A MUSIC method for radar that measures the angle of arrival by using a scanning beam radar
✍ Scribed by Fuyuki Fukushima; Atsushi Okamura; Toshiyuki Hirai
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 432 KB
- Volume
- 89
- Category
- Article
- ISSN
- 8756-6621
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✦ Synopsis
MUSIC superresolution algorithm can estimate the DOAs (directions of arrival) of multiple waves closing less than the beam width. However, the MUSIC algorithm is usually applied to a DBF (digital beam forming) array antenna, and it was difficult to apply the method to scanning beam radar, which has simpler structure and lower cost than DBF radar. This paper proposes a MUSIC DOA estimation algorithm intended to improve DOA estimation performance by separating mixed signals in a scanning beam radar. In this paper, we assume a scanning beam radar transmitting and receiving FMCW modulated waves, which are often used for modulation. The principle of the proposed method is described. The accuracy and resolution of DOA estimation by the proposed estimation method are evaluated by computer simulation, and it is verified that a resolution 5 times as great as that of the conventional method can be achieved.