Cancelation of ambient

Slides:

Advertisements

Similar presentations

Antony Lewis Institute of Astronomy, Cambridge

Advertisements

Ground-based FTIR Update CAVIAR Meeting NPL, 29 th September 2010 Tom Gardiner, Marc Coleman.

On the Implications of the Log-normal Path Loss Model: An Efficient Method to Deploy and Move Sensor Motes Yin Chen, Andreas Terzis November 2, 2011.

EVOLUTION® Hands-On Demo This guide is meant to help lead a hands-on demo or presentation. The items listed are a suggestion for things to review, please.

Potentiostat Basics I’m Max Yaffe

1 Analysis of Airborne Microwave Polarimetric Radiometer Measurements in the Presence of Dynamic Platform Attitude Errors Jean Yves Kabore Central Florida.

Wireless LAN Technology

Ray Tracing A radio signal will typically encounter multiple objects and will be reflected, diffracted, or scattered These are called multipath signal.

National Institute of Science & Technology Technical Seminar Presentation-2004 Presented By: Danish Kumar Hotta [EC ] Compact Microstrip Antenna.

Powerline Communications: Channel Characterization and Modem Design Yangpo Gao Helsinki University of Technology

Advances in EMC Measurements on Railways. Origins of EMI in Railways.

Setup “Do’s & Don’ts Presented By:

Types of experimental error

May 2005 Radio Research Laboratory Ministry of Information and Communication Designation of Testing laboratories.

Field Strength Measurements Relative to ARRL Concerns Regarding BPL October 16, 2003 Steve Martin Technical Research Branch Federal Communications Commission.

Wind Power APES What makes a good wind power site? Powering a Nation – Roping the Wind.

1 Cessna EME Lab Reverb Chamber Emissions Matthew Wills EME Lab Supervisor December 7th, 2004.

EPOCH 1000 Series Procedure Custom PA Probe-Wedge Definition.

Unpack From Box and Inventory Technical Bulletin User’s Manual Assembly Procedure Direct or Strap Pole Mounting Kit Face to Southern Sky High Temperature.

Phase noise measurements in TRIUMF ISAC 2 cryomodule K. Fong, M. Laverty TRIUMF.

Trimble SPS730 and SPS930 Universal Total Stations

QUÍMICA ORGÂNICA III – UFPI/2009:2 Infravermelho: Revisão Prof. Dr. Sidney Lima.

Stallings, Wireless Communications & Networks, Second Edition, © 2005 Pearson Education, Inc. All rights reserved Wireless LAN Technology.

Why We Care or Why We Go to Sea.

Performance Testing What can you achieve with your MB System?

SRANT Lab., Korea Maritime University A Study on Improved Algorithm for MIMO Antenna Measurement Thanh-Ngon Tran Supervisor: Professor Kyeong-Sik Min SRANT.

BICON / HYBRID COMPARISON Performed by members of the TCB Council ANSI C63 SC 1 April 18, 2012.

Testing loudspeakers in a production environment - the P630 test system K & K International Ib Rasmussen.

11 14th CAA Cross-Calibration meeting, York, 5-7 Oct 2011 STAFF CAA products & Cross-Calibration activities Patrick ROBERT & STAFF Team 5) STAFF-SC CWF.

Radiometric Correction and Image Enhancement Modifying digital numbers.

Teledyne Analytical Instruments LGA 4000 Analyzer.

Martin Hewitson Overview of DC work. GEO DC workshop June DC work Noise characterisation Noise projections, noise sources, noise couplings Calibration.

ASTEROSEISMOLOGY and SEARCH for EXOPLANETS Vienna - September 18 th 2001 Optical performance characterization Point Spread Function (PSF) : Telescope +

Measurements using a GTEM cell above 1GHz Dr Tian Hong LOH.

1 Manipulating Audio. 2 Why Digital Audio  Analogue electronics are always prone to noise time amplitude.

Sediment Properties and the Acoustic Field in a Three-layer Waveguide David Barclay AOS seminar June 1st, 2006.

E.Guschin (INR,Moscow) 3 May 2006Calorimeter commissioning meeting Status of PRS/SPD detector Cosmic test results Installation/tuning of monitoring system.

Atmospheric phase correction at the Plateau de Bure interferometer IRAM interferometry school 2006 Aris Karastergiou.

Antenna II LN09_Antenna Measurements 1 /10 Antenna Measurements.

Data Editing Strategies Common edits Invalidation vs. contamination? What is a considered a spike? What not to edit! Automatic edits Reasons for edits.

TRIPLEGEM and VFATs at The Test Beam Area TRIPLEGEM and VFATs at The Test Beam Area N. Turini……reporter Eraldo Oliveri! Eraldo Oliveri main worker! N.

FFT Hit Finding Progress Brian Page September 29, 2009.

Piero Belforte, CSELT 1999: AEI_EMC_, EMC basics by Flavio Maggioni.

Radio Noise Measurement and Related Standards

Teng Wei and Xinyu Zhang

NSG 4070 Signal generator and immunity test system Dr. Heinrich

Automated OTMS Raghav Malik.

Hala Esawi Hana Masri Shorouq Abu Assab Supervised by: Dr.Yousef Dama

Metered Madness Innovations 2017.

Pre-launch Characteristics and Calibration

3.4.3 Notch and comb filters To remove periodic artifacts

ANTENNA MEASUREMENTS Measurement of Radiation Pattern Gain

Noise Figure Measurement using Natural Noise Sources

Installation-Troubleshooting-Maintenance

Making Physical Measurements

Design of Digital Filter Bank and General Purpose Digital Shaper

Applications of Technology

March Trip Plan Mikey Davis 01 March /7.

Precise Surround Setup w/ Microphone

Making Physical Measurements

Chem. 133 – 2/16 Lecture.

TB8100 Technical Training July 2005

Powerline Communications: Channel Characterization and Modem Design

Readout units and the calibration of loadcells.

KMVSS on the Reverse safety devices

Open Rack Specification 2.1 Update

Sensor Controller for Obstacle Detection System

Introduction: How to use Audacity to generate and analyze a signal.

Senior Project – Computer Engineering Active Noise Cancellation For the Attenuation of Sound Stephen E. Lee Advisor – Prof. Catravas Results One.

Presentation transcript:

Cancelation of ambient Does it work? What are the limitations? Signal type Broadband noise Narrowband signals Strength of ambient vs EUT Fluctuating ambient

Cancelation experiment The setup “EUT” “Ambient”

The reality Laboratory environment, awful site. Lots of metal shelving, filing cabinets and equipment in immediate vicinity. Single sweeps only, no attempt to edit background or average results. EUT and Ambient generators are comb generators with 20ppm frequency separation.

Make this one EUT Call this one ambient

Site Calibration Required for ‘simple’ indoor and outdoor open sites. Helps identify good vs bad locations Checks correct operation of instrumentation on any site. Removes need for height scanning and ground plane. Validity of calibration depends on many factors......

Site calibration Size of radiating source compared with calibration source. Accurate location of calibration source. Site confinement. Effect of large EUT on site characteristics.