Constraints and Estimation of Hyperbolic Linear Frequency Modulation Signal Parameters
LV Jinhua
WU Haoran
ZHANG Sen
ZHONG Heping
Abstract：Hyperbolic linear frequency modulation signal has the most doppler tolerance in all of the sonar signal so far , but there is little thorough research on the signal .This paper studies the pre envelope expression of the HFM signal and the complex envelope expression ,and builds contact the expressions with the center frequency ,bandwidth and pulse width of the signal .These connections is conducive to generate the waveforms and evaluate the performance of HFM signal of sonar .Fi‐nally ,the paper compares the performance of ambiguity function of the wideband HFM and LFM signal under the conditions of the common parameters of active sonar .The results show that HFM and LFM signal have the similar performance ,but the time and frequency resolution of LFM signal decrease slightly .
Keywords：HFMLFMambiguity functiondoppler tolerance
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 63-66,87 )