An Efficient ISAR Imaging Deception Jamming Method of Chirp Modulation Signal

2020 ◽  
Author(s):  
Yanwei Zhao ◽  
Yunfo Liu ◽  
Bin Li ◽  
Xiaoyuan Ma ◽  
Wenshu Wei
Keyword(s):  
Chirp Modulation ◽  
Isar Imaging ◽  
Modulation Signal

Electro-Optic Modulator for Compensation of Third-Order Intermodulation Distortion Using Frequency Chirp Modulation

2020 ◽  
Vol E103.C (11) ◽  
pp. 653-660
Author(s):  
Daichi FURUBAYASHI ◽  
Yuta KASHIWAGI ◽  
Takanori SATO ◽  
Tadashi KAWAI ◽  
Akira ENOKIHARA ◽  
...  
Keyword(s):  
Intermodulation Distortion ◽  
Frequency Chirp ◽  
Third Order ◽  
Chirp Modulation ◽  
Electro Optic ◽  
Electro Optic Modulator

Low Chirp Modulation by Electro-Optic Intensity Modulator Using Microwave 180-Degree Hybrid Directly Formed on LiNbO3 Substrate

2015 ◽  
Vol E98.C (8) ◽  
pp. 777-782 ◽  
Author(s):  
Akira ENOKIHARA ◽  
Masashi YAMAMOTO ◽  
Tadashi KAWAI ◽  
Tetsuya KAWANISHI
Keyword(s):  
Intensity Modulator ◽  
Chirp Modulation ◽  
Electro Optic

Weighted Minimum Entropy Autofocus Algorithm for ISAR Imaging

2011 ◽  
Vol 33 (8) ◽  
pp. 1809-1815
Author(s):  
Gang Xu ◽  
Lei Yang ◽  
Lei Zhang ◽  
Ya-chao Li ◽  
Meng-dao Xing
Keyword(s):  
Minimum Entropy ◽  
Isar Imaging ◽  
Autofocus Algorithm

Analysis on the Effect of Nonequivalent Relationship between Space and Time in MIMO-ISAR Imaging

2014 ◽  
Vol 35 (8) ◽  
pp. 1806-1812
Author(s):  
Gang Chen ◽  
Hong Gu ◽  
Wei-min Su ◽  
Hua Shao
Keyword(s):  
Space And Time ◽  
Isar Imaging

Improvement of Carrier Power to Third-Order Intermodulation Distortion Power Ratio for a Power Amplifier at 5.25 GHz using LINC Method

2018 ◽  
Vol 12 (1) ◽  
pp. 34-40
Author(s):  
Said Elkhaldi ◽  
Naima Amar Touhami ◽  
Mohamed Aghoutane ◽  
Taj-eddin Elhamadi
Keyword(s):  
Power Amplifier ◽  
Artificial Neural Network Model ◽  
Power Ratio ◽  
Linear Amplification ◽  
Third Order ◽  
Gaas Mesfet ◽  
Constant Envelope ◽  
Modulation Signal ◽  
Low Efficiency ◽  
Nonlinear Components

Introduction:This paper focuses on improving the power amplifier linearity for wireless communications. The use of a single branch of a power amplifier can produce high distortion with low efficiency.Method:In this paper, the Linear Amplification with Nonlinear Components (LINC) technique is used to improve the linearity and efficiency of the power amplifier. The LINC technique is based on converting the envelope modulation signal into two constant envelope phase-modulated baseband signals. After amplification and combining the resulting signals, the required linear output signal is obtained. To validate the proposed approach, LINC technique is used for linearizing an amplifier based on a GaAs MESFET (described by an artificial neural network Model).Conclusion:Good results have been achieved, and an improvement of about 40.80 dBc and 47.50 dBc respectively is obtained for the Δlower C/I and Δupper C/I at 5.25 GHz.

scholarly journals Fault detection for planetary gearbox based on an enhanced average filter and modulation signal bispectrum analysis

2020 ◽  
Vol 101 ◽  
pp. 408-420 ◽  
Author(s):  
Junchao Guo ◽  
Dong Zhen ◽  
Haiyang Li ◽  
Zhanqun Shi ◽  
Fengshou Gu ◽  
...  
Keyword(s):  
Fault Detection ◽  
Planetary Gearbox ◽  
Modulation Signal ◽  
Average Filter

Preserving Unique Structural Blocks of Targets in ISAR Imaging by Pitman–Yor Process

2021 ◽  
Vol 21 (2) ◽  
pp. 1859-1876
Author(s):  
Di Cheng ◽  
Bo Yuan ◽  
Yulong Dai ◽  
Chang Chen ◽  
Weidong Chen
Keyword(s):  
Isar Imaging ◽  
Structural Blocks
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