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Tropospheric Effects on Angle-of-Arrival

Tropospheric Effects on Angle-of-Arrival

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In this chapter, we characterize the effects of angle bias due to refraction and angle precision due to turbulence. As a result, angle bias due to refraction can be calibrated and removed, if possible, and any residual error can be quantified in the interferometer angle error budget. Also, the effects of angle precision due to turbulence can be determined and accounted for in the same angle error budget. For turbulence it will be important to understand the spatial correlation of errors that will determine the magnitude of the impact of turbulence effects on angle precision for an interferometer.

Chapter Contents:

  • 10.1 Tropospheric Refraction Effects
  • 10.1.1 Geometric Optics (Ray Tracing)
  • 10.1.2 Ray Tracing Adjoint Operator
  • 10.2 Tropospheric Turbulence Effects
  • 10.2.1 Basic Theory for RF Turbulence
  • 10.2.2 Turbulence-Induced Radar Effects
  • 10.2.3 Turbulence-Induced Radar Scintillation
  • 10.2.4 Radar Beam Fluctuation at the Target
  • 10.2.5 Space-to-Ground Turbulence Analysis
  • References

Inspec keywords: tropospheric electromagnetic wave propagation; direction-of-arrival estimation; refraction

Other keywords: angle precision; angle bias; tropospheric effects; refraction; spatial correlation; residual error; turbulence effects; interferometer angle error budget; angle-of-arrival

Subjects: Signal processing and detection; Radiowave propagation

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