WGISS 37CCMEO Data Provider Status

Patrick KingApril 15, 2014

Introduction

Earth Observation Data Management System (EODMS) Project – Status

Radarsat-2 Beam Modes

Radarsat-2 Metadata Discovery through OpenSearch

Ordering Radarsat-2 Imagery

Earth Observation Data Management System(EODMS) Project Status

7 Milestones in EODMS contract with Compusult (April 2013-Sept. 2014) 5 Milestones have been completed

Deliverables have included the Project Management Plan, Requirements Analysis, Final Design, Implementation Plan(database migration etc.) , Draft ATP, Prototype delivery

CEOCat database is still being populated until the EODMS system is put into production mode

CEOCat database is currently the source of metadata for Radarsat-1 and Radarsat-2 OpenSearch and CSW

EODMS will participate in the Federal Government OpenData Initiative -> http://data.gc.ca

EODMS will be an integral component of the Federal Geospatial Platform (FGP)

Radarsat-2 Beam Modes Radarsat-2 is an “active” instrument meaning that it

transmits energy in the 5.5 cm. wavelength range to the earth’s surface and measures the return of this energy to create imagery

Images are not affected by weather as opposed to optical images (eg. Landsat) whereby cloud cover has a significant impact on image quality.

Images are captured during day or night. Radarsat-2 products are distinguished by beam

mode Elevation angle and elevation profile of the radar

beam are changed to create an incident angle range. High-resolution (3 m.) and multi-polarization improve

the recognition features on the earth`s surface

Radarsat-2 Beam Modes (con’t) -> Example Of Incidence Angles And Resolution

Source – MacDonald, Dettwiler and Associates Ltd. http://gs.mdacorporation.com/includes/documents/RN-SP-52-1238%20RS2%20Product%20Description%201-8_15APR2011.pdf

Radarsat-2 Beam Modes (con’t) - Ultrafine Beam Mode (3m res.) Imagery Examples

CCMEO OpenSearch Implementation

OpenSearch search parameters : SearchTerms (“Radarsat-1” or “Radarsat-2” – data set choice) time:start? (temporal range limited to 10 days) time:end? geo:box? (latitude or longitude extent limited to 50 degrees) startPage (cannot be used with StartIndex or count) startIndex (cannot be used with StartPage) count (cannot be used with StartPage)

Key response elements : Atom :

For Browse Image : <link rel=“icon"/> For Product order : <link rel="enclosure”> For Scene Metadata : <content type="text">

GeoRSS : For Browse Footprint : <georss:polygon>43.8572704 -

77.15721</georss:box>

CCMEO OpenSearch Implementation (con’t) :Temporal Search Example

HTTP Request : http://ceocatprod1t.ccrs.nrcan.gc.ca/cgi-bin/opensearch_r1.sh?q=Radarsat-2&dtstart=2013-01-11T00:00:00Z&dtend=2013-01-17T00:00:00Z&startIndex=1&count=50&format=atom

HTTP Response :<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom" xmlns:opensearch="http://a9.com/-/spec/opensearch/1.1/" xmlns:georss="http://www.georss.org/georss" xmlns:geo="http://a9.com/-/opensearch/extensions/geo/1.0/" xmlns:time="http://a9.com/-/opensearch/extensions/time/1.0/"><title>CCMEO Radarsat-2 Satellite Scenes</title>...<entry> <title>Radarsat-2 raw scene</title> <link href="http://ceocat.ccrs.nrcan.gc.ca/cdql/radarsat2/GATN_RS2_239161_1_11523_1.jpg" rel="icon"/> <link href="http://cwic.wgiss.ceos.org/CWICEmailHandler/handler?acq_date=2013-01-16T23%3A48%3A07%2E024&amp;image_identifier=239161&amp;beam_identifier=Multi-LookFine&amp;transmit_polarization=H&amp;receive_polarization=H&amp;satellite=Radarsat-2" rel="enclosure" type="application/cgi"/> <id>imageid_239161_sceneid_1_recfac_GATN_acqdate_2013-01-16T23_48_07</id> <updated>2013-01-17T07:02:50-04:00</updated> <georss:polygon>22.1240349 91.828207 22.6198777 91.9330457 22.4657325 92.7703707 21.9696015 92.6624089 22.1240349 91.828207</georss:polygon> <content type="text"> Radarsat-2 Scene Parameters ---> Acquisition date : 2013-01-16 23:48:07.024 Orbit : 26588 ImageOrDatasetId : 239161 Beam Type : Multi-LookFine Beam : MF22W Station : G TransmitPolarization : H ReceivePolarization : H Station : G </content> </entry>

CCMEO OpenSearch Implementation (con’t)

Format of metadata within <content> tag might change according to CWIC best practices

Radarsat-2 scene metadata and browse will be harvested by COVE team via OpenSearch

CCMEO OpenSearch Implementation (con’t) :Oracle Database Query

Paging can be implemented easily within an Oracle database SQL query instead of programatically sorting through query results :

SELECT * FROM ( SELECT z.*, rownum rnum FROM

( SELECT a FROM tablex b WHERE xxxx ) z where rownum <= $end_row )

where rnum >= $start_row ;" >> $QUERY

Ordering Radarsat-1 and Radarsat-2 Imagery

http://129.174.131.231:9003/CWICEmailHandler/handler?acq_date=2010-01-15T23_34_02&image_identifier=66793&beam_identifier=SpotlightA&transmit_polarization=H&receive_polarization=H&satellite=Radarsat-2

Ordering Radarsat-1 and Radarsat-2 Imagery (con’t)

User BrowserCCMEO

OpenSearchModule

CWIC CGI

Get User Contact Information

OpenSearch Query

OpenSearch Atom Response

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HTML Form - scene parameters

HTML Form -> Scene Parameters And User Contact Info

Send Email To MDA(Javascript)

Scene ParametersAnd User Contact Info