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Volume 32 Issue 1
Aug.  2010
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Peng Wei, Wang Xue-gang, Tang Bin, Wu Hong-gang. A Method of Relative Delay Measurement for the Wideband Digital Array Radar Based on Dechirping Technique[J]. Journal of Electronics & Information Technology, 2010, 32(1): 32-27. doi: 10.3724/SP.J.1146.2008.01594
Citation: Peng Wei, Wang Xue-gang, Tang Bin, Wu Hong-gang. A Method of Relative Delay Measurement for the Wideband Digital Array Radar Based on Dechirping Technique[J]. Journal of Electronics & Information Technology, 2010, 32(1): 32-27. doi: 10.3724/SP.J.1146.2008.01594

A Method of Relative Delay Measurement for the Wideband Digital Array Radar Based on Dechirping Technique

doi: 10.3724/SP.J.1146.2008.01594
  • Received Date: 2008-12-01
  • Rev Recd Date: 2009-05-11
  • Publish Date: 2010-01-19
  • In this paper, based on the Dechirping technique, a new method of measuring relative delays among digital T/R modules for the wideband digital array utilizing wideband LFM pulses is proposed. To enhance radar systems flexibility and extensibility and reduce hardware costs, this method can be realized by software. By using the decimation and FFT algorithm, not only can the measurement method be easier to be implemented for computational efficiency and reduce data rate, but also good measurement precision and real-time performance are achieved, at the same time, all relative delays among multiple digital T/R modules are enabled to be acquired in one measurement process. The performance of the proposed method is analyzed from the theoretical angle and thus some optimal system parameters are determined. The simulation results show the effectiveness and efficiency of the proposed method.
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