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Vaisala weather radar offerings:Weather Radarsand Sigmet Products
Vaisala and Sigmet are now together.
Pauli Niska-Pudas
©Vaisala | 2007-09-12| PNP | Page 2
Vaisala timeline
• 2003 Decided to develop own product – 2003• Maximize use of inhouse expertise of similar products mainly mechanical
design
• December 2004 the 1st prototype installation to Helsinki University Kumpula Campus
• C-Band Dual Pol Doppler Klystron Radar
• January 2006 Sigmet acquisition• Since acquisition Sigmet staff increased by 50%
•2005 decision to develop production models• C-Band Doppler Dual Pol Magnetron • C-Band Doppler single pol Magnetron• Focus on dual pol and dual pol applications with cooperation partners
•2007 Orders of five(5) dual pol Radars were received
©Vaisala | 2007-09-12| PNP | Page 3
Vaisala Antenna/Pedestal
©Vaisala | 2007-09-12| PNP | Page 4
Traditional weather radar vs lifecycle
Traditional Weather Radar
Horizontal polarization only
Transmitted PulseReflected ”echo”
*
* May not be feasible for old WRs
©Vaisala | 2007-09-12| PNP | Page 5
WRM100 Sales Products Antenna/Pedestal and Transceiver
IRIS/Radar
TCP/IP Line
©Vaisala | 2007-09-12| PNP | Page 6
Polarimetric Weather Radar vs lifecycle
Polarimetric Weather RadarSimultaneus horizontal and vertical
polarization
Transmitted pulseReflected ”echo”
©Vaisala | 2007-09-12| PNP | Page 7
WRM200 Sales Products Antenna/Pedestal and Transceiver
IRIS/Radar
TCP/IP Line
©Vaisala | 2007-09-12| PNP | Page 8
WR Sales Products, Central Site
WR1
WR2
WR29
TCP/IP Line
©Vaisala | 2007-09-12| PNP | Page 9
Typical Weather Radar Installation (UPGRADE)= Vaisala interest!UPGRADE
©Vaisala | 2007-09-12| PNP | Page 10
Radar Signal Processor (RVP8) and Radar Control Processor (RCP8)
RVP8 Main ChassisRVP8 IFD
RVP8 Digital Receiver•Core technology for USA NEXRAD / TDWR•Direct Digitization at Radar IF•Full Dual Polarization support•Digital waveform generation for supporting techniques such as pulse compression•Advanced Gaussian Model Adaptive Processing (GMAP)
RCP8 Radar Control Processor•Used to allow connection of Sigmet Products to any weather radar•Performs antenna motor control•General purpose control/status/BITE•Can be packaged into same chassis as RVP8 and/or IRIS
Proposed in high-reliability single chassis package
©Vaisala | 2007-09-12| PNP | Page 11
Vaisala Dual Pol antenna
•Dish Size 4.5 m
•Weight 600 kg
•Antenna Gain 45 dB
•Beam Width 1.0 deg
•Peak Side Lobe –28 dB
•Peak on Horizontal axis –33 dB
•Integrated Cross Pol Isolation -35 dB
©Vaisala | 2007-09-12| PNP | Page 12
Verified performance of Vaisala Weather Radar antenna
Good antenna gives good results!
©Vaisala | 2007-09-12| PNP | Page 13
Pedestal system
•Antenna elevation angle span -3 to 110 deg
•Antenna scanning speed 0 to 40 deg/s
•Antenna acceleration 20 deg/s²
•Positioning accuracy 0.1 deg
•Pedestal Weight 870 kg
•Total weight with antenna 1470 kg
The azimuth and elevation drive mechanisms used in Weather Radar is
field proven. The drive mechanism has very successfully been used >15 yrs
in other mainly military systems. Over 600 systems fielded!
©Vaisala | 2007-09-12| PNP | Page 14
Vaisala antenna 5ºelevation set up time within 1s
Red line shows Vaisala antenna set-up timeBlue line shows traditional servo system set-up time
1s 6..8s
Benefit: Timesaving in volume scans
©Vaisala | 2007-09-12| PNP | Page 15
Magnetron transmitter versus klystron transmitter
Magnetron single cabinet Klystron dual cabinet
©Vaisala | 2007-09-12| PNP | Page 16
Key specifications of the magnetron vs klystron
Magnetron:
•Free running oscillator
•Modulator: Solid State
•Peak power: 250kW
•Stability: 0.5 degrees (40dB)
•Pulse compression: No
•Simplicity: Simple
•Relative costs: 1.0
•Maintenance: Easy
•MTTR: Low
•Reliability: High
Klystron:
•Controlled amplifier
•Modulator: Solid State
•Peak power: 250kW
•Stability: 0.1 degree (50dB)
•Pulse compression: Yes
•Simplicity: Complicated
•Relative costs: 2.5 times magnetron
•Maintenance: Complicated
•MTTR: Medium
•Reliability: High
©Vaisala | 2007-09-12| PNP | Page 17
Vaisala Goal is to go one step further: easy-to-read products for end users using the polarimetric information
Any radar Dualpol radar
RAIN
NOT RAIN
Vaisala Application
©Vaisala | 2007-09-12| PNP | Page 18
NEW HydroClass (dual pol application) Vaisala product available
New
©Vaisala | 2007-09-12| PNP | Page 19
Surface observations
©Vaisala | 2007-09-12| PNP | Page 20
• More accurate rainfall estimates
• Distinguishes among snow, sleet, hail, rain and non-met targets.
• Identifies sea clutter, ground clutter, birds, insects, chaff
• Attenuation correction. S-Band performance at C-Band price.
• Bright band determination
Benefits of Dual Polarization
©Vaisala | 2007-09-12| PNP | Page 21
List of basic and full IRIS products
�WIND
�VVPXSECT
�VIL�TRACK
�TOPS�WARN
�SRI�USER
�RAINN�RHI
�RAIN1�RTI
�MAX�RAW
�HMAX�IMAGE
�DWELL�PPI
�CAPPI�FCAST
�BASE�BEAM
Full set (incl basic)
Product nameBasic setProduct name
©Vaisala | 2007-09-12| PNP | Page 22
List of optional IRIS products
IRIS data overlay on Google earth Google earth
Lightning data overlay on selected Radar dataLightning
Hydrometeor ClassificationHydroClass
Satellite underlays imported as USER products. MCIDAS format images supported.
IRIS / Satellite
Manual and/or automatic 3D rendering of multi level CAPPI cube data with image zoom, tilt and rotate.
IRIS / 3D
A shear line (frontal boundary), marks the transition between two air masses on the image.
SLINE
This product detects wind shear in the atmosphere, allowing the detection of microbursts, gust fronts, mesocyclones, cold fronts, and atmospheric waves.
SHEAR
Provides a mechanism for including velocity (Doppler) data from another radar site now enabling the measurement of horizontal wind in addition to vertical wind.
NDOP
Produces a single composite image of radar data from many different radar sites.COMP
Rain Gage data display with histogram pop-upGAGE
Calculates the precipitation accumulation in subcatchment areas such as watershed areas.
CATCH
Short Product DecsriptionProduct nameNew
New
New
©Vaisala | 2007-09-12| PNP | Page 23
Availability of Vaisala Weather Radar products now, later and key events
•Now • Sigmet upgrades to any make operating at any Band (S, C or X)
•2007• Vaisala Weather Radar specifications are available• WRM200 Vaisala C-Band Doppler Polarimetric Doppler Magnetron WR• WRM100 Vaisala C-Band Doppler Magnetron WR
•Later• Other transmitter options will be available and new polarimetric options• ERAD European Weather Radar Conference at Helsinki late June 2008
©Vaisala | 2007-09-12| PNP | Page 24
Many Many scatterersscatterers in relative motion (courtesy in relative motion (courtesy IsztarIsztar ZawadzkiZawadzki))
Thank you for your attention
©Vaisala | 2007-09-12| PNP | Page 25
CAPPI (constant altitude) and XSECT (cross-section)Heavy rainfall during world championship of athletic Aug 2005
©Vaisala | 2007-09-12| PNP | Page 26
PPI, dBZ
©Vaisala | 2007-09-12| PNP | Page 27
PPI, Doppler speed
©Vaisala | 2007-09-12| PNP | Page 28
TOPS: cloud top on km (or 1000 ft)
©Vaisala | 2007-09-12| PNP | Page 29
MAX with side panels
©Vaisala | 2007-09-12| PNP | Page 30
VVP (wind profile) and WIND
©Vaisala | 2007-09-12| PNP | Page 31
Wind barbs - another user-friendly way to show Doppler data
©Vaisala | 2007-09-12| PNP | Page 32
Shearlines superimposed to CAPPI reflectivity
©Vaisala | 2007-09-12| PNP | Page 33
GAGE (here superimposed to radar-based accumulation)
©Vaisala | 2007-09-12| PNP | Page 34
CATCH: Accumulation in river areas
©Vaisala | 2007-09-12| PNP | Page 35
Integrated Data Displays – Satellite Imagery
©Vaisala | 2007-09-12| PNP | Page 36
NEW HydroClass (dual pol application) Vaisala product available
New
©Vaisala | 2007-09-12| PNP | Page 37
Integrated Data Displays – Real Time Lightning
New
©Vaisala | 2007-09-12| PNP | Page 38
NEW Google earth
New
©Vaisala | 2007-09-12| PNP | Page 39
VIL – vertically integrated liquid
how much water above each location
©Vaisala | 2007-09-12| PNP | Page 40
Weather Products available from Vaisala
•Weather Radars• You will see more by Vaisala Single pol C-Band Doppler Magnetron Weather Radar
WRM100 – Upgrade path into dual pol
• You will see MUCH more by Vaisala Dual Pol C-Band Doppler Magnetron Weather Radar WRM200
•Weather Radar upgrades by Sigmet products to (S, C and X-Bands)• RVP8 Signal Processor• RCP8 Radar controller• IRIS Software packages:
– Basic, extended and optional– Options include: HydroClass, Lightning data, Rain Gage, Satellite and Google
Earth composites
•New services available• Remote monitoring• Support and maintenance contracts
•More products will be added into our product portfolio in near future.