Electromagnetic vector sensor array angle estimation method based on double quaternions
A sensor array, angle estimation technology, applied in radio wave measurement systems, direction-determining directional devices, radio wave direction/bias determination systems, etc.
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[0126] In order to verify the feasibility of the present invention, carry out following experiment respectively:
[0127] Simulation experiment 1: In order to estimate the azimuth and elevation angles at the same time, the experiment uses an L-shaped polarization-sensitive array with 10 elements, that is, 5 three-orthogonal electric dipole array elements are placed on the x-axis and y-axis respectively. The element spacing is taken as half a wavelength. The time domain BQ-MUSIC algorithm proposed in this paper is compared with the LV-MUSIC algorithm. Assuming that there are two independent and incoherent sources in the space, they are incident on the array from the far field in different directions, and the incident angle is For the convenience of comparison, the same polarization parameters (γ, η)=(50°, 30°) are set for the two sources. In an incoherent noise environment with a signal-to-noise ratio of 5dB, set the number of snapshots to 512, figure 1 and figure 2 are t...
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