# US 10,309,750 B2 · Method and a system for increasing aiming accuracy of a sniper rifle

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- Number: US 10,309,750 B2
- Document ID: US10309750B2
- Status: Granted
- Kind: B2
- Application number: 16/006,023
- Filed: 2018-06-12
- Published: 2018-12-27
- Granted: 2019-06-04
- Earliest claimed: 2017-06-14
- Assignees: Sako Oy
- Applicants: Sako Oy
- Inventors: Sampsa Olkinuora
- Web page: https://patentgrep.com/patent/US10309750B2

## CPC

- F41G 3/08: with means for compensating for speed, direction, temperature, pressure, or humidity of the atmosphere (measuring G01)
- F41A 21/30: Silencers
- F41A 21/32: Muzzle attachments or glands (F41A21/26, F41A21/30, F41A21/46 take precedence {; for projectile velocity measurements G01P3/665, G01P3/685})
- F41G 1/38: Telescopic sights specially adapted for smallarms or ordnance (telescopic sights in general G02B); Supports or mountings therefor {(Means for mounting sighting or aiming devices on firearms F41G11/001)}
- F41G 1/473: for lead-indicating or range-finding, e.g. for use with rifles or shotguns
- F41G 3/065: {Structural association of sighting devices with laser telemeters}
- F41G 3/12: with means for compensating for muzzle velocity or powder temperature {with means for compensating for gun vibrations}
- F41G 3/142: {based on observation of a first shoot; using a simulated shoot (training F41G3/26)}
- G01P 3/665: {for projectile velocity measurements}
- F41G: WEAPON SIGHTS; AIMING (optical aspects thereof G02B)
- F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- G01P: MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B5/02, A61B8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L3/00; vehicle lighting systems adapted to indicate speed B60Q1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C23/00; measuring velocity of sound G01H; measuring velocity of light G01J7/00; measuring direction or velocity of solid objects by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V; {measuring or recording the speed of trains B61L23/00; speed indicators incorporated in motor vehicles B60K35/00; measuring frequency or phase G01R; traffic control G08G})

## Abstract

The invention relates to an aiming method, aiming system and computer program product utilized in the aiming method where also a real-time bullet velocity of a fired shot by a sniper rifle is utilized. The bullet velocity is measured in a suppressor in real-time for each fired shot. The suppressor sends the measured bullet velocity to a data logger of the sniper rifle. The data logger updates a bullet trajectory to a target after each fired shot and on the bases of an updated bullet trajectory the data logger sends new reticle setting to an optical scope connected to the sniper rifle.

## Claims

### Claim 1

An aiming system for increasing a hit probability of a sniper rifle, the aiming system comprising:
a scope connected to the sniper rifle comprising means configured to measure a range to a target by a laser apparatus when a trigger in a sniper rifle grip is pressed to a first position, and
a data logger of the sniper rifle being configured to measure
local meteorological data comprising at least temperature, humidity and air pressure
a geographical coordinates of the sniper rifle
a heading of a barrel of the sniper rifle
a position of the barrel of the sniper rifle, and
receive the range to the target sent by the scope, and that
the data logger is configured to calculate a bullet trajectory for a shot by utilizing the range, meteorological data and for a first shot to be fired velocity information of a bullet shot in the similar meteorological conditions stored in the data logger and based on the calculated bullet trajectory to send elevation information to the scope, and that
the sniper rifle is configured to shoot a bullet when the trigger in the rifle grip is pressed to a second position,
wherein the measurement system further comprises
a suppressor configured to measure a velocity of the shot bullet and to send wirelessly the measured velocity of the shot bullet to the data logger, and
the data logger configured to utilize the measured velocity of the shot bullet when calculating an improved bullet trajectory for a next bullet to be shoot.

### Claim 2 (depends on 1)

The aiming system according to claim 1, wherein the suppressor comprises a first sound trap including a first capacitive sensor assembled a fixed distance from a second sound trap including a second capacitive sensor.

### Claim 3 (depends on 2)

The aiming system according to claim 2, wherein each of said either capacitive or inductive sensors is configured to generate an electrical pulse when the fired bullet passes by said capacitive or inductive sensors.

### Claim 4 (depends on 3)

The aiming system according to claim 3, wherein the suppressor comprises means configured to calculate the velocity of the shot bullet by dividing a timing difference between electrical pulses of the first capacitive or inductive sensor and the second capacitive or inductive sensor with the fixed distance between the first capacitive or inductive sensor and the second capacitive or inductive sensor and means to transmit the calculated bullet velocity wirelessly to the data logger.

### Claim 5 (depends on 1)

The aiming system according to claim 1, wherein the suppressor comprises a first sound trap including a first inductive sensor assembled a fixed distance from a second sound trap including a second inductive sensor.

### Claim 6 (depends on 1)

The aiming system according to claim 1, wherein the suppressor comprises at least two sound traps including either capacitive or inductive sensors that both sensors are configured to generate an electrical pulse when a shot bullet passes by said capacitive or inductive sensors.

### Claim 7 (depends on 6)

The aiming system according to claim 6, wherein the suppressor comprises means configured to calculate a velocity of the shot bullet by dividing a timing difference between electrical pulses of the first capacitive or inductive sensor and the second capacitive or inductive sensor with the fixed distance between the first capacitive or inductive sensor and the second capacitive or inductive sensor and that the suppressor comprises further means to transmit the calculated bullet velocity wirelessly to a data logger of a sniper rifle.

### Claim 8

An aiming method for increasing a hit probability of a sniper rifle, the method comprising:
measuring a range to a target by a scope connected to sniper the rifle and sending the measured range to a data logger of the sniper rifle when a trigger of a rifle grip of the sniper rifle is pressed to a first position
measuring by the data logger
local meteorological data comprising at least temperature, humidity and air pressure
a location of the sniper rifle
a heading of a barrel of the rifle, and
a position of the barrel of the sniper rifle, and
calculating by the data logger a bullet trajectory for a shot by utilizing the measured range, meteorological measurement data and for a first shot to be fired velocity information of a bullet shot in the similar meteorological conditions stored in the data logger
sending a calculated elevation information to the scope, and
shooting by the sniper rifle when the trigger of the rifle grip is pressed to a second position,
wherein the method further comprises:
measuring a velocity of the shot bullet by a suppressor and sending wirelessly the measured velocity from the suppressor to the data logger,
storing the measured bullet velocity in a memory of the data logger, and
calculating an improved bullet trajectory for a next bullet to be shot by the data logger by utilizing also the stored velocity data of the shot bullet.

### Claim 9 (depends on 8)

The aiming method according to claim 8, wherein the suppressor comprises two either capacitive or inductive sensors both generating an electrical pulse when the shot bullet passes by said capacitive or inductive sensors.

### Claim 10 (depends on 9)

The aiming method according to claim 9, wherein the suppressor calculates the velocity of the shot bullet by dividing a timing difference between electrical pulses of the first capacitive or inductive sensor and the second capacitive or inductive sensor with a fixed distance between the first capacitive or inductive sensor and the second capacitive or inductive sensor.

### Claim 11

A computer program product comprising computer program code means adapted to perform the following program code steps when said program is executed on a processor of a data logger of a sniper rifle for increasing a hit probability, the computer program product comprising:
code means for measuring a range to a target by utilizing a scope connected to the sniper rifle
code means for measuring
local meteorological data comprising at least temperature, humidity and air pressure
a location of the sniper rifle
a heading of a barrel of the rifle, and
a position of the barrel of the sniper rifle, and
code means for calculating a bullet trajectory for a shot by utilizing the measured range, meteorological measurement data and for a first shot to be fired velocity information of a bullet shot in the similar meteorological conditions stored in the data logger, and
code means for sending a calculated elevation information to the scope, wherein the computer program product further comprises:
code means for receiving a velocity of the shot bullet measured by a suppressor
code means for storing the received bullet velocity in a memory of the data logger, and
code means for calculating an improved bullet trajectory for a next bullet to be shot by utilizing also the stored velocity data of the shot bullet.