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1 © ACRI-ST, all rights reserved – 2012 Isotropic RFI detection Jean-Luc Vergely (ACRI-ST) Claire Henocq (ACRI-ST) Philippe Waldteufel (LATMOS)
2 © ACRI-ST, all rights reserved – 2012 Introduction Principal aims of this study : Looking for strong isotropic source -> RFI St1, A3 and A4 analysis.
3 © ACRI-ST, all rights reserved – 2012 Data set Data set to be used 2010 and 2011 reprocessed data. Philosophy: -> use L1c browse products for global analysis: source detection on ocean and land targets.
4 © ACRI-ST, all rights reserved – 2012 Data set Land/ocean L1c browse products L1c browse products over two years (2010 and 2011) : - four polarizations (in FP mode) at the same geometry - TB at antenna level - TB at 42.5° incidence - TB errors Allow global analysis on 5 FOV zones Zone 1 Zone 2 Zone 3 Zone 4 Zone 5
5 © ACRI-ST, all rights reserved – 2012 Introduction St1,A3 or A4 emission Is the signal observed on descending and ascending orbits ? Is the signal isotropic? Is the signal variable or constant ? Is the signal spatially coherent ?
6 © ACRI-ST, all rights reserved – 2012 Isotropic source Detected in the 5 zones in ascending and descending -> good azimuth coverage. Normalization to be done because of using zones affected by different OTT correction. Applying a threshold. St1 and A4 For A3 : ascending and descending zone 3
7 © ACRI-ST, all rights reserved – 2012 St1 isotropic source Isotropic source detection
8 © ACRI-ST, all rights reserved – 2012 St1 isotropic source Isotropic source detection
9 © ACRI-ST, all rights reserved – 2012 St1 isotropic source
10 © ACRI-ST, all rights reserved – 2012 A4 isotropic sources Threshold of 3 K Only RFI …
11 © ACRI-ST, all rights reserved – 2012 A4 isotropic source Isotropic source detection
12 © ACRI-ST, all rights reserved – 2012 A3 asc/desc sources Threshold of 7 K
13 © ACRI-ST, all rights reserved – 2012 A3 isotropic source Isotropic source detection
14 © ACRI-ST, all rights reserved – 2012 Principal conclusions Looking for RFI from St1, A3 and A4 SMOS measurements: isotropic sources For RFI detection : do not use A4 (correlated with A3). Only few isotropic sources have been detected. Constant isotropic source for St1 could be RFI. Distinction between sources and Gibbs effect to be done. -> further works : play with different thresholds (adaptation of the threshold according to the target (ocean or land).
1 © ACRI-ST, all rights reserved – 2012 Galactic noise model adjustment Jean-Luc Vergely (ACRI-ST) Jacqueline Boutin (LOCEAN) Xiaobin Yin (LOCEAN)
1 © ACRI-ST, all rights reserved – 2012 TEC estimation Jean-Luc Vergely (ACRI-ST) Jacqueline Boutin (LOCEAN)
1 Copyright © 2010, Elsevier Inc. All rights Reserved Fig 3.1 Chapter 3.
5.9 + = 10 a)3.6 b)4.1 c)5.3 Question 1: Good Answer!! Well Done!! = 10 Question 1:
SMOS L2 Ocean Salinity Reprocessed constant calibration L1c OTT drift study 13 April 2011 ARGANS & L2OS ESL ascendingdescending.
Galactic noise model adjustment Jean-Luc Vergely (ACRI-ST) Jacqueline Boutin (LOCEAN) Xiaobin Yin (LOCEAN)
SMOS QWG-6, ESRIN October 2011 OTT generation strategy and associated issues 1 The SMOS L2 OS Team.
SMOS L2 Ocean Salinity L1OP v620 border flag width 23 May 2014 ARGANS & L2OS ESL
UPDATE ON BIAS TRENDS, DIRECT SUN CORRECTION, AND ROUGHNESS CORRECTION Joe Tenerelli May 10, 2011.
Tests on V500 Sun On versus Sun Off 1)Tbmeas. –Tbmodel in the FOV X. Yin, J. Boutin Inputs from R. Balague, P. Spurgeon, A. Chuprin, M. Martin-Neira and.
UPDATE ON SMOS LONG-TERM BIASES OVER THE OCEAN AND ROUGH SURFACE SCATTERING OF CELESTIAL SKY NOISE Joe Tenerelli SMOS L2OS Progress Meeting Arles, France,
Universitat Politècnica de Catalunya CORRECTION OF SPATIAL ERRORS IN SMOS BRIGHTNESS TEMPERATURE IMAGES L. Wu, I. Corbella, F. Torres, N. Duffo, M. Martín-Neira.
AN INITIAL LOOK AT THE IMPACT OF THE NEW ANTENNA LOSS MODEL Joe Tenerelli SMOS QUALITY WORKING GROUP #4 7-9 March 2011.
SMOS L2 Ocean Salinity Commissioning Plan, 07/05/2009 Level 2 Ocean Salinity Processor Commissioning Plan 7 May 2009 ARGANS ACRI-ST ICM-CSIC.
Errors on SMOS retrieved SSS and their dependency to a priori wind speed X. Yin 1, J. Boutin 1, J. Vergely 2, P. Spurgeon 3, and F. Gaillard 4 1. LOCEAN.
11/2010 5/ /2011 5/ /20125/2012 N N-1 N-2 N-3 5/ /2011 5/2011 5/ /2011 5/2011.
21-23/04/2015PM27 J-L Vergely, J. Boutin, N. Kolodziejczyk, N. Martin, S. Marchand SMOS RFI/Outlier filtering.
SMOS L2 Ocean Salinity Level 2 Ocean Salinity Using TEC estimated from Stokes 3 24 October 2012 ACRI-st, LOCEAN & ARGANS SMOS+polarimetry.
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Impact of sea surface roughness on SMOS measurements A new empirical model S. Guimbard & SMOS-BEC Team SMOS Barcelona Expert Centre Pg. Marítim de la Barceloneta.
SMOS L2 Ocean Salinity – Reprocessing Level 2 Ocean Salinity Reprocessing 17 September 2008.
Combine Like Terms. Simplify the Given Expression Below:
1 Unit 1 Kinematics Chapter 1 Day
Copyright © 2011, Elsevier Inc. All rights reserved. Chapter 7 Author: Julia Richards and R. Scott Hawley.
BIAS TRENDS IN THE 1-SLOPE (REPROCESSING) AND CALIBRATED L1 BRIGHTNESS TEMPERATURES Joe Tenerelli SMOS Payload Calibration Meeting September 2012.
Author: Julia Richards and R. Scott Hawley
Combining Like Terms. Only combine terms that are exactly the same!! Whats the same mean? –If numbers have a variable, then you can combine only ones.
Teacher Name Class / Subject Date A:B: Write an answer here #1 Write your question Here C:D: Write an answer here.
Quest ion 1? A.) answer B.) answer C.) correct answerD.) answer L C.) correct answer F.
1 Copyright © 2010, Elsevier Inc. All rights Reserved Fig 2.1 Chapter 2.
Outlier detection in L2OSPP - usefulness in RFI detection- SMOS L2OS Progress Meeting – 21/22 February -BEC.
UPDATE ON THE SUN GLINT Joe Tenerelli Ocean Data Lab SMOS Level 2 OS Progress Meeting 26 SMOS Barcelona Expert Centre Barcelona, Spain April 2015.
L2OS RFI status Nicolas Lamquin, Jean-Luc Vergely Jacqueline Boutin Paul Spurgeon ICM, Barcelona, 16/17 May 2013.
1 Binary Signal Detection In MATLAB weve worked some with AWGN noise and the concept of bit error probability. Lets describe how this is measured.
SMOS L2 Ocean Salinity Level 2 Ocean Salinity L1 -> L2OS tools 12 February 2014 ARGANS & SMOS L2OS ESL.
SMOS L2 Ocean Salinity Level 2 Ocean Salinity QWG #4 7-9 March 2011 ARGANS & L2OS ESL.
UPDATE ON GALACTIC NOISE CORRECTION Joe Tenerelli SMOS Quality Working Group #9 ESA ESRIN 24 October 2012.
SMOS QWG-9, ESRIN October 2012 L2OS: Product performance summary v550 highlights 1 The SMOS L2 OS Team.
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Test B, 100 Subtraction Facts
©2011 1www.id-book.com Evaluation studies: From controlled to natural settings Chapter 14.
SMOS L1v620-L2v613 versus L1v505- L2v550 validation May 2011 Nicolas Martin, Jacqueline Boutin LOCEAN 26 May 2014.
New model used existing formulation for foam coverage and foam emissivity; tested over 3 half orbits in the Pacific foam coverage exponent modified to.
Copyright © 2011, Elsevier Inc. All rights reserved. Chapter 4 Author: Julia Richards and R. Scott Hawley.
Limits (Algebraic) Calculus Fall, What can we do with limits?
Addition Facts = = =
REVIEW OF OBSERVED BIAS TRENDS OVER THE OCEAN AND POTENTIAL IMPACT OF PROCESSOR EVOLUTION Joe & Nicolas IFREMER/CLS ESL Quality Working Group #5 May 30-31,
Barents Sea Ecosystem Resilience under global environmental change Annual Meeting – 4-7 October Herdla.
SMOS Science Workshop, Arles, th Sept, 2011 IMPROVING SMOS SALINITY RETRIEVAL: SYSTEMATIC ERROR DIAGNOSTIC J. Gourrion, R. Sabia, M. Portabella,
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