Radar Antenna Array Imaging Concealed Surfaces

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Solution Overview

Problem

Existing imaging technologies, such as metal detectors and x-ray devices, are inadequate for imaging concealed surfaces covered by opaque outer layers due to limitations in detecting non-metallic objects and health hazards associated with x-rays, respectively.

Innovation Solution

A method and system utilizing a two-dimensional array of antennas to generate a radar image of an object at close range, involving the transmission and reception of radio signals, processing of five-dimensional S-parameter signals through Fourier transforms, and mapping to three-dimensional image data for display.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If metal detectors are used to detect concealed objects, then metallic objects can be detected, but non-metallic objects cannot be detected and imaging data is not provided

Engineering Contradiction:

Improvedetection capabilityVSAvoidimaging data

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent replaces traditional metal detector technology with a radar imaging system that uses electromagnetic waves to penetrate opaque materials and generate detailed images. This substitution enables detection of both metallic and non-metallic objects while providing comprehensive imaging data about shape, size, and location.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system changes the detection parameter from metal-specific conductivity detection to electromagnetic wave reflection and transmission properties. By measuring radar signal characteristics (amplitude, phase, time of flight), the system can identify and image any material composition, not just metals, while generating spatial information through signal processing.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If x-ray devices are used to image concealed objects, then detailed imaging is achieved, but health hazards occur and the devices are large and unwieldy

Engineering Contradiction:

Improveimaging detailVSAvoidhealth hazards

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent substitutes harmful x-ray radiation with safe radar electromagnetic waves in the microwave frequency range. These radar waves can penetrate opaque materials and generate detailed images without ionizing radiation, eliminating health hazards while maintaining imaging capability through signal processing techniques.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system changes the electromagnetic radiation type from high-energy ionizing x-rays to lower-energy non-ionizing microwave radar waves. This parameter change maintains the ability to penetrate materials and generate images while eliminating the harmful health effects associated with x-ray radiation.

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If x-ray devices are used for imaging, then detailed images are produced, but the devices are large and unwieldy making them unsuitable for handheld scanners

Engineering Contradiction:

Improveimaging capabilityVSAvoidportability

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The patent replaces large, complex x-ray imaging equipment with a compact radar system that can be integrated into handheld scanners. The radar components are miniaturized and combined with signal processing capabilities, enabling portable operation while maintaining detailed imaging functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The radar imaging system is designed to be multi-functional and adaptable to various scanning applications. The same compact radar unit can be integrated into different scanner configurations (handheld, body scanner, package scanner), providing universal imaging capability across multiple use cases without requiring separate specialized equipment for each application.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enables the generation of detailed radar images of concealed surfaces, overcoming the limitations of traditional imaging technologies, and providing a safe, handheld, and efficient imaging solution for various applications.

Implementation Method 1

each of said transmitting antennas transmitting a radio signal into a target region

Methodology Applied

Scientific EffectElectromagnetic wave propagation: Electromagnetic Induction

Implementation Method 2

each of said receiving antennas receiving a radio signal reflected by an object within the target region

Methodology Applied

Scientific EffectReflection: Reflection

Data Source

PatentUS12292499B2Systems and methods for imaging a concealed surface

Publication Date: 2025.05.06 VAYYAR IMAGING LTD

AI summary

Radar systems and methods for imaging surfaces. A processor receives raw data from the radar and executes an image data generation. A display unit displays an image representing the targeted surface. The radar unit may be incorporated in a handheld scanner. Rectangular antenna arrays may be configured and processors may be operable such that the image data generated may be processed and displayed in real time.