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IF Estimation of FM Signals Based on Time-Frequency Image

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This paper addresses the problem of estimating instantaneous frequency (IF) of multicomponent radar signals which are assumed to be frequency-modulated (FM). The difficulties lie in that different FM components which overlap in time-frequency (TF) domain have different time-supports, and their spectral contents may present continuous and stepped IF laws. We propose an IF estimation algorithm by exploiting the combination of TF distributions and image processing techniques. Numerical results are provided to demonstrate desirable capabilities of the proposed algorithm. 

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Haijian Zhang

Field of Interest

“The field of interest shall be the organization, systems engineering, design, development, integration, and operation of complex systems for space, air, ocean, or ground environments. These systems include but are not limited to navigation, avionics, mobile electric power and electronics, radar, sonar, telemetry, military, law-enforcement, automatic test, simulators, and command and control."

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