초록 ▼

A method of generating in-quadrature signals is disclosed. The method comprises phase shifting a Doppler frequency-shifted signal; phase shifting a local oscillator signal; mixing the phase shifted Doppler frequency-shifted signal and the phase-shifted local oscillator signal generating thereby a si

A method of generating in-quadrature signals is disclosed. The method comprises phase shifting a Doppler frequency-shifted signal; phase shifting a local oscillator signal; mixing the phase shifted Doppler frequency-shifted signal and the phase-shifted local oscillator signal generating thereby a signal which includes the phase-shifted Doppler frequency-shifted signal and a further phase-shifted local oscillator signal; and mixing the unphase-shifted Doppler frequency-shifted signal and the unphase-shifted local oscillator signal generating thereby a signal which includes the unphase-shifted local oscillator signal and a further phase-shifted Doppler frequency-shifted signal. A method of determining the velocity of an object is also disclosed. The method comprises receiving a Doppler frequency-shifted signal reflected or backscattered from the object; generating a local oscillator signal; based upon the received Doppler frequency-shifted signal and the local oscillator signal, generating an in-phase signal; based upon the received Doppler frequency-shifted signal and the local oscillator signal generating an in-quadrature signal; summing the in-phase signal and the in-quadrature signal; and transforming the summation of the in-phase signal and the in-quadrature signal. A lidar is disclosed comprising an optical system for transmitting an output signal to an object and receiving thereby a Doppler frequency-shifted signal reflected or backscattered from the object; a signal mixing assembly receptive of the Doppler frequency-shifted signal and a local oscillator signal generating thereby an in-phase signal and an in-quadrature signal; and a signal transformer for transforming the in-phase signal and an in-quadrature signals. A signal mixing system is disclosed comprising an array of signal couplers receptive of a Doppler frequency-shifted signal and a local oscillator signal generating thereby an in-phase signal which includes the unphase-shifted local oscillator signal and a phase-shifted Doppler frequency-shifted signal and an in-quadrature signal which includes the phase-shifted Doppler frequency-shifted signal and a further phase-shifted local oscillator signal; and a plurality of signal detectors receptive of the in-phase and in-quadrature signals.

대표청구항 ▼

A method of generating in-quadrature signals is disclosed. The method comprises phase shifting a Doppler frequency-shifted signal; phase shifting a local oscillator signal; mixing the phase shifted Doppler frequency-shifted signal and the phase-shifted local oscillator signal generating thereby a si

A method of generating in-quadrature signals is disclosed. The method comprises phase shifting a Doppler frequency-shifted signal; phase shifting a local oscillator signal; mixing the phase shifted Doppler frequency-shifted signal and the phase-shifted local oscillator signal generating thereby a signal which includes the phase-shifted Doppler frequency-shifted signal and a further phase-shifted local oscillator signal; and mixing the unphase-shifted Doppler frequency-shifted signal and the unphase-shifted local oscillator signal generating thereby a signal which includes the unphase-shifted local oscillator signal and a further phase-shifted Doppler frequency-shifted signal. A method of determining the velocity of an object is also disclosed. The method comprises receiving a Doppler frequency-shifted signal reflected or backscattered from the object; generating a local oscillator signal; based upon the received Doppler frequency-shifted signal and the local oscillator signal, generating an in-phase signal; based upon the received Doppler frequency-shifted signal and the local oscillator signal generating an in-quadrature signal; summing the in-phase signal and the in-quadrature signal; and transforming the summation of the in-phase signal and the in-quadrature signal. A lidar is disclosed comprising an optical system for transmitting an output signal to an object and receiving thereby a Doppler frequency-shifted signal reflected or backscattered from the object; a signal mixing assembly receptive of the Doppler frequency-shifted signal and a local oscillator signal generating thereby an in-phase signal and an in-quadrature signal; and a signal transformer for transforming the in-phase signal and an in-quadrature signals. A signal mixing system is disclosed comprising an array of signal couplers receptive of a Doppler frequency-shifted signal and a local oscillator signal generating thereby an in-phase signal which includes the unphase-shifted local oscillator signal and a phase-shifted Doppler frequency-shifted signal and an in-quadrature signal which includes the phase-shifted Doppler frequency-shifted signal and a further phase-shifted local oscillator signal; and a plurality of signal detectors receptive of the in-phase and in-quadrature signals. user interface (GUI) by which the viewer of the display screen is in communication with the computer program. 12. The method of claim 9, wherein the titles of the plurality of programming subcategories are presented on the display screen by a computer program that determines the relative importance of each of the programming subcategories of the plurality of programming subcategories as measured by the measuring value. 13. The method of claim 9, wherein the titles of the plurality of programming subcategories are displayed within an interface box on the display screen that is a graphical user interface (GUI) by which the viewer of the display screen is in communication with a computer program that determines the relative importance of each of the programming subcategories of the plurality of programming subcategories as measured by the measuring value and displays the titles of the plurality of programming subcategories within the interface box. 14. The method of claim 9 further comprising: displaying content for the plurality of programming subcategories on the display screen in a manner that visually indicates the relative importance of each of the programming subcategories. 15. The method of claim 1 further comprising: displaying content for the plurality of programming categories in a manner that visually indicates the relative importance of each of the programming categories. 16. A semantic category display system, comprising: a display screen; and a computer system, having a computer program, that is operatively coupled to the display screen, wherein titles of a plurality of programming categories are displayed on the display screen in a manner that visually indicates to a viewer of the display screen through one or more visual factors the relative importance of each of the programming categories of the plurality of programming categories as measured by a measuring value and as determined by the computer program, said one or more visual factors being size and location. 17. The system of claim 16, wherein the measuring value is set through a user interface displayed on the display screen that is in communication with the computer program. 18. The system of claim 16, wherein the measuring value is set by the computer program. 19. The system of claim 16, wherein the titles of the plurality of programming categories are presented in an interface box within the display screen. 20. The system of claim 19, wherein the interface box is a graphical user interface (GUI) by which the viewer of the display screen is in communication with the computer program. 21. The system of claim 16, wherein the computer program operates to update the one or more visual factors through which the titles of the plurality of programming categories are displayed on the display screen in response to a change in the measur