Method for detecting and tracking low-observable target with boost-to-glide trajectory under condition of ambiguous slant range

A method for detecting and tracking a low-observable target with a boost-to-glide trajectory under a condition of slant range ambiguity, wherein the method comprises:

• S1:
• configuring an alternating pulse repetition frequency model for radar ranging:
• S1.1:
• measuring an ambiguous slant range of the target by alternately transforming a pulse repetition frequency;
• and
• S1.2:
• restoring a true range of the target;
• S2:
• defining an extended non-coherent accumulation model in a distance-time plane for target detection:
• S2.1:
• defining the extended non-coherent accumulation model;
• S2.2:
• selecting the distance-time plane;
• S2.3:
• extending a non-coherent accumulation detection mode based on distance-time Hough transform;
• and
• S2.4:
• detecting the low-observable target;
• and
• S3:
• configuring an S-type recursive energy tracking model for target tracking:
• S3.1:
• configuring an S-type motion model;
• and
• S3.2:
• designing a recursive energy filter, conducting update by recursive energy to keep target tracking at a high signal-to-noise ratio, and obtaining a target trajectory by using a filter algorithm.