Precursor Penetrating Radar Resolution
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Solution Overview
Problem
Current radar systems face challenges in achieving high resolution and penetration through foliage and buildings due to the absorbing and dispersive effects of media, which are difficult to overcome with conventional antenna designs.
Innovation Solution
The use of precursors and sub-precursors in a coherent radar processing algorithm allows for the development of radar systems that can penetrate various media with high resolution, leveraging the properties of singular vectors and values associated with transmission operators to maintain power budget efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional antenna designs are used, then the antenna size can be kept reasonable, but resolution and penetration through foliage and buildings deteriorate
Solution Approach 1:
The patent changes the fundamental parameters of the radar waveform by using precursor signals with extremely short rise times (sub-nanosecond to picosecond range) and broad bandwidth characteristics. This parameter change allows the system to achieve high resolution and penetration through foliage without requiring proportionally larger antennas, as the resolution is achieved through waveform characteristics rather than antenna dimensions alone
2Measurement precision
If high resolution and penetration are achieved, then resolution improves to inches, but power consumption increases
Solution Approach 1:
The patent converts the harmful absorbing and dispersive effects of foliage into a benefit by using precursor signals that are specifically designed to exploit the transient response characteristics of dielectric media. The precursor signals' extremely short rise times generate broadband frequency content that interacts with the polarizable molecules in foliage, producing detectable secondary precursors that carry resolution information through the media rather than being simply absorbed
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables radar systems to achieve resolution on the order of inches, significantly improving penetration capabilities through foliage and buildings, while maintaining a power budget, by utilizing the unique properties of precursors and sub-precursors in electromagnetic systems.
Implementation Method 1
Precursor based penetrating radar system
Implementation Method 2
the absorbing dispersive effects of foliage make this very difficult
Data Source
AI summary
Various examples are provided related to penetrating radar based upon precursors. In one example, a method includes transmitting a radio frequency (RF) signal; and receiving a return signal associated with the RF signal, where the return signal is a precursor having no exponential decay. The precursor can be one of a sequence of precursors, which can be used to improve resolution of the system. The RF signal can be a short pulse generated by an RF front end, without automatic level control. The return signal can be processed without filtering.