# US 9,435,613 B2 · Semi-active laser seeker synchronization

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- Number: US 9,435,613 B2
- Document ID: US9435613B2
- Status: Granted
- Kind: B2
- Application number: 14/170,773
- Filed: 2014-02-03
- Published: 2015-09-10
- Granted: 2016-09-06
- Earliest claimed: 2013-08-28
- Assignees: Rosemount Aerospace Inc.
- Applicants: Rosemount Aerospace Inc.
- Inventors: William Caplan
- Web page: https://patentgrep.com/patent/US9435613B2

## CPC

- F41G 7/22: Homing guidance systems
- F41G 3/145: {using a target illuminator}
- F41G 7/007: {Preparatory measures taken before the launching of the guided missiles}
- F41G 7/226: {Semi-active homing systems, i.e. comprising a receiver and involving auxiliary illuminating means, e.g. using auxiliary guiding missiles}
- F41G 7/2293: {using electromagnetic waves other than radio waves}
- F41G: WEAPON SIGHTS; AIMING (optical aspects thereof G02B)

## Abstract

A system for semi-active laser seeker synchronization includes a laser target designator configured to emit a laser pulse signal and a seeker configured to detect the emitted signal from the laser target designator. The laser target designator and the seeker are operatively connected to synchronize the emission of the laser pulse signal and the detection of the seeker.

## Claims

### Claim 1

A system for semi-active laser seeker synchronization, the system comprising:
a laser target designator configured to emit a laser pulse signal;
a seeker configured to detect the emitted signal from the laser target designator, wherein the laser target designator and the seeker are operatively connected to synchronize the emission of the laser pulse signal and the detection of the seeker; and
a launch platform configured to synchronize the laser target designator and the seeker, wherein, prelaunch, the laser target designator and the seeker are located on the launch platform.

### Claim 2 (depends on 1)

The system recited in claim 1, wherein the seeker is a sensor sensitive to the laser energy.

### Claim 3 (depends on 1)

The system as recited in claim 1, wherein the laser target designator is configured to emit laser pulse signals at predetermined time intervals.

### Claim 4 (depends on 3)

The system as recited in claim 3, wherein a digital signal processor of the seeker is programmed to search for the laser pulse signal during the predetermined time intervals.

### Claim 5 (depends on 1)

The system as recited in claim 1, wherein the laser target designator is configured to emit the laser pulse signal within a predetermined boundary around the target.

### Claim 6

A method for semi-active laser seeker synchronization, the steps comprising:
using a launch platform to synchronize a laser target designator and a seeker, wherein, prelaunch, the laser target designator and the seeker are located on the launch platform;
emitting a laser pulse signal from the laser target designator; and
detecting the emitted laser signal with the seeker.

### Claim 7 (depends on 6)

The method as recited in claim 6, wherein detecting the emitted laser signal includes detecting the signal with a sensor of the seeker.

### Claim 8 (depends on 6)

The method as recited in claim 6, wherein emitting the laser pulse signal includes emitting the laser pulse signal within a predetermined boundary around a target.

### Claim 9 (depends on 6)

The method as recited in claim 6, wherein the seeker is a sensor sensitive to the laser energy.

### Claim 10 (depends on 6)

The method as recited in claim 6, wherein emitting the laser pulse signal includes emitting the laser pulse signals at predetermined time intervals.

### Claim 11 (depends on 10)

The method as recited in claim 10, wherein a digital signal processor of the seeker is programmed to search for the laser pulse signal during the predetermined time intervals.