TODWL and other Navy airborne wind lidar plans including nocturnal flight plan in November G. D. Emmitt SWA Working Group meeting Snowmass, CO 18 July,

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Presentation transcript:

TODWL and other Navy airborne wind lidar plans including nocturnal flight plan in November G. D. Emmitt SWA Working Group meeting Snowmass, CO 18 July, 2007

TODWL Plans Skywalker flights in November,2007 –Nocturnal atmospheric advantages for autonomous UAV flight control Possible nocturnal flights as part of Army SBIR project ADLAATS (Airborne Doppler Lidar Analysis and Adaptive Targeting System) Possible Smart Towed Platform experiments at night. Preliminary test flights of Navy funded ILIMMS (Integrated Lidar Mission Management System)

NRL P3 DWL for T-PARC ONR (Ron Ferek) has committed to installing a replication of TODWL on NRL’s P3. Intention is to support the 2008 T-PARC with an airborne combination of a DWL and Doppler radar (NCAR’s ELDORA)

ELDORA on NRL P3

ELDORA Characteristics Number of Radars2 (fore and aft) Wavelength3.2 cm Transmit Frequency GHz Beamwidth (circular)1.8 ° Antenna Gain38.7 dB Polarization (00 elevation)horizontal First Sidelobe Power-35 dB Beam Tilt Angle (fore and aft)± ° Antenna Rotation Rate5-144 °/s Dwell Time7-50 ms Rotational Sampling Rate ° Peak Transmitted Power35-40 kw Receiver Bandwidth MHz Receiver Temperature (at antenna)<600 °K Pulse Repetition Frequency Hz Minimum Detectable Signal (at 10 km)-12 dBZ Unambiguous Range km Unambiguous Velocity (single PRT)± m/s Unambiguous Velocity (dual PRT)± m/s Number of Frequencies4 Pulse Chip Length µs Range Averaging1-4 gates Total Cell Length m Along Track Sweep Spacing km

P3 DWL Use existing subsystems where possible –Transceiver, prior TODWL MAG1 or MAG1 from ARL (Dave Ligon) –Data system and PEU from prior TODWL –Bi-axis scanner currently at NASA/LaRC Only other copy of the TODWL scanner Mount scanner “backwards” to avoid P3 high wings Outstanding issues –Door mounting of scanner –Certification of scanner of P3 installation

The instrument 2µm coherent detection 4-6 mJ (330 nsec pulse) (NEW: 2 mJ) 80 Hz (NEW: 500Hz) water cooled (NEW: heat exchanger) ~7-10% total system efficiency 10 cm two axis scanner, side door mounted GUI with realtime instrument control and data display Weight: 850lb Power: 750watts

TODWL 2-axis scanner

Starboard rear window

Schedule October –Final installation plans –Checkout of systems (pre installed) January –Installation and pre-flight checkout February –Check flights near Pax River WSR participation TBD.