Performance evaluation of the frequency-domain DORT imaging method with UWB radar for a finite-sized target

2011 ◽  
Author(s):  
Takuya Sakamoto ◽  
Toru Sato
Keyword(s):  
Performance Evaluation ◽  
Frequency Domain ◽  
Imaging Method ◽  
Uwb Radar

Accurate Imaging Method for Moving Target with Arbitrary Shape for Multi-Static UWB Radar

2013 ◽  
Vol E96.B (7) ◽  
pp. 2014-2023 ◽  
Author(s):  
Ryo YAMAGUCHI ◽  
Shouhei KIDERA ◽  
Tetsuo KIRIMOTO
Keyword(s):  
Arbitrary Shape ◽  
Imaging Method ◽  
Moving Target ◽  
Uwb Radar ◽  
Accurate Imaging

scholarly journals Implementation and Performance Evaluation of the Frequency-Domain-Based Bit Flipping Controller for Stabilizing the Single-Bit High-Order Interpolative Sigma Delta Modulators

2020 ◽  
Vol 10 (17) ◽  
pp. 5785
Author(s):  
Huishan Zhai ◽  
Bingo Wing-Kuen Ling
Keyword(s):  
Performance Evaluation ◽  
Frequency Domain ◽  
Control Strategy ◽  
Input Sequence ◽  
Logic Gates ◽  
High Order ◽  
Integer Programming Problem ◽  
Sigma Delta Modulator ◽  
Sigma Delta ◽  
Resonance Frequencies

This paper is an extension of the existing works on the frequency-domain-based bit flipping control strategy for stabilizing the single-bit high-order interpolative sigma delta modulator. In particular, this paper proposes the implementation and performs the performance evaluation of the control strategy. For the implementation, a frequency detector is used to detect the resonance frequencies of the input sequence of the sigma delta modulator. Then, a neural-network-based controller is used for finding the solution of the integer programming problem. Finally, the buffers and the combinational logic gates as well as an inverter are used for implementing the proposed control strategy. For the performance evaluation, the stability region in terms of the input dynamical range is evaluated. It is found that the control strategy can significantly increase the input dynamical range from 0.24 to 0.58. Besides, the control strategy can be applied to a wider class of the input signals compared to the clipping method.

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