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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yilin Wang Xiaoxue Wang Ping Cai |
| Copyright Year | 2010 |
| Description | Author affiliation: Department of Underwater Acoustic Engineering, Underwater Acoustic Technology Key Lab of Science and Technology for National Defense, Harbin, Heilongjiang Province, China (Yilin Wang; Xiaoxue Wang; Ping Cai) |
| Abstract | As an important kind of non-stationary signals, the linear frequency modulation signals have been widely used in underwater acoustic communication systems and signal detection systems. The fractional Fourier transform is an effective transform manner to analyse non-stationary signals especially to detect linear frequency modulation signals. The time measurement manner can be changed into frequency measurement manner by employing fractional Fourier transform to detect linear frequency signals. In the receiver, we acquire time domain data of transmitted signal by measuring u-domain peak position of detected signal. Then we can find the beginning of transmitted signal. To enhance the time measurement precision of this manner, we truncate some points of transmitted signal in the transmitter to make the u-domain peak position shift susceptive. This paper mainly simulates target trajectory tracking under underwater acoustic condition. We overlap several truncated linear frequency modulation signals to transmit. Using the fractional Fourier transform to detect linear frequency modulation signals, to acquire the time delay between targets and transducer arrays. Target bearing is resolved by hyperboloid intersection algorithm to track trajectory of the target. |
| Starting Page | 436 |
| Ending Page | 439 |
| File Size | 125926 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424457014 |
| e-ISBN | 9781424457045 |
| DOI | 10.1109/ICINFA.2010.5512375 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-06-20 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Fourier transforms Target tracking fractional Fourier transform Underwater tracking Acoustic signal detection Time measurement hyperboloid intersection algorithm Chirp modulation target trajectory tracking Trajectory Underwater acoustics Signal analysis Signal detection |
| Content Type | Text |
| Resource Type | Article |
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