ATAATA’’ss NanoradianNanoradian-Class-Class

Rotational SensorsRotational Sensors

10 November 2009

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ATA OverviewATA Overview

• Awards and Distinctions

– 2008 Minority Manufacturer of the Year

– 2004 SBA National Prime Contractor of theYear

– 2005 NM Innovator of the Year

– USAF Small Business R&D Awards

– SBA Administrator’s Award

– Multiple Patented Technologies

• Operating Sites in New Mexico

– ATA 1300 Britt Street, Albuquerque, NMHeadquarters

– Kirtland AFB – AFRL and Big Crow SupportSites

– North Oscura Peak, WSMR AFRL LaserTest Facility

– Las Cruces, NM WSMR Support Site

• Founded 1975 A-TECH Corporation,d.b.a. Applied Technology Associates

• Customers Include USAF, Sandia NL, USArmy, MDA, NASA, US Navy, andAerospace and Defense Companies

• Approximately 250 Employees

ATA is an Established Technology Company with a Proven Track Record

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• ISO-9001 Certified

• Class 10,000 Clean Room

• Approved Vendor– Ball Aerospace

– Lockheed Martin

– Boeing

– Raytheon

• Produced Space QualifiedHardware– Lockheed Martin

– Boeing

– Raytheon

– Sandia National Laboratories

ATA Overview ContATA Overview Cont’’dd

Raytheon

3

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• ATA has a history of inventing sensors in response to

customer requests or internally identified needs

OverviewOverview

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MHD ARS Sensing Concept

• The MHD concept resulted from an Air Force

request for alternate angular sensing techniques

Angular

Velocity

(rad/s)

Sensitive

Axis

Electric

Field

Relative

Velocity

Electrode

Areas

Conducting

Fluid

Magnetic

Flux

Density

Permanent

Magnet

Voltage

Output

Proportional

to AngularRate

B

E

SN

w

+

-

Uq

MHD SensorMHD Sensor

High PerformanceHigh Bandwidth: > 1,000 Hz

Low Noise Floor: <100 nrad NEA (1-1kHz)High Dynamic Range: > 100 dBLow Cross-Axis Sensitivity

Simple DesignSmall Size: 1.0 x 1.0 x 1.3”

Low Weight: 100 gramsLow Power: < 0.3 WattsRugged Design: > 1,000 g

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Augmenting Sensors withAugmenting Sensors with

Other TechnologiesOther Technologies

• Radiation-tolerant design(100Krad environment)

• ATA designed andimplemented FPGAprocessing architecture,collaborated in boarddesign

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MicroradianMicroradian-Class Testing-Class Testing

• ATA has developed test facilities and techniques

suitable for a range of motion profiles

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ARS Specifications

1 – 675 Hz1 – 1 kHz4 – 1kHz0.4 - 1kHz-3dB Bandwidth

1 µrad/s5 µrad/s27 µrad/s4.7 mrad/sRate Noise, 1-1kHz

8 nrad50 nrad0.8 µrad50 µradDispl. Noise, 1-1kHz

2 x 2 x 41 x 1.3 x 2.90.8 x 0.8 x 1.20.7 x 1Dimensions (inches)

20002006035Mass (grams)

ARS-24ARS-14ARS-15ARS-06Model

2120 V/rad/s20 V/rad/s1 V/rad/s50mv/rad/sScale Factor

+0.005 rad/s+0.5 rad/s+10 rad/s+200 rad/sRange

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Frequency Response Magnitude

ATA MHD ARS Frequency Response Magnitude(FR Magnitude quoted at 10 Hz)

-50.00

-40.00

-30.00

-20.00

-10.00

0.00

10.00

20.00

30.00

40.00

50.00

60.00

70.00

80.00

0.1 1.0 10.0 100.0 1000.0

Frequency (Hz)

FR

Ma

g (

dB

re

f 1

V/r

ad

/s)

ARS-06 (0.05 V/rad/s)

ARS-15 (1 V/rad/s)

ARS-14 (20 V/rad/s)

ARS-24 (2120 V/rad/s)

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Frequency Response Phase

ATA MHD ARS Frequency Response Phase

-180.00

-90.00

0.00

90.00

180.00

0.1 1.0 10.0 100.0 1000.0

Frequency (Hz)

Ph

ase (

deg

rees)

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Rate Noise

ATA MHD ARS Rate Noise(Noise quoted from 1-1000 Hz)

1.0E-16

1.0E-15

1.0E-14

1.0E-13

1.0E-12

1.0E-11

1.0E-10

1.0E-09

1.0E-08

1.0E-07

1.0E-06

0.1 1.0 10.0 100.0 1000.0

Frequency (Hz)

(Ra

d/s

)2/H

z

ARS-06 (4.67 mrad/s RMS)

ATA MHD ARS Displacement Noise(Noise quoted from 1-1000 Hz)

1.0E-24

1.0E-23

1.0E-22

1.0E-21

1.0E-20

1.0E-19

1.0E-18

1.0E-17

1.0E-16

1.0E-15

1.0E-14

1.0E-13

1.0E-12

1.0E-11

1.0E-10

1.0E-09

1.0E-08

1.0E-07

1.0E-06

0.1 1.0 10.0 100.0 1000.0

Frequency (Hz)

(Ra

d)2

/Hz

ARS-15 (26.6 ì rad/s RMS)

ARS-14 (2.84 ì rad/s RMS)

ARS-24 (0.36 ì rad/s RMS)

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Displacement Noise

ATA MHD ARS Displacement Noise(Noise quoted from 1-1000 Hz)

1.0E-24

1.0E-23

1.0E-22

1.0E-21

1.0E-20

1.0E-19

1.0E-18

1.0E-17

1.0E-16

1.0E-15

1.0E-14

1.0E-13

1.0E-12

1.0E-11

1.0E-10

1.0E-09

1.0E-08

1.0E-07

1.0E-06

0.1 1.0 10.0 100.0 1000.0

Frequency (Hz)

(Ra

d)2

/Hz

ARS-06 (50 ì rad RMS)

ARS-15 (0.8 ì rad RMS)

ARS-14 (40 nrad RMS)

ARS-24 (5 nrad RMS)

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• These radiation hardened DC accelerometer

units can measure microradian-level tilts in

the presence of strong background

acceleration (0.25g rms +).

0.1 0.1 µµGG Accelerometer Accelerometer

Dennis

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Seismically Stable Platform

Tilt Sensor (1990)

Noise

-174 dB rad

Corner

6.9 mHz

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Northfinder

• Current effort underway to develop a 1 mrad

Northfinder

• Based on modulating earth rate onto the ARS-14

by rotating a horizontal sensor in the earth’s

rotation field