+ All Categories
Home > Documents > On board processing - OPB Hot Spots 18 channels Ring Buffer Map Manager Request Interpreter Ground...

On board processing - OPB Hot Spots 18 channels Ring Buffer Map Manager Request Interpreter Ground...

Date post: 02-Jan-2016
Category:
Upload: sharlene-hicks
View: 218 times
Download: 4 times
Share this document with a friend
5
On board processing - OPB Hot Spots 18 channels Ring Buffe r Map Manager Request Interpre ter Ground Statio n Relatio nal Databas e (SQLite ) Preproc essing Algorith ms Georectif y Post process ing Request er FRP Normaliz ed Differen ce <= 5 channels
Transcript
Page 1: On board processing - OPB Hot Spots 18 channels Ring Buffer Map Manager Request Interpreter Ground Station Relational Database (SQLite) Preprocess ing.

On board processing - OPB

Hot Spots

18 channels

RingBuffer

Map Manager

RequestInterpreter

GroundStation

RelationalDatabase(SQLite)

Preprocessing

Algorithms

Georectify

Post processing

Requester

FRP

NormalizedDifference

<= 5 channels

Page 2: On board processing - OPB Hot Spots 18 channels Ring Buffer Map Manager Request Interpreter Ground Station Relational Database (SQLite) Preprocess ing.

Pre-processing/Product Relationships

DC Radiance

Reflectance

Temp. Hot Spots.

ScaledVisualProduct.

FRP

NormalizedDifference

Multi-ClassShapefile

Raw data

Intermediate

DerivedOutput

“Real”Output

Page 3: On board processing - OPB Hot Spots 18 channels Ring Buffer Map Manager Request Interpreter Ground Station Relational Database (SQLite) Preprocess ing.

Improvements

• Increase automation – ground station front end

• Addition of a relational database - currently used to set-up requests for known targets and log requests sent.

• Variable buffer size – trade off between responsiveness and histogram variation

• “Science” products – FRP, Normalized Difference

Page 4: On board processing - OPB Hot Spots 18 channels Ring Buffer Map Manager Request Interpreter Ground Station Relational Database (SQLite) Preprocess ing.

Real time georectification

Good relative with properboresighting.

Elevation change and importance of a good DEM

Page 5: On board processing - OPB Hot Spots 18 channels Ring Buffer Map Manager Request Interpreter Ground Station Relational Database (SQLite) Preprocess ing.

Adding Algorithms

• Designed with this in mind – fairly easy but does require recompilation

• Database (somewhat spatial), meta-data, simple thresholding, normalized differences

• Would lend itself well to unsupervised clustering algorithms

• Processing time for “real time” turnaround varies with scanrate and buffer size selected. At a scanrate of 11sps, there 1.8 min., to 54sec. of processing time for 1200 and 600 line buffer respectively.


Recommended