Apparatus and Method for Angle-Resolved Determination of the Distance and Speed of an Object
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Abstract
An apparatus includes a plurality of sensor modules that are disposed at spacings with respect to one another, each sensor module having a local oscillator device. The oscillator device generates an oscillator signal that is passed on to a transmit/receive device, and the oscillator signal is radiated. The transmit/receive device is set up such that it can receive signals reflected from the object. A phase detection device is coupled at one input to the oscillator device and at a second input to the transmit/receive device. Based on the oscillator signal and the received reflected signals, the phase detection device determines a phase signal. A control and signal-processing device determines, based on the spacings of the sensor modules with respect to one another and the phase signals, a direction of the object with respect to the sensor module.
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Citations
32 Claims
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1-20. -20. (canceled)
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21. An apparatus for determination of a distance to an object (K), comprising:
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a control and signal-processing device; and a plurality of sensor modules, each sensor module including a local oscillator device configured to generate an oscillator signal, a transmit/receive device configured to transmit a respective oscillator signal and to receive signals reflected by the object, and a phase detection device coupled at one input to the oscillator device and at a second input to the transmit/receive device configured to determine a phase difference between the oscillator signal and the received reflected signal and connected at one output to the control and signal-processing device, the sensor modules disposed with respect to one another at spacings in a range of half a wavelength to five times a wavelength of the oscillator signal; wherein the control and signal-processing device is configured to determine, based on the spacings and differences of the phase differences, a direction of the object with respect to the sensor modules. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 32)
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30. A method for a determination of a distance to an object, comprising:
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transmitting an oscillator signal from at least one of transmit/receive module of sensor modules; receiving by the transmit/receive module, from a direction, signals reflected at the object; determining a phase difference between the oscillator signal and the received reflected signal; determining, by a control and signal-processing device, the direction, based on spacings of the sensor modules with respect to one another and the ascertained phase differences. - View Dependent Claims (31)
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Specification