Another Cambridge physicist... Bounces man-made radar waves off target

Slides:

Advertisements

Similar presentations

Remote Sensing andGIS.

Advertisements

Radar Remote Sensing By Falah Fakhri Post-doctoral Scholar

On Estimation of Soil Moisture & Snow Properties with SAR Jiancheng Shi Institute for Computational Earth System Science University of California, Santa.

Third Edition By : Merrill I. Skolnik

Active Remote Sensing Systems March 2, 2005 Radar Nomenclature Radar Logic Synthetic Aperture Radar Radar Relief Displacement Return Exams Next Class:

Radar Remote Sensing RADAR => RA dio D etection A nd R anging.

Radar Mapping. Electromagnetic EM Radiation Electric Field & Magnetic Field –Perpendicular to direction of propagation Explains light but is absolutely.

DPSS Radar Research Topics 2 December 2010 Leon Staphorst Principle Researcher Radar and Electronic Warfare Defence, Peace, Safety and Security.

Sonar Chapter 9. History Sound Navigation And Ranging (SONAR) developed during WW II –Sound pulses emitted reflected off metal objects with characteristic.

23057page 1 Physics of SAR Summer page 2 Synthetic-Aperture Radar SAR Radar - Transmits its own illumination a "Microwave flashlight" RAdio.

Active Microwave and LIDAR. Three models for remote sensing 1. Passive-Reflective: Sensors that rely on EM energy emitted by the sun to illuminate the.

Radar Many in a series of McGourty- Rideout Productions.

Remote Sensing: John Wilkin Active microwave systems (4) Coastal HF Radar IMCS Building Room 214C ext 251 Dunes of sand.

SAR (Synthetic Aperture RADAR) : a high resolution 2-D ground mapping technique.

Microwave Sensing.

Surface Remote Sensing Basics

Radar: Acronym for Radio Detection and Ranging

Active Remote Sensing Systems March 2, 2005

Active Remote Sensing Systems March 2, 2005 Passive vs. Active Remote Sensing Systems Types of Active Systems and Advantages History and Radar Bands Radar.

Seismic Equipment.

R ADAR By: Abdullah Khan(09ES18). W HAT IS R ADAR ? RADAR (Radio Detection And Ranging) is a way to detect and study far off targets by transmitting a.

Remote Sensing Microwave Remote Sensing. 1. Passive Microwave Sensors ► Microwave emission is related to temperature and emissivity ► Microwave radiometers.

INTERFEROMETRIC ERROR SOURCES

Imaging results from monostatic and bistatic radar observations of the Moon made at a wavelength of 68 cm (440.2 MHz) with the Millstone MISA radar transceiving.

WMO/ITU Seminar Use of Radio Spectrum for Meteorology Earth Exploration-Satellite Service (EESS)- Active Spaceborne Remote Sensing and Operations Bryan.

Dr A VENGADARAJAN, Sc ‘F’, LRDE

Optoelectronics Radiometry and Photometry, Emitters and Receivers.

Active Microwave and LIDAR. Three models for remote sensing 1. Passive-Reflective: Sensors that rely on EM energy emitted by the sun to illuminate the.

GISMO Simulation Study Objective Key instrument and geometry parameters Surface and base DEMs Ice mass reflection and refraction modeling Algorithms used.

10. Satellite Communication & Radar Sensors

GEOG Fall 2003 Overview of Microwave Remote Sensing (Chapter 9 in Jensen) from Prof. Kasischke’s lecture October 6,2003.

 RADAR which stands for RAdio Detection And Ranging was developed by Britain in the late 1930’s, during WW2  Before the war, Radars were used to detect.

Electromagnetic Radiation Most remotely sensed data is derived from Electromagnetic Radiation (EMR). This includes: Visible light Infrared light (heat)

Chapter 8 Remote Sensing & GIS Integration. Basics EM spectrum: fig p. 268 reflected emitted detection film sensor atmospheric attenuation.

1 Nonlinear Range Cell Migration (RCM) Compensation Method for Spaceborne/Airborne Forward-Looking Bistatic SAR Nonlinear Range Cell Migration (RCM) Compensation.

Synthetic Aperture Radar Specular or Bragg Scatter? OC3522Summer 2001 OC Remote Sensing of the Atmosphere and Ocean - Summer 2001.

Remote Sensing Microwave Image. 1. Penetration of Radar Signal ► ► Radar signals are able to penetrate some solid features, e.g. soil surface and vegetative.

Synthetic Aperture Radar at The Alaska SAR Facility

Wideband Radar Simulator for Evaluation of Direction-of-Arrival Processing Sean M. Holloway Center for the Remote Sensing of Ice Sheets, University of.

Precipitation Precipitation refers to any product of the condensation of atmospheric water vapour that is deposited on the Earth's surface. Precipitation.

I hope its ok to do these InSAR exercises as the lab

Dr. Mathias (Mat) Disney UCL Geography Office: 113, Pearson Building

Ionospheric HF radars Pasha Ponomarenko. Outline Conventional radars vs ionospheric radars Collective scatter processes Aspect angle effects HF propagation.

How does InSAR work? Gareth Funning University of California, Riverside.

Chongwen DUAN, Weidong HU, Xiaoyong DU ATR Key Laboratory, National University of Defense Technology IGARSS 2011, Vancouver.

Active Remote Sensing for Elevation Mapping

UNIT 2 – MODULE 7: Microwave & LIDAR Sensing. MICROWAVES & RADIO WAVES In this section, it is important to understand that radio waves and microwaves.

SCM x330 Ocean Discovery through Technology Area F GE.

Using Synthetic Aperture Radar (SAR) to Map Natural Hazards and Disasters Guest Scientist: Jeffrey Weissel Originally presented 8 May 2004.

Layover Layover occurs when the incidence angle (  ) is smaller than the foreslope (  + ) i.e.,  <  +. i.e.,  <  +. This distortion cannot be corrected!

Electromagnetic Radiation

DISPLACED PHASE CENTER ANTENNA SAR IMAGING BASED ON COMPRESSED SENSING Yueguan Lin 1,2,3, Bingchen Zhang 1,2, Wen Hong 1,2 and Yirong Wu 1,2 1 National.

Correlating Synthetic Aperture Radar (CoSAR) DIVYA CHALLA.

Passive vs. Active Sensors

Class tutorial Measuring Earthquake and volcano activity from space Shimon Wdowinski University of Miami.

Active Microwave Remote Sensing

Visit for more Learning Resources

A Basic Introduction to Radar Remote Sensing

Active Remote Sensing for Elevation Mapping

GEOGRAPHIC INFORMATION SYSTEMS & RS INTERVIEW QUESTIONS ANSWERS

Portsmouth, Shallow Survey 2008, oct , 2008, F. Jean

Sound Navigation And Ranging

Doppler Radar Basics Pulsed radar

Final exam information

For the next 4 problems, consider the following:

UNDER THE RADAR.

Radar Remote Sensing By Falah Fakhri Post-doctoral Scholar falah

Remote Sensing.

Introduction to SAR Imaging

Presentation transcript:

Physical Principles of Remote Sensing - Gareth Rees Chapter 8 - Scattering Techniques Another Cambridge physicist... Bounces man-made radar waves off target Return signal influenced by surface properties Lots of data processing needed to do useful science

Radar Basics Emit pulses of 1cm radio waves Collect return signal with same antenna Measure power in / power out Temporal and frequency shape of pulse Essentially get an albedo Which varies with...

Basic Scatterometry Scatter-what-ery? Obtain albedo for restricted range of parameters Targeted, point-like beam or… …Doppler processing of line-like beam Applications

Side-looking Airborne Radar (SLAR) Along track resolution ~ Hl/L Across track resolution ~ ct

SLAR Distortions Layover Shadowing Along track resolution from space

Synthetic Aperture Radar (SAR) More signal processing => Better resolution Record amplitude and phase to synthesize very long antenna Lengthy data processing Radar imaging applications

SAR in action - Magellan Image Venus with 150m x 150m pixels 12 cm radar, 26msec pulses every 200msec Saw through optically thick cloud layer to image previously unseen volcanic features Entire surface ~ 500 My old Characterized nature of Venusian tectonics