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Sensitivity of Line-of-Sight Estimation to Measurement Errors in L-Shaped Antenna Arrays for 3D Localization for
Botond Sándor Kirei1, Vlad Rațiu1, Ovidiu Rațiu2
1Basis of Electronics Department, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania.
Measurement errors in L-shaped antenna arrays impact 3D localization accuracy for inter-satellite links. Antenna placement variations significantly affect line-of-sight estimation, especially with range and phase measurement errors.
Area of Science:
- Aerospace Engineering
- Signal Processing
- Geomatics Engineering
Background:
- Accurate 3D localization is critical for next-generation inter-satellite links.
- Understanding measurement error sensitivity in antenna arrays is essential for system performance.
Purpose of the Study:
- To perform a sensitivity analysis of line-of-sight estimation to measurement errors in an L-shaped antenna array.
- To investigate the impact of antenna placement variations on 3D positioning precision.
Main Methods:
- Developed a 3D localization model in a Cartesian coordinate system with the L-shaped antenna array at the origin.
- Utilized range measurements and line-of-sight angles with the x- and y-axes for localization.
- Conducted a sensitivity analysis to assess the effects of geometric variations and measurement errors.
Main Results:
- Antenna placement variations in the L-shaped array impact 3D positioning precision.
- Misplaced antennas closer than intended increase line-of-sight error with range measurement errors at small distances.
- Misplaced antennas increase line-of-sight error with phase measurement errors at large distances.
Conclusions:
- Sensitivity analysis provides deeper understanding of measurement error effects on 3D localization systems.
- Antenna geometry variations are a critical factor influencing localization accuracy in inter-satellite link systems.
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