| Autor: |
Zibo ZHOU, Chaowei ZHANG, Saiqiang XIA, Daoming XU, Yan GAO, Xiaoshuang ZENG |
| Jazyk: |
English<br />Chinese |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Leida xuebao, Vol 10, Iss 6, Pp 929-943 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2095-283X |
| DOI: |
10.12000/JR21132 |
| Popis: |
As a stable and widely covered signal resource, a Global Navigation Satellite System (GNSS) plays an important part in micro-Doppler extraction in a near field. This paper aims at the problems associated with rotor blade target recognition and proposes a novel solution based on phase compensation. First, the mathematical mechanism of flicker distribution in a time-frequency field is analyzed, and phase compensation is used to achieve the Doppler focusing, and then the blade number can be estimated. Second, according to the that the minimum delta frequency principle between the center frequency and standard frequency, the rotation velocity of the rotor blade is obtained. Next, blade lengths can be calculated through the flicker bandwidth in the time-frequency domain. Finally, the simulation experiments validate the effectiveness of the proposed method. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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