Number & DOA of Coherent Signals Determination by Eigenvector Matrix Operation
A New Method for Estimating the Direction-of-Arrival and Determining the Numbers of Coherent Impinging Signals
(Sprache: Englisch)
The research of signal parameter estimation using antenna array have been extensively attended for decades. In array processing, the estimation of DOA( Direction of Arrival ) or the determination of number of signals plays an important role in many...
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The research of signal parameter estimation using antenna array have been extensively attended for decades. In array processing, the estimation of DOA( Direction of Arrival ) or the determination of number of signals plays an important role in many applications such as in sonar, radar, and seismic measurement.However, the concept of most known algorithms is assuming the signals are uncorrelated. In practice, the transmitting signals are usually reflected or refracted by mountains, buildings or other impediments. It will cause multi-path propagation as highly correlated or coherent signals are received on the sensor.Therefore, rank deficiency of signal covariance matrix will be raised.It will cause the usual eigenvalue-detecting method going failed.In this book, we propose a new method for the rank deficient issue. For avoiding the confusion caused by the unknown length of subarray, we use some operations of the eigenvector matrix to form a new matrix. Besides, we can find out thenumber of signals by counting the non-zero eigenvalues of the covariance matrix of this new matrix. Furthermore, we also can categorize the coherent signals into different groups for their coherence.
Autoren-Porträt von Nelson Wu, Yuh-Huu Chang
Wu, NelsonYu-Ning Wu(Nelson Wu), who comes from Taipei, Taiwan. After graduated from HSNU high school and department of electronic engineering of CYCU, he was studying array processing with Professor Yuh-huu Chang in graduate school of CYCU in Taiwan. Now he is a hard-working engineer.
Bibliographische Angaben
- Autoren: Nelson Wu , Yuh-Huu Chang
- 2008, 68 Seiten, Maße: 15 x 22 cm, Kartoniert (TB), Englisch
- Verlag: VDM Verlag Dr. Müller e.K.
- ISBN-10: 3639000323
- ISBN-13: 9783639000320
Sprache:
Englisch
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