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Pulse radar device and method for registering, detecting and/or evaluating at least one object

  • US 20050156779A1
  • Filed: 12/11/2002
  • Published: 07/21/2005
  • Est. Priority Date: 02/27/2002
  • Status: Abandoned Application
First Claim
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1. A pulse radar apparatus (100) for acquisition, detection, and/or evaluation of at least one object, having [a] at least one oscillator unit (20), in particular a microwave oscillator unit, for generating oscillator signals;

  • [b] at least one transmission branch (10) connected after the oscillator unit (20), with [b.1] at least one emitted pulse switch unit (12), which can be acted on by the oscillator signals and is for generating pulse-modulated high-frequency signals, and [b.2] at least one transmitting antenna unit (16), which is connected after the emitted pulse switch unit (12) and is for emitting the high-frequency signals generated by the emitted pulse switch unit (12);

    [c] at least one reception branch (50), in particular an RF (radio frequency) branch, connected after the oscillator unit (20), with [c.1] at least one receiving antenna unit (30) for receiving the signals reflected against the object, [c.2] at least one received pulse switch unit (52, 54, 56, 58) connected after the receiving antenna unit (30), and [c.3] at least one I/Q (inphase/quadrature) mixing unit (62, 64, 66, 68) that is connected after the receiving antenna unit (30) and is for mixing [c.3.1] the signals, which are received by the receiving antenna unit (30) and can act on the first input connection of the I/Q mixing unit (62, 64, 66, 68), [c.3.2] with the oscillator signals, which can act on the second input connection of the respective I/Q mixing unit (62, 64, 66, 68);

    [d] at least one clock-pulse generator unit (22), in particular an LF (low-frequency) clock-pulse generator unit, for generating clock signals that can act on both the emitted pulse switch unit (12) and on the received pulse switch unit (52, 54, 56, 58); and

    [e] at least one pulse delay unit (24) that is connected between the clock-pulse generator unit (22) and the received pulse switch unit (52, 54, 56, 58) and is for executing a defined time delay of the clock signals, which trigger the received pulse switch unit (52, 54, 56, 58), in relation to the clock signals, which trigger the emitted pulse switch unit (12), characterized in that the receiving antenna unit (30) is embodied as at least one group antenna that has at least two antenna elements (32, 34, 36, 38) and is designed to receive the signals reflected against the object as vectorial signals and that the reception branch (50) is followed by at least one receiving circuit (70), in particular an LF (low-frequency) receiving circuit, for evaluating and processing the received vectorial signals so that it is also possible to measure and determine the angular position of the at least one object.

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