Networked SDR Linking for RF Spectrum Coverage
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Solution Overview
Problem
Software-defined radios (SDRs) have limitations in receiving and processing Radio Frequency (RF) spectrum, requiring multiple units with overlapping frequency ranges for military and civilian applications, but assembling these into a single large system is impractical for quick deployment and inefficient resource utilization.
Innovation Solution
A networked system of SDRs, such as Wide Band Transcorders, is configured to operate as a single, scalable RF signal recording and playback system, allowing up to 128 SDRs to be linked for coordinated tasks like monitoring, recording, and simulating RF environments, with AI-assisted signal detection and classification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple SDRs are assembled into a single large rack-mounted system, then RF spectrum coverage is improved, but deployment speed and system flexibility deteriorate
Solution Approach 1:
The system divides the large rack-mounted SDR configuration into multiple independent, dismounted SDR units that can be deployed separately. Each unit operates autonomously but can be coordinated through network linking to achieve comprehensive RF spectrum coverage, thereby maintaining coverage capabilities while significantly improving deployment speed and flexibility.
Solution Approach 2:
The invention transitions from a single-location rack-mounted configuration to a distributed spatial arrangement where multiple SDR units can be positioned at different locations. This dimensional change allows the system to maintain aggregate RF coverage while enabling rapid deployment and flexible reconfiguration across multiple geographic points.
2Quantity of substance
If multiple SDRs are assembled into a single large system, then RF spectrum coverage is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The system implements dynamic resource allocation where SDR units can be individually activated or deactivated based on real-time mission requirements. This dynamic configuration allows optimal resource utilization by deploying only the necessary number of units for each specific task, rather than permanently operating a large fixed system.
Solution Approach 2:
Each SDR unit is designed with universal capabilities to perform multiple functions independently. This multi-functionality allows individual units to be flexibly allocated to different tasks as needed, improving overall resource utilization efficiency while maintaining the ability to achieve comprehensive RF spectrum coverage when units are coordinated.
3Quantity of substance
If multiple SDRs are assembled into a single large system, then RF spectrum coverage is improved, but logistical convenience deteriorates
Solution Approach 1:
The system segments the large SDR configuration into multiple small, standardized units that are logistically easier to handle, transport, and deploy. Each unit can be independently managed and configured, significantly improving logistical convenience while maintaining comprehensive RF spectrum coverage through network coordination.
Solution Approach 2:
Each SDR unit is equipped with autonomous capabilities including self-configuration and self-diagnosis, reducing the logistical burden of manual setup and maintenance. This self-service capability allows units to be rapidly deployed and operated with minimal logistical support while maintaining aggregate RF coverage.
Data Source
AI summary
The disclosed invention includes methods for linking individual software-defined radios (SDR) into a cohesive network of SDRs capable of recording a sample of radiofrequency (RF) signals emitted in an RF environment. Individual SDRs communicate with an IP network, and host a linking application that executes the recording. A user identifies a lead SDR from among the SDRs, and uses the lead SDR to task participating SDRs with reference to a clock source. Also disclosed is a system of SDRs configured to be linked into a cohesive network of SDRs capable of recording a sample of RF signals emitted in an RF environment. Embodiments of the disclosed invention include co-located and dispersed SDRs. Some embodiments use SDRs organized into a mesh network. Embodiments of the disclosed invention are configured to perform total band monitoring, total band capture, RF environment simulation, interference identification, interference simulation, and distributed quality of service evaluation of wireless networks.