# US 2014/0195152 A1 · Autonomous Velocity Sensing by Time Dilation

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0195152 A1
- Document ID: US20140195152A1
- Status: Published application
- Kind: A1
- Application number: 13/738,120
- Filed: 2013-01-10
- Published: 2014-07-10
- Earliest claimed: 2013-01-10
- Inventors: Robert S. Neiswander
- Web page: https://patentgrep.com/patent/US20140195152A1

## CPC

- G01C 21/10: by using measurements of speed or acceleration (G01C21/24, G01C21/26 take precedence)
- G01S 19/52: Determining velocity
- G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S)
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES

## Abstract

A system and method for determination of a vehicle or crafts velocity uses on-board time dilation measurements of a moving signal generator and signal generator movement measurements to determine a velocity vector of a craft or vehicle.

## Claims

### Claim 1

A method of determining a vector velocity of a craft or vehicle by on-board measurements of motion-induced time dilation, the method comprising:
a. providing one or more oscillators producing multiple periodic measurements of oscillator motion velocity;
b. calculating the time dilation associated with the measurements of oscillator motion velocity; and
c. calculating the vector velocity of the craft from the time dilation calculations.

### Claim 2

A method of determining a vector velocity of a craft or vehicle by on-board measurements and data processing, the method comprising:
a. providing an oscillator producing a periodic signal,
b. dilating the signal period by moving the oscillator,
c. measuring the oscillator motion,
d. measuring the signal period dilation by an analyzer with zero velocity,
e. periodically repeating steps b. through d. providing a set of period dilation measurements,
f. selecting maximum and minimum dilated periods from the set of period dilation measurements, and
g. determining the vector velocity from the maximum and minimum period dilations.

### Claim 3 (depends on 2)

The method of claim 2 further comprising in step g. the velocity vector is GPS velocity vector determined by the period dilations.

### Claim 4 (depends on 2)

The method of claim 2 further comprising transforming the GPS vector velocity to a geodetic velocity vector.

### Claim 5 (depends on 2)

The method of claim 2 further comprising:
a. in step b. dilating the signal period by moving the oscillator in a circular path,
b. in step c measuring the direction and movement of the oscillator, and
c. in step g. determining the velocity vector from the maximum and minimum period dilations whereby the direction concurrent with the maximum dilated period includes a GPS velocity vector.

### Claim 6 (depends on 2)

The method of claim 2 further comprising transforming the GPS velocity vector to a geodetic velocity vector.

### Claim 7

A vector velocity system for a craft or vehicle containing one or more similar modules; each module comprising:
a. an oscillator producing a periodic signal,
b. a mechanism for moving the oscillator,
c. an encoder arranged to measure the oscillator motion,
d. an analyzer with zero velocity arranged to receive the signal from the moving oscillator and produce a measurement of the period dilation of the moving oscillator's signal,
e. a computer programmed to receive a set of multiple period dilation and motion measurements and select maximum and minimum periods from the set, and
f. the computer also programmed to determine a craft or vehicle vector velocity component from the maximum and minimum dilated periods.

### Claim 8 (depends on 7)

The vector velocity sensor system of claim 7 further comprising the computer is programmed to determine a craft or vehicle GPS velocity vector component.

### Claim 9 (depends on 7)

The vector velocity sensor of claim 7 further comprising the computer is programmed to determine a craft or vehicle geodetic vector velocity components.

### Claim 10 (depends on 7)

The vector velocity sensor of claim 7 further comprising the computer is programmed to determine a craft or vehicle body axes velocity components,

### Claim 11 (depends on 7)

The vector velocity sensor system of claim 7 further comprising the mechanism for moving the oscillator comprising:
a. an arm supporting said oscillator,
b. a hub attached to the arm,
c. a hollow shaft inserted into the said hub, and arm,
d. a motor rotating the shaft, hub, and arm.

### Claim 12 (depends on 10)

The vector velocity sensor system of claim 10 further comprising the encoder arranged to measure the oscillator motion comprises a shaft encoder and electronics measuring the angle of the shaft.

### Claim 13 (depends on 10)

The vector velocity sensor system of claim 10 further comprising an analyzer having zero velocity arranged to receive the signal from the moving signal oscillator.