Decentralized Jamming Control for Military Communications

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Solution Overview

Problem

Current methods for controlling fratricidal effects in telecommunications networks, particularly in joint use scenarios with jammers, lack precision and flexibility, often limiting the range and number of simultaneous friendly communications, and can prevent the use of friendly radiocommunications altogether.

Innovation Solution

A decentralized, adaptive method that uses multiple waveforms recognizable by friendly transmitters and receivers to measure and adjust transmission and reception strategies, minimizing fratricidal effects by optimizing configuration parameters such as frequency plans, temporal positioning, and antenna settings at each platform, allowing simultaneous jamming of targets and maintenance of friendly communications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If centralized closed-loop control with jammer master station is used, then jamming efficiency is improved, but system complexity and operational flexibility deteriorate

Engineering Contradiction:

Improvejamming efficiencyVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent divides the centralized control system into decentralized autonomous units. Each transmitting station independently performs signal analysis, jamming detection, and configuration adaptation without requiring a central master station. This segmentation eliminates the single point of failure and reduces system complexity while maintaining jamming effectiveness through distributed decision-making.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each transmitting station is equipped with autonomous capabilities to analyze its own reception situation, detect jamming signals, and adapt its transmission configuration independently. The system serves itself through automated signal processing and adaptive reconfiguration without external control, improving reliability while reducing the need for complex centralized management.

Inventive Principle:

Principle #25Self-service

2Reliability

If jamming power is increased to improve target jamming effectiveness, then fratricidal effects on friendly transmitting stations increase

Engineering Contradiction:

Improvejamming effectivenessVSAvoidfratricidal effects

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies different jamming strategies to different spatial locations and targets. By analyzing the reception situation at each transmitting station individually, the system can direct jamming power selectively toward external targets while avoiding friendly stations. This localized approach ensures high jamming effectiveness against enemies while minimizing fratricidal effects on friendly forces.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The system continuously monitors the reception situation at each transmitting station and uses this feedback to adjust jamming configurations in real-time. By detecting the presence and characteristics of jamming signals, the system can adapt transmission parameters to maintain effectiveness against targets while avoiding interference with friendly stations, thus resolving the contradiction between jamming power and fratricidal effects.

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If decentralized adaptive method is used, then operational flexibility and range are improved, but measurement and control precision deteriorate

Engineering Contradiction:

Improveoperational flexibilityVSAvoidjamming situation detection precision

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent equips each transmitting station with pre-configured signal analysis capabilities and jamming detection algorithms before deployment. These preliminary preparations enable rapid autonomous decision-making in dynamic environments without requiring complex real-time centralized analysis, thus maintaining measurement precision while achieving operational flexibility through decentralized adaptation.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP2747328B1Method for jamming communications in an open-loop controlled network

Publication Date: 2021.02.24 THALES SA

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AI summary

The method involves establishing a local jamming situation at the level of each of friendly reception platforms, and measuring jamming signals received by the platforms and originating from jammers. Fratricidal jamming levels are estimated based on the measurement of the jamming signals. One of configuration parameters such as a frequency plan, and/or temporal positionings of the transmissions, antenna diagrams and/or orientations, radio access schemes and modulation/coding schemes is determined for each of transmission platforms, so as to be utilized in transmission and/or reception.