DIRCM Module Handover via Event Signal Coordination

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Solution Overview

Problem

Current Directed Infrared Counter Measure (DIRCM) systems face challenges in seamlessly handing over target tracking and jamming responsibilities between modules during dynamic aircraft maneuvers, leading to potential overlap and inefficiencies in defense against infrared-guided missiles.

Innovation Solution

A synchronized, sequential handover procedure is implemented, where the first module sends a requirement signal to the second module, allowing it to transition from jump to recognition, then centering mode, ensuring a safe shutdown of the first module's tracking and jamming before the second module activates its chase mode, preventing simultaneous tracking and jamming by both modules.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If multiple DircM modules operate simultaneously in overlap areas to provide comprehensive coverage, then the coverage area and protection capability are improved, but the risk of overlapping tracking and jamming operations increases, leading to system inefficiency and potential conflicts

Engineering Contradiction:
Improvecoverage areaVSAvoidoperational reliability
Core Design Contradiction:
Area of stationary objectVSReliability

Solution Approach 1:

The system implements a feedback mechanism where modules send event signals to each other about their operational status and target acquisition state. This feedback allows the system to detect when a module has successfully acquired a target and adjust other modules' operations accordingly, preventing overlapping jamming while maintaining comprehensive coverage.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary actions by having modules prepare for potential target acquisition in advance. When a module detects a target in its detection area, it enters recognition mode and notifies other modules before actually engaging in chase mode, allowing the system to pre-coordinate and prevent overlapping operations.

Inventive Principle:
Principle #10Preliminary action

2Speed

If a module quickly transitions to chase mode upon detecting a target, then the response time and effectiveness of countermeasure is improved, but the risk of another module already being in chase mode increases, causing overlapping operations

Engineering Contradiction:
Improveresponse speedVSAvoidoverlapping jamming
Core Design Contradiction:
SpeedVSObject-generated harmful factors

Solution Approach 1:

Event signals provide real-time feedback between modules about their operational state. When one module enters chase mode, it sends notifications to other modules, which use this feedback to adjust their own chase mode activation, ensuring rapid response while preventing overlapping jamming operations.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system applies preliminary anti-action by having modules monitor and respond to each other's operational status before engaging in chase mode. This preemptive coordination prevents the harmful effect of overlapping jamming before it can occur, while still allowing rapid response to threats.

Inventive Principle:
Principle #9Preliminary anti-action

3Ease of operation

If modules operate independently without coordination, then the system complexity is reduced and ease of operation is improved, but the precision of target tracking and the avoidance of duplicate operations deteriorates

Engineering Contradiction:
Improveoperational simplicityVSAvoidtarget tracking precision
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The event signal feedback mechanism allows modules to operate with a degree of independence while maintaining coordination. Modules can autonomously detect and track targets, but the feedback system ensures they remain synchronized, preventing duplicate operations and maintaining tracking precision without requiring complex centralized control.

Inventive Principle:
Principle #23Feedback

4Reliability

If the system waits for complete target acquisition by one module before allowing another to engage, then overlapping operations are prevented, but the response time and overall defense capability are reduced

Engineering Contradiction:
Improveoperational coordinationVSAvoidresponse time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary coordination actions through event signal exchange before modules engage in chase mode. This allows modules to prepare and coordinate their operations in advance, enabling rapid response when targets are detected while preventing overlapping jamming through pre-established communication protocols.

Inventive Principle:
Principle #10Preliminary action

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 procedure ensures a smooth and efficient transfer of target tracking and jamming responsibilities between modules, preventing overlap and enhancing the DIRCM system's ability to defend against incoming threats by optimizing the use of laser beams and reducing the risk of double targeting.

Implementation Method 1

The module in particular contains a chasing unit that accumulates the tracking, and a jet unit that creates the jamming. The beam unit in particular contains a stub laser to irradiate the goal.

Methodology Applied
Scientific EffectLaser: Laser

Implementation Method 2

The fight takes place by 'jamming', i.e. irradiate, i.e. the sending of radiation, especially of the above. Laser beams, which is targeted in the search head of the target

Methodology Applied
Scientific EffectIrradiation: Radiation

Data Source

PatentEP3954964B1Dircm with independent overlap-free transfer between modules
Publication Date: 2022.11.23 DIEHL DEFENCE GMBH & CO KG
  • EP3954964B1 patent drawingFigure 1
  • EP3954964B1 patent drawingFigure 2
  • EP3954964B1 patent drawingFigure 3~4

AI summary

In a procedure for transferring an incoming target (2) during its engagement by a DIRCM system (4) from a first DIRCM module (8a) to a second DIRCM module (8b), the first DIRCM module (8a) sends a request signal (SA) to the second DIRCM module (8b) at time T1 to take over the target, the second DIRCM module (8b) sends a first event signal (SE1) to the first DIRCM module (8a) at time T3 when it begins its detection mode (ME) for the target (2) in the detection range (12b) and a second event signal (SE2) to the first DIRCM module (8a) at time T4 when it begins its centering mode (MZ) for the target (2) in the detection range (12b), the first module (8a) ends its tracking mode (MV) for tracking and engaging the target (2) at time T5a as T3 plus a remaining runtime or T5b as T4 plus a Switch-off time. The second module (8b) only switches to its tracking mode (MV) at a time T6 that is definitely after times T5a,b.A DIRCM system (4) is configured to perform the method according to one of the preceding claims.