Multi-Source Radar Waveform Target Detection
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Solution Overview
Problem
Existing wireless communication systems face challenges in target detection due to multi-radar interference, where conventional radar waveforms are indistinguishable from interfering sources, leading to ghost targets and increased noise floors.
Innovation Solution
A method and apparatus for wireless communication that utilize multiple radar waveforms, where a first user equipment (UE) receives reflections of its own radar waveform and direct or reflected radar waveforms from a second UE, enabling coherent/matched detection and improved target detection by associating targets from different radar sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional radar waveforms are used for target detection, then the radar system can operate with simple waveform design, but the waveform becomes indistinguishable from interfering sources leading to ghost targets and increased noise floors
Solution Approach 1:
The patent applies parameter changes by modifying radar waveform characteristics such as frequency, modulation type, and temporal structure to create distinguishable waveforms. Each radar source uses different waveform parameters, allowing receivers to differentiate between desired signals and interference, thereby resolving the contradiction between simple waveform design and interference distinguishability
Solution Approach 2:
The patent segments the radar waveform into distinct identifiable components with unique characteristics. By dividing the waveform structure into separable elements with different parameters, the system enables receivers to identify and separate signals from different radar sources, reducing ghost targets and improving measurement precision
2Reliability
If multiple radar waveforms from different sources are received, then additional radio frequency illumination and improved target classification are achieved, but the system complexity increases due to need for coherent detection and waveform association
Solution Approach 1:
The patent implements feedback mechanisms where receiving devices obtain waveform parameter information from transmitting devices and use this feedback to configure their detection processes. This feedback loop enables coherent detection by providing necessary synchronization and parameter matching information, managing system complexity through structured information exchange
Solution Approach 2:
The patent creates a universal detection framework that can process multiple waveform types from different sources using a common coherent detection architecture. The system design allows the same receiver to handle various waveform parameters and sources through standardized processing procedures, reducing overall system complexity despite multi-source operation
3Ease of operation
If conventional single-radar detection is used, then the system operates with simple detection logic, but target classification is limited and noise floors increase due to inability to distinguish interfering sources
Solution Approach 1:
The patent introduces waveform parameter information as an intermediary element that mediates between multiple radar sources and the detection process. This intermediary information enables the system to distinguish between different sources without requiring complex detection logic, maintaining ease of operation while preventing information loss through structured parameter transmission
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 enhances target detection by providing additional radio frequency illumination and improving target classification through the combination of direct and reflected radar signals from multiple sources, effectively mitigating multi-radar interference.
Implementation Method 1
receiving a reflection of a first radar waveform transmitted by the first UE
Implementation Method 2
receiving a second radar waveform from a second UE, wherein the second radar waveform is a direct transmission from the second UE or a reflection of the direct transmission
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may receive a reflection of a first radar waveform transmitted by the first UE. The UE may receive a second radar waveform from a second UE, wherein the second radar waveform is a direct transmission from the second UE or a reflection of the direct transmission. The UE may perform target detection based at least in part on the reflection of the first radar waveform and on the second radar waveform. Numerous other aspects are described.