However, in an actual array system, there will have imperfect errors including element position errors, mutual coupling, phase errors, and frequency increment errors [21-24] [21-24]
Nowadays I feel complicit in the whole mess, sorry for our mutual, human error.
Mutual alignment errors include pointing and tracking errors which depend on transmitting and receiving optical system, respectively.
Instead of Zernike polynomials, truncated Gaussian function is proposed to express localized wave-front deformation in studying mutual alignment errors in free-space laser communication links, which simplifies the calculation.
Since FDA beampattern has similar properties with conventional phased array for the impacts of element position errors, mutual coupling, and phase errors, this paper considers only the impacts of frequency increment errors on FDA beampattern.
It addresses the mutual information, the error probability, and the code design.
Some results have been reported about the impacts of element position error, mutual coupling and phase error on beampattern, and direction-of-arrival (DOA) estimation performances.
The quality of a force field's performance inherently relies on the mutual compensation of errors, which in turn depends on a balance between forces in the system under study and the accuracy of the parametrization.
However, because of the received noise, mutual coupling or system error, different direction finding results will be obtained when using different phase difference pairs.
It can reduce the effect from mutual coupling and system error through comparison between measured phase difference vector and phase difference vectors in sample database[7, 8].
