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Assessment of Impacts on Radar/IR Detection Vulnerability and EA/ISR Effectiveness Prof Ken Davidson Department of Meteo

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Assessment of Impacts on Radar/IR Detection Vulnerability and EA/ISR Effectiveness Prof Ken Davidson Department of Meteorology Root 231 19 January 2006\. Near-Surface Collected: Vessel / Buoy Airflow Waves. Atmospheric Numerical Predictions: Mesoscale COAMPS.

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slide1

Assessment of Impacts on Radar/IR Detection Vulnerability and EA/ISR Effectiveness

Prof Ken Davidson

Department of Meteorology

Root 231

19 January 2006\

slide2

Near-Surface Collected:

Vessel / Buoy

Airflow

Waves

Atmospheric Numerical Predictions:

Mesoscale

COAMPS

Satellite sensor collected:

Duct Top Height

SST

In situ Upper-Air Soundings:

Rawinsondes

Microwave/Lidar

Land

Wireless Link

Upper-Air

COAMPS profiles

Duct Fields

RF

IR

Sea

100%

100%

Near-Surface

NPS Bulk Model

80%

60%

30%

Continuous, 3-D Refractivity

Extinction

Scintillation

0%

Propagation Models

EM: APM

IR: EOSTAR

Effects Models

AREPS

TAWS

= examined/applied

Integrated Approach for RF/IR Impact Assessment:

Legend: METOC Data Sources, Refractivity Models,Propagation Models, Effects (SPP) Models

slide3

Sonic

Anemometer

RH/T Profiles

Fit

Bulk

Wave

Staff

Developed/Demonstrated METOC Technologies

slide4

Sonic

Anemometer

RH/T Profiles

Wave

Staff

Developed/Demonstrated METOC Technologies

slide6

Experiment Area & Measurement Points

IR Detector

7.2 km path

NPS Buoy

IR Source

slide7

NPS Buoy Deployments

  • 1 Dec 04 – 9 Mar 05
  • 17 Mar 05 - 6 Jun 05
  • 9 Jun 05 – 25 Jul 05
  • 27 Jul 05 – 17 Oct 05
  • 20 Oct 05 – ~15 Dec 05
slide8

Effects

Propagation Loss for Standard Atmosphere

M increases with height

slide9

NPS Evaporation Duct Model

NPS Model computes profiles

Radar waves bend up

Measured parameters (WS, Tair, Tsea, RH)

Evap Duct Height

Radar waves bend down

Predicts atmospheric properties that affect radar propagation (modified refractivity profile) from basic met measurements

slide10

Effects

Propagation Loss for Evaporation Duct

Duct Ht = 65 ft, radar @ 55 ft

Greatly Increased Detection Ranges Possible

Duct

slide12

Propagation Loss for Surface-Based Duct

Top of Trapping Layer

Duct

Increased Detection Ranges Possible

Skip Zone

slide13

Effects

Propagation Loss for Evaporation &

Surface-Based Ducts

Sfc-Based Duct

Complex Interference Zone

Evap

Duct

No Skip Zone

electro optical systems
Electro-Optical Systems

Overview

Components

Verification

Operations

  • Forward Looking Infrared imagers, sensors (FLIR)
  • Night Vision Goggles (NVG)
  • TV systems
  • Laser systems
    • Designator
    • Detector
    • Rangefinder
goal of our support

Approach axis & timing

  • Optimum altitude
  • Sensor cueing
  • Thermal crossover
  • Polarity
  • Illumination (Wx -impacted)

Infrared Target Scene Simulation

(IRTSS)

  • Visualizations
    • Simulation of cockpit display
    • Situational awareness
  • Dynamic imagery
    • Circular loop
    • Level approach
Goal of our Support

Overview

Components

Verification

Operations

  • Performance Prediction System to enable operators to exploit mission environment
  • TAWS & IRTSS optimize mission effectiveness while minimizing threat exposure
components
Sensor models

NVTHERM

CCDCAM

FLIR 92

Developer updates

Target / Background

New targets

Target optimization

Background analysis

Automated analysis

Seasonal variations

Satellite support

Components

Environment

  • Atmospheric transmission
  • Aerosols
  • Turbulence
verification
Verification

Overview

Components

Verification

Operations

  • Types of analysis
    • Detection
    • Recognition
    • Identification
  • Time series
  • Angle series
  • Solar effects
    • Target/background thermal models
  • Cloud effects
    • Cloud types
    • Cloud density
    • Cloud concentration