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Compact cross form antenna arrays intended for wideband two dimensional interferometric direction finding including the channel phase tracking error

Mollai, S ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1016/j.aeue.2017.10.030
  3. Publisher: Elsevier GmbH , 2018
  4. Abstract:
  5. The interferometer method as one of the most accurate schemes for wideband direction finding (DF) is used. The interferometer method has various algorithms which can be implemented depending on the required specifications. The advantages and disadvantages of these algorithms have been evaluated and the appropriate algorithm for a general practical case in view of the ambiguity resolution is proposed. The receivers’ channel phase tracking error is of significant concern in practice in interferometric DF systems. The induced error due to channels phase tracking error is estimated. Furthermore the use of physically realizable antennas, achievement of high accuracy, minimum number of antennas and consequently receivers and wideband DF is considered. The interferometric algorithms including Common Angle Search (CAS), Second Order Difference Array (SODA) and SODA-Based Inference (SBI) methods are compared for a linear array and the CAS method is selected as the appropriate algorithm. An optimized two dimensional cross form antenna array is devised by two orthogonal linear arrays. A cubic set for full coverage, has been proposed as the implementation of two dimensional wideband direction finding system with 360° azimuth and ±45° elevation coverage, and its resolution in presence of additive noise and the channel phase tracking error is evaluated. © 2017 Elsevier GmbH
  6. Keywords:
  7. Additive noise ; Antennas ; Errors ; Inference engines ; Interferometers ; Interferometry ; Ambiguity resolution ; Direction finding ; High-accuracy ; Interferometer method ; Interferometric algorithms ; Phase tracking ; Second order difference arrays ; Wide-band direction findings ; Antenna arrays
  8. Source: AEU - International Journal of Electronics and Communications ; Volume 83 , 2018 , Pages 558-565 ; 14348411 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S1434841117316047