1 / 13

The RVP8 TM Digital Tx/Rx and Signal Processor for Weather Radar

The RVP8 TM Digital Tx/Rx and Signal Processor for Weather Radar. Elena Saltikoff. The Famous RVP7. Most widely sold Doppler weather radar processor (over 200 units) All the algorithms of RVP7 are ported to the new RVP8 Architecture.

rosalia
Download Presentation

The RVP8 TM Digital Tx/Rx and Signal Processor for Weather Radar

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The RVP8TM Digital Tx/Rx and Signal Processorfor Weather Radar Elena Saltikoff SIGMET

  2. The Famous RVP7 • Most widely sold Doppler weather radar processor (over 200 units) • All the algorithms of RVP7 are ported to the new RVP8 Architecture. • RVP8: new capabilities, new hardware solutions and a digital transmitter.

  3. Digital Transmitter and Receiver(digitally synthesized IF waveform) More control of the signal • Real time signal correction for I/O samples: - Amplitude correction- Phase stability of magnetrons to nearly as good as klystrons (better clutter cancellation) • Linear dynamic range 98 dB for a 1 s pulse • Linearization (saturation 3-5 dB later due to oversampling)

  4. ForKlystronRadars also • Pulse Compression (less power, less interference) • Frequency agility (dual frequency, more range resolution) • Phase agility (2nd trip cancellation)

  5. Long Expected Life Cycle Easy to maintain, upgrade and expand • Open hardware: standard PCI bus technology • Linux, Pentium, Standard I/O • SoftPlaneTM to control critical I/O • API (Application Program Interface) for own innovations

  6. Nexrad gets RVP8, too • Prototype RVP8 July 2002 • 10 sites during 2003 • 150 sites more 2004 – 2005 • RVP8, RCP8 and IRIS/Radar

  7. Examples of newish algorithms • Adaptive FFT Doppler filter • Random Phase “Doppler Doubler” (for Doppler dilemma) • SQI threshold for V and Z • 2D speckle filter (remove and fill)

  8. Adaptive FFT Doppler filter: Cancellation limits move dynamically within set limits

  9. RandomPhase “DopplerDoubler” • Study the phase of two pulses (for magnetron random, for klystron controlled) • Use SQI threshold for each • Recover the 2nd trip echo • Allows use of higher PRF

  10. 2D Speckle filter • Study 8 neighbors in range and azimuth • Delete or fill ?

  11. Want to know more ? • 23-page technical description available • 3-page paper at ERAD (O’Hora et al.) www.sigmet.com I’ll add some slides for those who want technical details. That’s Hannu, really, cheers !

  12. RVP8/RX RVP8/IO SBC RVP8 Example: Basic Magnetron System DAFC Digital STALO triggers Received IF Magnetron IF IFD fiber downlink antenna angles 10 /100 BASE-T LAN K / V / M PCI BUS

  13. Linearity

More Related