ATA s Nanoradian-Class Rotational Sensors. 10 November 2009
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1 ATA s Nanoradian-Class Rotational Sensors 10 November 2009
2 ATA Overview Founded 1975 A-TECH Corporation, d.b.a. Applied Technology Associates Customers Include USAF, Sandia NL, US Army, MDA, NASA, US Navy, and Aerospace and Defense Companies Approximately 250 Employees Awards and Distinctions 2008 Minority Manufacturer of the Year 2004 SBA National Prime Contractor of the Year 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, NM Headquarters Kirtland AFB AFRL and Big Crow Support Sites North Oscura Peak, WSMR AFRL Laser Test Facility Las Cruces, NM WSMR Support Site ATA is an Established Technology Company with a Proven Track Record 2
3 ATA Overview Cont d Raytheon ISO-9001 Certified Class 10,000 Clean Room Approved Vendor Ball Aerospace Lockheed Martin Boeing Raytheon Produced Space Qualified Hardware Lockheed Martin Boeing Raytheon Sandia National Laboratories 3
4 Overview ATA has a history of inventing sensors in response to customer requests or internally identified needs 4
5 MHD ARS Sensing Concept Electrode Areas Conducting Fluid Magnetic Flux Density Permanent Magnet Angular Velocity (rad/s) B w S N Sensitive Axis U q E + Voltage Output Proportional to Angular Rate - Electric Field Relative Velocity High Performance High Bandwidth: > 1,000 Hz Low Noise Floor: <100 nrad NEA (1-1kHz) High Dynamic Range: > 100 db Low Cross-Axis Sensitivity Simple Design Small Size: 1.0 x 1.0 x 1.3 Low Weight: 100 grams Low Power: < 0.3 Watts Rugged Design: > 1,000 g MHD Sensor The MHD concept resulted from an Air Force request for alternate angular sensing techniques
6 Augmenting Sensors with Other Technologies Radiation-tolerant design (100Krad environment) ATA designed and implemented FPGA processing architecture, collaborated in board design 6
7 Microradian-Class Testing ATA has developed test facilities and techniques suitable for a range of motion profiles 7
8 ARS Specifications Model ARS-06 ARS-15 ARS-14 ARS-24 Range +200 rad/s +10 rad/s +0.5 rad/s rad/s Scale Factor 50mv/rad/s 1 V/rad/s 20 V/rad/s 2120 V/rad/s -3dB Bandwidth 0.4-1kHz 4 1kHz 1 1 khz Hz Rate Noise, 1-1kHz 4.7 mrad/s 27 µrad/s 5 µrad/s 1 µrad/s Displ. Noise, 1-1kHz 50 µrad 0.8 µrad 50 nrad 8 nrad Dimensions (inches) 0.7 x x 0.8 x x 1.3 x x 2 x 4 Mass (grams)
9 Frequency Response Magnitude ATA MHD ARS Frequency Response Magnitude (FR Magnitude quoted at 10 Hz) ARS-24 (2120 V/rad/s) FR Mag (db ref 1V/rad/s) ARS-14 (20 V/rad/s) ARS-15 (1 V/rad/s) ARS-06 (0.05 V/rad/s) Frequency (Hz)
10 Frequency Response Phase ATA MHD ARS Frequency Response Phase Phase (degrees) Frequency (Hz)
11 Rate Noise 1.0E E-07 ATA MHD ARS Rate Noise (Noise quoted from Hz) ARS-06 (4.67 mrad/s RMS) 1.0E E-09 (Rad/s) 2 /Hz 1.0E E E E E E-15 ARS-15 (26.6 ì rad/s RMS) ARS-14 (2.84 ì rad/s RMS) ARS-24 (0.36 ì rad/s RMS) 1.0E Frequency (Hz) ATA MHD ARS Displacement Noise (Noise quoted from Hz) 1.0E-06
12 Displacement Noise (Rad) 2 /Hz 1.0E E E E E E E E E E E E E E E E E E-23 ARS-06 (50 ì rad RMS) ATA MHD ARS Displacement Noise (Noise quoted from Hz) ARS-15 (0.8 ì rad RMS) ARS-14 (40 nrad RMS) ARS-24 (5 nrad RMS) 1.0E Frequency (Hz)
13 0.1 µg Accelerometer These radiation hardened DC accelerometer units can measure microradian-level tilts in the presence of strong background acceleration (0.25g rms +). Dennis 13
14 Seismically Stable Platform Tilt Sensor (1990) Noise -174 db rad Corner 6.9 mhz
15 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
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