# US 10,769,541 B2 · Method for determining tactical actions

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- Number: US 10,769,541 B2
- Document ID: US10769541B2
- Status: Granted
- Kind: B2
- Application number: 15/560,510
- Filed: 2016-03-23
- Published: 2018-03-01
- Granted: 2020-09-08
- Earliest claimed: 2015-03-23
- Assignees: Thales
- Applicants: Thales
- Inventors: Christophe Camille Labreuche; Helia Pouyllau; Pierre Saveant; Yann Semet; Jan-Egbert Hamming; Maurice Houtsma
- Web page: https://patentgrep.com/patent/US10769541B2

## CPC

- G06N 7/01: Probabilistic graphical models, e.g. probabilistic networks
- G06F 9/5011: {the resources being hardware resources other than CPUs, Servers and Terminals}
- G06Q 90/00: Systems or methods specially adapted for administrative, commercial, financial, managerial or supervisory purposes, not involving significant data processing
- G06Q 99/00: Subject matter not provided for in other groups of this subclass
- G06N: COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR

## Abstract

Disclosed is a method for determining tactical actions for protecting a reference entity with respect to a plurality of entities in a battlefield environment, the method including: segmenting the battlefield environment into a plurality of layers; associating actable deterrent systems with each layer; obtaining data representative of the probability, for each deterrent system, that the considered deterrent system deters an entity in the associated layer; providing, for each entity, the level of threat of the entity; and computing a cost function for determining the deterrent systems to be engaged by the reference entity for rendering extremal the cost function, the cost function being a function depending from the provided level of threat and the obtained data.

## Claims

### Claim 1

A method for determining tactical actions for protecting a reference entity with respect to a plurality of entities in a battlefield environment, the method comprising:
segmenting the battlefield environment into a plurality of layers around the reference entity,
associating actable deterrent systems with each layer,
obtaining data representative of the probability, for each deterrent system, that a considered deterrent system deters an entity in an associated layer, wherein said obtaining comprises obtaining first kinematic parameters relative to each of said plurality of entities,
providing, for each entity, a level of threat of said entity, wherein said providing comprises
computing second kinematic parameters from said first kinematic parameters, for each of said plurality of entities, said second kinematic parameters presenting a monotonic relationship with regards to the level of threat,
aggregating the second kinematic parameters to obtain a threat level function giving a first level of threat,
calibrating the threat level function with a plurality of training instances to obtain a plurality of calibrated threat levels, and
computing a second threat level using the first threat level and the calibrated threat levels, and
computing a cost function for determining the deterrent systems to be engaged by the reference entity for rendering extremal the cost function, the cost function being a function depending from the level of threat and the obtained data.

### Claim 2 (depends on 1)

The method for determining according to claim 1, wherein, at the obtaining step, data representative of a nature of the entity are obtained.

### Claim 3 (depends on 1)

The method for determining according to claim 1, wherein, at the computing step, the cost function depends at least from the product of the provided level of threat and the obtained data.

### Claim 4 (depends on 1)

The method for determining according to claim 1, wherein at the obtaining step, data representative of the consumption of the considered deterrent system are obtained.

### Claim 5 (depends on 1)

The method for determining according to claim 1, wherein at the computing step, imposed engagement policies are taken into account.

### Claim 6 (depends on 1)

The method for determining according to claim 1, wherein the method further comprises a step of associating with each layer a category of tactical actions that may be engaged by the reference entity.

### Claim 7 (depends on 1)

The method for determining according to claim 1, wherein the method further comprises a step of associating at least one geographical parameter with each layer, said parameters comprising the distance range delimiting the layer, said distance range being associated with a begin range and an end range.

### Claim 8 (depends on 1)

The method for determining according to claim 1, wherein the distance range associated with each layer is predefined and static.

### Claim 9 (depends on 1)

The method for determining according to claim 1, wherein the distance range associated with each layer is dynamically defined depending on predefined criteria.

### Claim 10 (depends on 1)

The method for determining according to claim 1, wherein the entities and the reference entity are ships.

### Claim 11 (depends on 1)

A decision support method comprising the steps of:
carrying out a method for determining tactical actions for protecting a reference entity with respect to a plurality of entities in a battlefield environment according to claim 1,
generating tactical recommendations in association with the determined deterrent systems to be engaged.

### Claim 12 (depends on 1)

A computer program comprising instructions for carrying out the steps of a method according to claim 1 when said computer program is executed on a suitable computer device.

### Claim 13 (depends on 12)

A computer readable medium having encoded thereon a computer program according to claim 12.

### Claim 14 (depends on 1)

The method for determining according to claim 1, wherein, calibrating the threat level comprises a qualitative expert rating of the calibrated threat levels.

### Claim 15

A system for determining tactical actions for protecting a reference entity with respect to a plurality of entities in a battlefield environment, the system comprising:
a calculator that segments the battlefield environment into a plurality of layers around the reference entity, and
an obtaining unit adapted to obtain data representative of a probability, for each deterrent system, that the considered deterrent system deters an entity in the associated layer, wherein said obtaining unit obtains first kinematic parameters relative to each of said plurality of entities,
the calculator being further adapted to associate actable deterrent systems with each layer, to provide, for each entity, a level of threat of said entity and to compute a cost function for determining the deterrent systems to be engaged by the reference entity for rendering extremal the cost function, the cost function being a function depending from the level of threat and the obtained data,
wherein the calculator further computes second kinematic parameters from said first kinematic parameters, for each of said plurality of entities, said second kinematic parameters presenting a monotonic relationship with regards to the level of threat, the calculator further aggregating the second kinematic parameters to obtain a threat level function giving a first level of threat, calibrating the threat level function with a plurality of training instances to obtain a plurality of calibrated threat levels, and computing a second threat level using the first threat level and the calibrated threat levels.

### Claim 16 (depends on 15)

A decision support system comprising a system for evaluating according to claim 15, the calculator being further adapted to generate tactical recommendations in association with the determined deterrent systems to be engaged.