*Introducing PBSR for Drastic Improvements in Radar Resolution!*

**Telephonics **and **Information Systems Laboratories **are proud to introduce our advanced radar imaging capability, PBSR, which surpasses previous super resolution technique due to it’s underlying physics-based model! See below for a Real-World example of this technique being applied to a real radar system!

**Telephonics**

**Information Systems Laboratories**

*Motivation:*

Traditional radar imaging employing linear Fourier based techniques is subject to fundamental resolution limitations referred to as the Rayleigh or diffraction limit that is on the order of the ratio ** l/d**, where l is the operating wavelength and d is the size (length) of the aperture. For 2D SAR, range resolution is set by the reciprocal of the radar bandwidth, while cross-range is set by the length of the “synthetic” aperture. Both of these fundamental “limits” are in many circles assumed to be unavoidable. This is, of course true

**if linear image formation is assumed. These restrictions do not necessarily hold however if nonlinear imaging is employed.**

*if and only**Our Unique Approach:*

The PBSR approach is fundamentally different than previous superresolution techniques such as Maximim Entropy, MUSIC, ESPRIT and others because it involves an * accurate physics-based assumption* about the underlying received signal as opposed to more general assumptions about the statistics of the signal. This explains why

*(example below) and existing superresolution techniques often fail in real-world settings.*

**we have been able to successfully apply PBSR to real-world airborne radar data**The example shows how PBSR was successfully applied to Telephonics’ radar data to significantly improved the image resolution without increasing the system bandwidth. In this case a test target array of closely-spaced targets arranged in a triangular pattern were successfully resoloved using PBSR!

### Low Resolution Data

### High Resolution Data using PBSR

**PBSR used to achieve imagery with ***greater than 4x improvement in resolution!*

*greater than 4x improvement in resolution!*