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- MATLAB Codes
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- Images for Problem 15.10
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About the Book
Principal Authors:
Fawwaz T. Ulaby
David G. Long,
Contributing Authors:
William Blackwell
Charles Elachi
Adrian Fung
Chris Ruf
Kamal Sarabandi
Jakob van Zyl
Howard Zebker
Language: English
ISBN: 978-0-472-11935-6
Code 16.3: Utility for computing LLS objective function
Code Name: dirmin.m
Description: For a particular wind direction, radar geometry, and σ0 values, the code evaluates LLS using CMOD5.m. Code is designed to be called by a MATLAB minimization routine to support a ravine-search for wind retrieval.
Input Variables: (vectors, one entry for each beam)
| U: | Wind speed to try (m/s) | |
| ϕwind: | Wind direction to try, relative to north (meteorological convention, deg) | |
| ϕradar: | Radar illumination azimuth angle relative to north (deg) | |
| θ: | Incidence angle [15 ≤ θ ≤ 60] (degrees) | |
| σ0: | Observed C-band vv-pol backscatter value (unitless) |
Output Products:
| LLS: | Least-squares objective function |
Book Reference: Chapter 16 Problems
Code: module16_3.m nscat1.txt