Non-Cooperative Target Imaging and Parameter Estimation with Narrowband Radar Echoes

Area of Science:

• Radar Systems Engineering
• Signal Processing
• Target Recognition

Background:

• Radar target recognition is crucial for defense and surveillance.
• Accurate imaging of rotating targets with narrowband radar echoes remains a challenge.

Purpose of the Study:

• To develop a novel approach for rotating target imaging and parameter estimation using narrowband radar echoes.
• To enhance radar target recognition capabilities.

Main Methods:

• Established a two-dimensional (2D) imaging model for narrowband echoes.
• Formed target images on the velocity-acceleration plane across two coherent processing intervals (CPIs).
• Estimated rotating velocity (RV) based on scattering center positions in sequential images.

Main Results:

• Successfully estimated the rotating velocity (RV) of targets.
• Rescaled the target image to the range-cross-range plane using the estimated RV.
• Validated the proposed approach through numerical simulations.

Conclusions:

• The proposed method effectively images rotating targets and estimates key parameters from narrowband radar echoes.
• This technique significantly advances radar target recognition accuracy.