-0765-00-0thzIdentification of Interfering Sources
SubmissionFebruary 13, 2008
ASEN Remote Sensing Seminar
doc.: IEEE 802.15-15-11-0765-00-0thzIdentification of Interfering Sources
SubmissionFebruary 13, 2008
ASEN Remote Sensing Seminar
doc.: IEEE 802.15-15-11-0765-00-0thzPSR/C SGP99 7/14/99 – Oklahoma – SN 0049
Calibrated (uncorrected) Imagery
Interference above geophysical and instrument noise from ground-based active services
Submission Slide 36 A.J. Gasiewski, University of Colorado at Boulder
doc.: IEEE 802.15-15-11-0765-00-0thzPSR/C SGP99 7/14/99 – Oklahoma – SN 0049
Interference-Corrected Imagery
Interference mostly removed for purposes of soil moisture measurement
SubmissionFebruary 13, 2008
ASEN Remote Sensing Seminar
doc.: IEEE 802.15-15-11-0765-00-0thzNovember 2011
RFI t P i S t t TH B dRFI to Passive Systems at THz Bands• There is little concern about RFI above 275 GHz at
present since all activity is nascent• As sources become cheaper and receivers are ablet b i t t d b th i d ti li tito be integrated both passive and active applicationswill expandRFI mitigation efforts and actions at lowerRFI mitigation efforts and actions at lower
frequency bands will be representative• Water vapor screening (producing exponentialWater vapor screening (producing exponentialdecay) can be likely be used to facilitate bandsharing:s g: Requires knowledge of humidity fieldsMay require on-board ROM radiative transfer
Submission A.J. Gasiewski, University of Colorado at BoulderSlide 38
y qcalculations (WRF+MPM on a PDA)
doc.: IEEE 802.15-15-11-0765-00-0thzNovember 2011
• Active applicationspp– Standoff detection– All weather landing imagerAll weather landing imager– Short range security imaging– Double resonance transmission spectroscopyDouble resonance transmission spectroscopy– MMW cloud radar (90, 140, 210 GHz)
Submission Slide 39 A.J. Gasiewski, University of Colorado at Boulder
doc.: IEEE 802.15-15-11-0765-00-0thzNovember 2011
187 GH R d I i f S it I i187 GHz Radar Imaging for Security Imaging
“Design and testing of an activeDesign and testing of an active 190-GHz millimeter-wave imager”
Submission A.J. Gasiewski, University of Colorado at BoulderSlide 40Timms et al., J. Electronic Imaging, 2010
doc.: IEEE 802.15-15-11-0765-00-0thzNovember 2011
675 GHz Radar Imaging for Standoff Detection675 GHz Radar Imaging for Standoff Detection
Siegel group/JPL:
Submission A.J. Gasiewski, University of Colorado at BoulderSlide 41
Cooper et al., Trans. MTT, 2008
doc.: IEEE 802.15-15-11-0765-00-0thzNovember 2011
Airborne Imaging Applications
• Passive MMW Imaging for landing during fog Technology for MMIC receiver arrays Technology for MMIC receiver arrays
demonstrated in late 1990’s at 94 GHzMMIC LNA receiver chips being developedMMIC LNA receiver chips being developed
up to ~700 GHz• Radar for landing during brownout being demonstratedRadar for landing during brownout being demonstrated
at frequencies up to 340 GHz
Submission A.J. Gasiewski, University of Colorado at BoulderSlide 42
doc.: IEEE 802.15-15-11-0765-00-0thzNovember 2011
Double Resonance Spectroscopy• Proposed active IR/THz technique for remote detection• Proposed active IR/THz technique for remote detectionof trace species.
Submission A.J. Gasiewski, University of Colorado at BoulderSlide 43DeLucia at al., IEEE J. Quantum Electronics, 2009
doc.: IEEE 802.15-15-11-0765-00-0thzNovember 2011
Summary• There is a rapidly growing number of
applications of THz technology for pp gyenvironmental (and related) applications– Both passive and activeBoth passive and active– Highly dependent on power/cost and propagation
requirementsq• Current spectral needs are modest, but could
be expected to become significantbe expected to become significant – Water vapor screening could potentially be
