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Barcelona Forum on Ph.D. Research in Communications, Electronics and Signal Processing

Barcelona Forum on Ph.D. Research in Communications, Electronics and Signal Processing 21 st October 2010. On-ground tests and measurements of the Passive Advanced Unit Synthetic Aperture (PAU-SA) Isaac Ramos Pérez, Thesis Advisor: Adriano José Camps Carmona. Outline.

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Barcelona Forum on Ph.D. Research in Communications, Electronics and Signal Processing

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  1. Barcelona Forum on Ph.D. Research in Communications, Electronics and Signal Processing 21st October 2010 On-ground tests and measurements of the Passive Advanced Unit Synthetic Aperture (PAU-SA)Isaac Ramos Pérez, Thesis Advisor: Adriano José Camps Carmona

  2. Outline • Introduction and objectives • PAU-SA’s concept • Work Plan • Potential improvements for future SMOS’s • PAU-SA’s processor • PAU-SA’s assembled process • Preliminary results • Conclusions

  3. Introduction and objectives • The SMOS mission: • Retrieve global and frequent data of Soil Moisture and • Ocean Salinity • New kind of spaceborne Y-shaped aperture synthesis • radiometer: • MIRAS (Microwave Imaging Radiometer • by Aperture Synthesis) • ESA Earth Explorer, Scheduled for 2010 • Objective: • Test potential improvementsfor future MIRAS payloads • New instrument: • Passive Advanced Unit - Synthetic Aperture (PAU-SA) • Award EURYI 2004 by A. Camps / Patented

  4. PAU-SA concept PAU-RAD PAU-GNSS-R PAU-IR

  5. Work Plan

  6. Potential improvements for future SMOS’s

  7. PAU-SA processor Simulation Characterization Processing window Source panel Antenna panel

  8. PAU-SA’s assembled process 1.3 m Structure AutoCAD design and implementation Mobile Unit AutoCAD design and implementation

  9. PAU-SA’s assembled process • PAU-SA in Assemble process • Calibration and validation test Master clock and buffers for clock distribution ADCs + FPGA (correlations and power estimation) PAU-SA instrument during integration process

  10. PAU-SA’s assembled process 2008 2009 2010 2010 2010 2010 1st Barcelona Forum on Ph.D. Research in Electronic Engineering 10

  11. Preliminary results Real data: Single baseline response Measurements at UPC anechoic chamber Normalized correlation (I and Q) vs. number of samples Power variance versus number of samples Minimum Allan’s variance for normalized correlations (real and imaginary parts) for 200 s Minimum Allan’s variance for power at 15 s→ visibilities desnormalization

  12. Preliminary results Rectangular filter PRN Signal FFT Az +/- 10º, +/- 20º El +/- 10º, +/- 20º Pol H Az= 0º El= 0º Pol H Az= +10º El= 0º Pol H Az= +20º El= 0º Point Source : PRN or tone Moving the Instrument (without control temperature) Pol V Az= 0º El= +10º Pol V Az= 0º El= +20º

  13. Conclusions Long Project with different tasks: • RF/FI Hardware designer - Digital Hardware: FPGA /PICs • Analog Hardware - Software programmer (Simulator) • System Assembled and tested – Director 5 PFCs (Coordination) • TEAM work, collaboration with: • GUTMAR (Mobile Unit) Project • Funcadió Eduard Soler (Mobile Unit) Mechanic • Student designers • PAU TEAM (brainstorm meetings ) • Several UPC personal • Implementation of an end-to-end physically-based simulator for data acquisition & processing, • PAU-SA’s instrument has been assembled and tested internally, • Preliminary test with the instrument has been done successfully,

  14. Thank you for your attention

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