Generation of LIDAR data
AssigneeSiLC Technologies, Inc.
InventorsMajid Boloorian, Dazeng Feng, Mehdi Asghari
Life of this patent
Estimating the term…
Abstract
A LIDAR system includes a LIDAR chip configured to combine a LIDAR input signal and a reference signal so as to generate a composite light signal. The LIDAR input signal includes light reflected by an object located off of the LIDAR chip. The reference signal does not include light reflected by the object. The system also includes electronics configured to use the composite light signal to approximate a radial velocity between the LIDAR chip and the object. The radial velocity is approximated from a difference between a first distance and a second distance. The first distance is the distance between the object and the LIDAR chip at a first time. The second distance is the distance between the object and the LIDAR chip at a second time.
Claims40
A LIDAR system, comprising:
- a LIDAR chip configured to combine light from a LIDAR input signal and a reference signal so as to generate a composite light signal,
- the LIDAR input signal including light from a LIDAR output signal reflected by an object located off of the LIDAR chip, the LIDAR output signal having a carrier signal with an amplitude that is a function of a sinusoid with a chirped frequency, and
- the reference signal not including light reflected by the object;
- and
- electronics configured to use the composite light signal to approximate a radial velocity between the LIDAR chip and the object, the radial velocity being approximated from a difference between a first distance and a second distance,
- the first distance being a distance between the object and the LIDAR chip at a first time, and
- the second distance being a distance between the object and the LIDAR chip at a second time.
A LIDAR system, comprising:
- a LIDAR chip configured to combine light from a LIDAR input signal and a reference signal so as to generate a composite light signal,
- the LIDAR input signal including light from a LIDAR output signal reflected by an object located off of the LIDAR chip, the LIDAR output signal having a carrier signal with an amplitude that is a function of a sinusoid,
- the sinusoid having a frequency represented by f=fo+t*α or f=fo+α*DP*−t*α where α represents the rate of frequency change during a data period, fo represents a base frequency, and t represents time, and DP represents the duration of the data period, and
- the reference signal not including light reflected by the object;
- and
- electronics configured to use the composite light signal to approximate a radial velocity between the LIDAR chip and the object, the radial velocity being approximated from a difference between a first distance and a second distance,
- the first distance being a distance between the object and the LIDAR chip at a first time, and
- the second distance being a distance between the object and the LIDAR chip at a second time.
A LIDAR system, comprising:
- a LIDAR chip configured to combine light from a LIDAR input signal and a reference signal so as to generate a composite light signal,
- the LIDAR input signal including light from a LIDAR output signal reflected by an object located off of the LIDAR chip,
- the LIDAR output signal having an electrical field represented by:
- (M+N*cos(E+f*t))1/2cos(F*t) where M, N, E, and F are constants, M>0, N>0 and is a constant, M≥N, t represents time, f represents a frequency and cos(F*t) represents a base carrier signal, and
- the reference signal not including light reflected by the object;
- and
- electronics configured to use the composite light signal to approximate a radial velocity between the LIDAR chip and the object, the radial velocity being approximated from a difference between a first distance and a second distance,
- the first distance being a distance between the object and the LIDAR chip at a first time, and
- the second distance being a distance between the object and the LIDAR chip at a second time.
Dependencies are inferred from the claim text.