1 / 23

ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

GPM – GV MEETING # 2. NRSA LECTURE. ISRAD. PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL. GROUND VALIDATION INDIAN SCENARIO G.VISWANATHAN - ISRO presented by PROF. V. CHANDRA. ISRO RADAR DEVELOPMENT UNIT, BANGALORE. GPM – GV MEETING. NRSA LECTURE. ISRAD.

rafi
Download Presentation

ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

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. GPM – GV MEETING # 2 NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL GROUND VALIDATION INDIAN SCENARIO G.VISWANATHAN - ISRO presented by PROF. V. CHANDRA ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  2. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL PRESENTATION SEQUENCE: Genesis Ongoing Efforts Instrumentation Sample Data from Opportunities Plans for future Relevance to GPM ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  3. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL • Genesis • GV efforts @ ISRO started with TRMM through then NASDA, with GV as PI from ISRO & T.Kozu from CRL • SHAR for NE Monsoon & Thumba for both SW & NE Monsoon coverage • Converted C band tracking Radars with Weather channel • MST radar (VHF Profiler along with Disdrometer (VV) & Optical Rain gauge @ Gadanki) • Resulted in major collaboration with CRL Japan ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  4. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL Ongoing efforts: GV work continued more as an inter comparison of data from Doppler Weather Radar (Megha -2700) with TRMM as per opportunities Helped as an indirect validation of DWR Products (Z) once TRMM is well established Collaborative work in progress between ISRAD & Academic Institutions in India Gearing up for GV for Megha - Tropiques & GPM ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  5. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL INSTRUMENTATION SYSTEMS Radar Systems : S Band Doppler Weather Radar – Megha 2700 Converted C Band Tracking Radar with weather channel Other Instruments : Disdrometer Fast Response RainGauges (Siphon type ) Surface Observatories with TB Rain Gauges ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  6. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL MEGHA – 2700 Doppler Weather Radar ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  7. GPM – GV MEETING NRSA LECTURE Reflectivity Velocity Sp Width 1. Range (Km) 500 250 250 2. Resolution ( m) 300 300 300 2. Accuracy @23 dBZ 2 dB 1 m/s 1 m/s @ 2 rpm 3.Unambiguous maximum velocity +/- 30m/s for 125 Km Ambiguity Resolution techniques to extend velocity to +/- 60 m/s for 125 Km or +/- 30 m/s for 250 Km. Design goal +/- 60m/s for 250 km ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL DWR System Specifications ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  8. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL DWR System Features Klystron based coherent transmitter Low phase noise signal generation Programmable waveforms High dynamic range Log / Lin Receiver 14 bitADCs PC-PCI bus DSP boards PC based radar controller Data Products on Graphic Workstations GIS based Product overlay Calibration using built in source, & Sun Low sidelobe level Pencil beam antenna Programmable Antenna scan functions Sandwich Radome to withstand gale speeds of 250 Km/hr Polarimetry to be included shortly ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  9. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL MEGHA -2700 CONTROL CONSOLE & WORK STATIONS ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  10. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL THUNDERSTORM -Z ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  11. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL THUNDERSTORM -V ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  12. GPM – GV MEETING NRSA LECTURE PRECIP DATA PRODUCTS Rain Rate CAPPI@1Km ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL GAUGE DATA ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  13. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL • OBSERVATION OF CYCLONES OVER BAY OF BENGAL • CYCLONES ARE CONTINUOUSLY MONITORED USING DWR OPERATED WITH DIFFERENT SCAN STRATEGIES UNDER TIME TAGGED SCHEDULER MODE • RADAR WAVE FORM FOR EACH STRATEGY IS SO CHOSEN TO PROVIDE LONG RANGE OBSERVATIONS • DUAL PRF TECHNIQUE USED TO MINIMISE RANGE - DOPPLER AMBIGUITIES AT LONG RANGES ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  14. GPM – GV MEETING NRSA LECTURE BAY OF BENGAL CYCLONE OF DECEMBER 15, 2003 V Z V ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL DWR OBSERVATIONS ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  15. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL GV FOR SPACE BORNE PRECIPITATION ESTIMATION INTERCOMPARISON WITH TRMM DWR WAS OPERATED FOR INTERCOMPARISON WITH TRMM ON A CAMPAIGN MODE OBSERVATIONS SIMULATANEOUS MEASUREMENTS WITH FAST RESPONSE RAINGAUGE & DISDROMETER CARRIED OUT SAMPLE DATA PROVIDES A TYPICAL INTERCOMPARISON ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  16. GPM – GV MEETING NRSA LECTURE PPI Plot (06 November 2003) DWR (SHAR) (307 Km) 0.5° elevation Figure 1: PPI Plot of DWR Reflectivity over SHAR on 6th November 2003 (07:03:38 UTC) ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  17. GPM – GV MEETING NRSA LECTURE PR Scan (06 November 2003) Orbit No. 34082 dBZ SHAR ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  18. GPM – GV MEETING NRSA LECTURE DWR CAPPI PR dBZ at 5.5 Km height FOV = 1 to 19 (a) (b) ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL Magnified View of near simultaneous reflectivity observations of (a) DWR and (b) PR (TRMM) on 06 November 2003 ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  19. GPM – GV MEETING NRSA LECTURE (a) INTERCOMPARISON WITH TRMM-PR (a) Vertical cross section of DWR (SHAR) (b) PR for the 7th Nov 2003 event. DWR azimuth 136° corresponds to FOV 34 of PR orbit no. 34082. (b) ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL DIFFERENCES IN GROUND RANGE ARE DUE EARTH CURVATURE RECONNING ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  20. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL D DISDROMETER MEASUREMENTS @ SHAR ANALYSIS COURTESY : Dr.Sanjay Sharma, Kohima Science College, Nagaland University. ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  21. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL PLANS FOR IMMEDIATE FUTURE: POLARIMETRIC UPGRADE FOR DWR MESO NETWORK OF AWS WITH RAINGAUGES INTGRATED OBSERVATION & MODEL ASSIMILATION FOR NOWCASTING WEATHER FOR LAUNCH SUPPORT CO LOCATED WIND PROFILER FOR CONVECTION STUDY Ka BAND PATH ATTENUATION MEASUREMENTS WITH BEACON GV FOR MEGHATROPIQUES POTENTIAL INTERNATIONAL COLLABORATION FOR GPM ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  22. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL THANK YOU ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

  23. GPM – GV MEETING NRSA LECTURE ISRAD PRESENTATION TO CHAIRMAN - ISRO & MEMBERS - ISRO COUNCIL ISRO RADAR DEVELOPMENT UNIT, BANGALORE.

More Related