integrated metadata model for radar sensors - … · integrated metadata model for radar sensors...

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Integrated MetadataModel for Radar Sensors

Integrated MetadataModel for Radar Sensors

Anthony Galassi, ChairMetadata Profile Working GroupMay 2008ISO TC211 Standards in Action Workshop

Anthony Galassi, ChairMetadata Profile Working GroupMay 2008ISO TC211 Standards in Action Workshop

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Agenda

• MPWG • Radar Image Metadata Work• Results and Future Effort• Summary

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• NITFS Technical Board (NTB)• Motion Imagery Standards Board (MISB)• Community Sensor Model Working Group (CSMWG)• GEOINT Reporting Focus Group (RFG)• Geographic Portrayal Focus Group (PFG)• Metadata Focus Group (MFG)• Information Transfer & Services Architecture Focus Group (ITSA)• Application Schemas for Feature Encoding Focus Group (ASFE)

GEOINT Standards Community

Metadata ProfileWorking Group (MPWG)

NITFS TechnicalBoard (NTB)

DoD IT Standards Registry (DISR)

GWG Focus Groups

Community Representation-Subject Matter Experts

Geospatial Intelligence Standards Working GroupChair: Mark DeMulder, NGA/OCIO

DoD/IC Forum for Standardization Activities

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MPWG Goal

The MPWG envisions an enterprise that supports a seamless, unified common operating picture. A community-wide, physics-based, metadata model will result in compatible products across the enterprise for the processes common to multiple sensors. By capturing physics common to multiple sensors, we enable interoperability of components throughout our architectures.

GWG Web Site Link: http://www.gwg.nga.mil/

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S (Sensor)

ACTIVE PASSIVE

Non-Scanning Non-Imaging

Scanning Imaging Non-Scanning Scanning

Imaging

• Microwave Radiometer

• Microwave Altimeter

• Laser Distance Meter

• Image Plane Scanning

Passive Range Array

• Object Plane Scanning

Real Aperture Radar

• Synthetic Aperture Radar

(SAR)

Sensor (Imagery) Geospatial Metadata Levels

Mandatory Metadata

Levels of Metadata

• Cameras

• Microwave Radiometer

(examples not sorted for these purposes)

Diagram adapted from Specific Sensor Geospatial Dataset in NSG Geospatial Core Metadata Profile (NGCMP) for context purposes

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Sources of Remote Sensor Data

SAR

Reflected Solar EnergyReflected Solar Energy Emitted EnergyEmitted Energy

PI (airborne)VNIR

RadarSats

FLIR

Wavelength in Micrometers (μm)

ASARS

Slide created by NGA/IID and NGA/PLMTI – Multi spectral Thermal Imager (DOE)

Target Signatures & Search Cueing

QuickBirdIkonosGeoEye

(Reflective MSI)

MTI

ExtremeInfrared

NearInfrared

MidwaveInfrared

LongwaveInfrared

BandBand

Microwave

50.4 1 1.5 2 3 6 8 12 15

LWIRLWIRSWIRSWIRNIRNIRVisibleVisible MWIRMWIR

0.9

Composite signatures revealmore about a targets behavior

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MPWG Radar Sensor Work• Harmonization of metadata across current

sensor programs• Publish standards that include a data

dictionary of the harmonized metadata • Enable common exploitation environment

– data products, metadata, & tools• Finish Data Model• Finish Schemas

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Processed SAR data(SAR: Synthetic Aperture RADAR)

examples:

detected imagedynamic imagecoherent change detectioncolor multiview

other …

What are SAR Products?

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Radar Metadata Focus

Engineer the Metadata :– from the sensor platform

through the exploitation environment– inherit, augment, delete metadata – maintain correct metadata for every process – result in multiple data products

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How is the SAR Metadata Used?

Signal, ImageProcessing

Down LinkProcessing

SensorsABCDE

ExploitationEnvironment

L2

Product Generation

Using Profile

L1

LibrariesDissemination

L3

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Product Enabling MetadataProduct: Coherent Change Detection (CCD)

INPUT: Level 2 Data - Paired Images:

Image Data: complex compressed

Metadata: collected area, timeazimuth & graze anglesbandwidth, frequency, modulation

OUTPUT: Level 3 Product - CCD:

Image Data: pixel correlation map

Metadata: area & registration pointstime, azimuth, & graze angle deltasintersecting bandwidths

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SAR Metadata ManagementMetadata is inherited, augmented, deleted

through the processing chain

inheriteddeleted

augmented

Level 1 Products

Level 2 Products

Level 3 Products

Final Product Description

Data Source: Sensor, Platform ..

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ephemeris(platform position over time)

generated &

updated

used in IFP geometry

model

used in artifact

processing(shadows,layover)

used in artifact location

comparison

inheriteddeleted

augmented

Sensors L2

L1

L3

Signal, ImageDown Link

ExploitationProduct Generation

SAR Metadata Management

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waveform parameters(transmitted/received signal form)

generated used in detection

processing

Sensors L2

L1

L3

inheriteddeleted

augmented


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inheriteddeleted

augmented

analog to digital bias(sensor electronics status)

generated used in signal

compensation

Sensors



L2

L1

L3


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inheriteddeleted

augmented

image vertices(corners of processed data)

generated after IFP

updated for selected

areas

updated for selected targets

Sensors L2

L1

L3


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inheriteddeleted

augmented

phase correlation(signal changes)

generated for change detection

updated through time

Sensors L2

L1

L3


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color allocation(phenomenology depiction)

multi-collectionproduct

Sensors L2

L1

L3

inheriteddeleted

augmented


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Multiple Metadata Formulations

Sensor Metadata Format Specification Document

Sensor1: GrazAngle (degrees)

Sensor2: GA

Sensor3: None

Sensor4: GR (radians)

Sensor-independent:

GrazingAngle (in degrees)

The need for harmonization example:

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Example Schema

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Recent Results

• Common Radar Dictionary of terms• Metadata defined to enable repackaging of

data between levels of data processing• Metadata Model being developed• Profile of Standards for Tools

Profile: subset of metadata for application• Harmonization and mapping to TC211

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Work with other GWG Focus Groups and ISO TC211

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Work with other GWG Focus Groups and ISO TC211

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Enterprise Metadata Requirements

• Archival/Retrieval/Discovery

• Distribution

• Display

• Mensuration

• Product Generation

• Quality Metrics

• Exploration

The MPWG, as a sub-group of the GWG, supports the NSG in its challenge to provide common geospatial services within a Service Oriented Architecture (SOA).

These interoperability requirements promote availability of geospatial information.

Examples:

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Future Work• Incorporate interface standard profiles for

additional products• Document a taxonomy of product types• Determine core metadata for each class

of product.• Define metadata requirements for

functional capabilities • Data prototyping

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Summary

• MPWG functions as a subgroup of the GWG to develop data standards for the geospatial community– scientifically engineered metadata standards

to support complex analysis– harmonizing efforts with ISO TC211

standards work

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www.nga.mil

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The MPWG

SARSubgroup

Metadata Profile

Working Group (MPWG)

ONIRSubgroup

EOSubgroup

UNCLASSIFIED

UNCLASSIFIED

The MPWG enables interoperability across the NSG

MPWG Purpose : “An enterprise that supports a seamless, unified common operating picture. Community-wide standards are enablers that provide a foundation for interoperable applications and compatible intelligence products that execute seamlessly across architectures.”

SYERS-2A MPWG (S2AMPWG)

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integrated metadata model for radar sensors - … · integrated metadata model for radar sensors...

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