Wireless Scatterer Localization Through Reflection Loss Analysis
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Solution Overview
Problem
Conventional methods for material identification and localization, such as haptic-based methods, require direct contact with objects and are ineffective at significant distances, limiting their applicability in emerging use cases like robotic perception and VR applications.
Innovation Solution
A method utilizing wireless signal reflection loss to identify material and locate objects from a distance, involving a transmission apparatus to send a wireless signal, a reception apparatus to receive and process signal information, and an identification apparatus to determine material and position based on reflection loss, angle of departure, and time of flight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If haptic-based methods are used for material identification, then material properties can be determined through direct contact, but the method cannot identify material of objects at significant distances
Solution Approach 1:
The patent replaces mechanical haptic contact systems with electromagnetic wave-based detection. The wireless communication system transmits signals that reflect off objects, and material properties are identified through analysis of reflection loss characteristics rather than physical contact. This substitution enables distance-based material identification while maintaining measurement capability.
Solution Approach 2:
The patent introduces wireless signals as an intermediary between the detection system and the object. Instead of direct mechanical contact, the system uses transmitted wireless signals that interact with the object's material properties and return reflected signals to the receiver. This intermediary enables indirect material identification from a distance through reflection loss analysis.
2Measurement precision
If dedicated haptic sensors are used for material detection, then material properties can be identified through pressing and sliding interactions, but direct contact conditions are hard to achieve in practical applications
Solution Approach 1:
The patent replaces mechanical haptic sensors and pressing/sliding interactions with wireless signal transmission and reflection analysis. The system determines material properties by analyzing reflection loss of wireless signals rather than requiring physical contact through haptic sensors, thereby eliminating the need for direct contact conditions while maintaining material identification capability.
Solution Approach 2:
The patent enables the wireless communication system to perform dual functions: standard wireless communication and material identification through reflection loss analysis. This multi-functionality allows the same system to operate in both communication mode and sensing mode, providing operational flexibility without requiring dedicated haptic sensing hardware.
3Adaptability or versatility
If conventional cellular networks are used, then wireless communication can be established, but scatterer localization capability is not available
Solution Approach 1:
The patent extends conventional cellular network functionality to include scatterer localization capability. By analyzing reflection loss and signal characteristics in existing wireless communications, the system enables both communication and localization functions without requiring separate dedicated systems, thereby achieving multi-functionality while maintaining compatibility with existing infrastructure.
Solution Approach 2:
The patent implements feedback mechanisms where reflected signals from scatterers are analyzed to determine location and material properties. The system uses the reflected wireless signals as feedback information to infer scatterer characteristics, enabling localization and material identification through passive analysis of return signals rather than active sensing.
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 material identification and localization of objects from a significant distance without requiring close interaction, enhancing applications in robotic perception and VR by providing accurate material and position data.
Implementation Method 1
determining a reflection loss of a power of a wireless signal caused by a reflection at an object
Data Source
AI summary
Embodiments of the present disclosure provide methods and apparatus for scatterer localization and material identification. The method performed by an identification apparatus may comprise: determining (S101) a reflection loss of a power of a wireless signal caused by a reflection at an object, for the purpose of identifying a material of the object and localizing a position of the object. The method performed by a reception apparatus may comprise: receiving (S201) a wireless signal transmitted from a transmission apparatus and reflected by an object; and transmitting (S202), to an identification apparatus, information about the wireless signal. The method performed by a transmission apparatus may comprise: receiving (S301) an indication for identifying a material of an object; and transmitting (S302) a wireless signal reflected by the object to a reception apparatus.