Systems Engineering and Electronics ›› 2023, Vol. 45 ›› Issue (1): 15-24.doi: 10.12305/j.issn.1001-506X.2023.01.03

• Electronic Technology • Previous Articles    

Position error analysis of FDA elements via interval algorithm

Hu TANG, Guanghui ZENG, Yi LIAO, Wenqin WANG   

  1. School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
  • Received:2021-11-05 Online:2023-01-01 Published:2023-01-03
  • Contact: Yi LIAO

Abstract:

Frequency diverse array (FDA) can generate range-angle dependent beampattern by introducing a small frequency offset to the transmit fundamental frequency of each array element, which enables more flexibility in information signal processing. However, most of the existing research on FDA assume that the array element position is ideal with no error. In practice, position error is unavoidable in manufacturing process, which will inevitably cause the actual performance deviation from the theoretical design performance indicators, while current literature seldom include the analysis of the position error of FDA. Therefore, it is urgent to find a method to analyze the position error of FDA. In this paper, a new method based on the interval analysis (IA) algorithm is proposed to analyze the influence of the position error of each element on the FDA beam performance. The method firstly assumes that the position error of each element is in a certain known interval, and then through a series of numerical calculations, the upper and lower bounds of the effect of the error on the beam performance can be obtained. Finally, the effectiveness of this method is verified by simulation experiments.

Key words: frequency diverse array (FDA), position errors, interval analysis (IA) algorithm, transmit beampattern

CLC Number: 

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