Design Approach Review MDA Completion RPG Build 9'0

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Design Approach ReviewMDA CompletionRPG Build
9.0

• Brian Klein, RSIS
• 13 October 2005

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Contents

• CCR..3
• Concept of Operations..........4
• Impacts to Top Level Architecture.................
  ......................5
• Impacts to WSR-88D Architecture...6
• MDA Data Flow..........................
  ..7
• Design Approach ..................................
  ............................10
• Products......................................
  .................12
• Development Approach...14
• Test Approach...15
• Integration Challenges/Risks..16
• Proposed Schedule..17
• Action Items...18

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CCR

• CCR
• NA05-23001 Complete Transition to the New
  Mesocyclone Detection Algorithm (Build 9.0)
• RC-9375

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Concept of Operations

• Preparing to transition users to the exclusive
  use of MDA based Mesocyclone data
• Alerting/UAM Product
• Alert Timing End of Volume
• Alert Threshold Values 1, 2, 3, 4, 5, 6
  (Strength Rank, AWIPS default value 5)
• Default Paired Product MD (141).
• Combined Attributes Table (CR/CZ, 35-38 CRE/CZE,
  95-98)
• RCM Product (74)
• Based on Minimum Display Filter Rank (default 5)
• Begin central collection of MD product (141)
  after Build 8 deployment
• Eventual removal of the legacy algorithm
  including the M and MRU products (proposed for
  Build 10)

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Impacts to Top-Level Architecture

• External Display Systems
• AWIPS software may be affected by new alert
  category
• Possible SCAN software modifications required if
  parsing of Combined Attributes Table or SCAN use
  of WSR-88D alerting functionality
• Users of RCM, UAM, CR/CZ and CRE/CZE (only the
  Combined Attributes table) may be affected in
  Build 9
• Users of M and MRU should plan to transition to
  MDA products (MD, DMD) prior to planned removal
  of legacy algorithm in Build 10.
• Benefits
• Remove redundant processing
• Remove possibly conflicting mesocyclone
  information
• Early transition to MDA will decrease risk of
  legacy removal

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Impacts to WSR-88D Architecture

• Product Sizes
• Unchanged
• New API
• None known
• CPU
• Unchanged
• Memory
• Unchanged

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Design Approach

• Add new Alert Code and Threshold in both the
  Volume and Forecast alert groups, retaining those
  for the legacy Meso alert until its removal in
  Build 10.
• Increment version number for products containing
  Combined Attributes Table (CR/CZ (35-38) CRE/CZE
  (95-98)
• Change the RCM product to report MDA features
  that meet the minimum display rank threshold
• /NMES03 M05ABC M05DEF M06GHI
• Change the Combined Attribute table in the CZ
  product
• MDL requests version change

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Design Approach (contd)

• UAM Product

ALERT AREA 1
AZIMUTH
278.9 DEG
RANGE 22.1 NM
ALERT
CATEGORY MDA
THRESHOLD 5

EXCEEDING VALUE 6
STORM ID I0
STORM MOTION 216/ 55 DEG/KTS


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Products MD PSB GAB(unchanged in Build 9)

• Mesocyclone Detection
• (MD, 141)

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Products (contd)MD TAB (unchanged in Build 9)
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Development Approach

• ANSI C conforming to RPG Coding Guidelines.
• Develop and test with Build 8v1 on dev3 Blade
  with connectivity to AWIPS lite.
• Test on a Linux platform.
• Coordinate product changes with FSL and MDL by
  providing samples for their testing.

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Test Approach

• cvt display of UAM and RCM as stand-alone
  alphanumeric products
• AWIPS lite display of UAM and RCM using D2D text
  window.
• cvg display of CR and CRE products.
• AWIPS lite display of Combined Attributes Table
  in D2D window.
• Test Cases
• Full Load, 21 April 1996
• No special test cases required.

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Integration Challenges/Risks

• RPG Risk Very Low
• No change to CPU utilization, memory use or
  product sizes.
• External User Risk Low
• UAM Same format, new alert type
• RCM Same format, new Part C content.
• CR/CZ, CRE/CZE Same format, new GAB content.
• Version number change has caused unexpected
  impact in the past.
• How to treat low core and shallow features?
• Linux platform testing challenge.

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Proposed Schedule Summary(as of 10/02/05)
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Action Items

• _______________________________
• _______________________________
• _______________________________
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