1. X-band Radar Detection of Point Scatterers David Breton Nicholas Buckminster Michael Leuchtenburg Advisor: S. Frasier

2. Now… Current System –S-band FMCW –Vertical Profiling –Clear-air scatter –Watch atmospheric boundary layer turbulence –Also receives interference from other sources

3. The Solution Add X-band FMICW –Sees point scatterers better than the current system –Combined with S-band response can create cleaner data

4. The System Diagram, So Far

5. What We Said We’d Do All analog components other than the LPF Working sampling, but not synchronization Design of a synchronization method Determining whether we need a microcontroller for real-time control

6. Analog Construction All analog components other than the LPF –Acquired and assembled, except for receive-side IF amplification Signal levels attenuated and amplified to meet intermediate component requirements

7. Sampling Working sampling without synchronization –Gage card receives signals and records data –Proven to be able to sample with at least a 1MHz range

8. Synchronization Design of a synchronization method –The sampling system will be triggered at the beginning of each sweep –This will allow it to determine when the data is valid and when it is not

9. Real Time Control Why we need a microcontroller for real-time control –Tight timing constraints Starting sweeps Transmit/Receive Switching Signal receive sampling to begin –Don’t have any way to control T/R switch from computer

10. What We Did All analog components other than the LPF Working sampling, but not synchronization Design of a synchronization method Determining whether we need a microcontroller for real-time control

11. Upcoming Events CDR –Processing software operational –Functional prototype Demonstration Day Thank You - Questions, please