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Content Provider | IET Digital Library |
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Author | Wang, Wen Qin |
Abstract | By jointly utilising the advantages of cognitive radar with situational awareness due to closed-loop control and frequency diverse array (FDA) with range-angle-dependent beampattern, this study proposes a cognitive FDA radar with situational awareness. Different from conventional phased-array, FDA offers a range-dependent beampattern. The proposed cognitive FDA radar can avoid undesired strong interferences and focus to the desired targets through the presented closed-loop control algorithm. This algorithm aims to maximise the receiver output signal-to-interference-plus-noise ratio (SINR) performance by iteratively optimising the frequency increment in a closed-loop manner. That is, the cognitive FDA radar can adaptively change its frequency increment according to the environment and thus better performance can be obtained. The cognitive FDA radar performance is evaluated by examining the SINR and direction-of-arrival (DOA) estimation mean square errors. How the performance depends on the FDA frequency increment is also investigated. Simulation results show that the cognitive FDA radar yields much better SINR performance and thus higher DOA estimation precision than basic FDA and conventional phased-array radars. |
Starting Page | 359 |
Ending Page | 369 |
Page Count | 11 |
ISSN | 17518784 |
Volume Number | 10 |
e-ISSN | 17518792 |
Issue Number | Issue 2, Feb (2016) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rsn/10/2 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2015.0211 |
Journal | IET Radar, Sonar & Navigation |
Publisher Date | 2016-02-01 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Closed-loop Control Algorithm Closed-loop Control System Closed-loop Manner Cognitive FDA Radar Cognitive Frequency Diverse Array Radar Conventional Phased Array Conventional Phased-array Radars Direction of Arrival Estimation Direction-of-arrival Estimation Mean Square Error DOA Estimation Mean Square Error Electromagnetic Compatibility Frequency Increment Interference Interpolation And Function Approximation Mean Square Error Method Numerical Analysis Phased Array Radar Radar Equipment Radar Interference Radar Signal Processing Range Angle Dependent Beampattern Range Dependent Beampattern Signal Processing And Detection Signal-to-interference-plus-noise Ratio SINR Situational Awareness System And Application |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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