摘要:
An angle scanning radar system having a group antenna controlled via a beam-shaping network, a coupling device that allows the group antenna to be operated for both the transmitting and receiving directions, and a device to mix radar receiving signals with radar transmitting signals to form a mixed baseband signal, and to digitally evaluate the mixed baseband signal with regard to the solid-angle information.
摘要:
A transmitting device for electromagnetic radiation includes a waveguide having an input for coupling an electromagnetic wave into the waveguide, and multiple openings in the waveguide for emitting the electromagnetic wave. A controllable closure element is provided for selectively closing at least one of the openings with respect to the electromagnetic radiation.
摘要:
An FMCW radar locating device includes a transmitting device having a controllable transmitting-signal-generating device generating a transmitting signal having a frequency corresponding to an input control signal; a control device connected to the transmitting-signal-generating device and generating the input control signal which controls the transmitting signal such that it rises periodically in a discontinuous, inconsistent linear fashion in first frequency segments, and drops periodically in a discontinuous, inconsistent linear fashion in second frequency segments; and a receiving device for receiving an echo signal reflected by an object and locating an object based on the received echo signal.
摘要:
An antenna has an antenna body having a plurality of first antenna elements, which are disposed along a first straight line. A hollow conductor, which extends between the first antenna elements, is disposed in the antenna body. The first antenna elements are developed as openings running between the hollow conductor and a surface of the antenna body. The antenna is designed to radiate a signal in a spatial direction that is a function of a frequency of the signal. The antenna body has an electrically insulating material that is coated with a conductive material.
摘要:
An antenna has an antenna body having a plurality of first antenna elements situated along a first straight line. The antenna body includes a first conductive grounded surface and a second conductive grounded surface, the first and second grounded surfaces being situated essentially parallel to one another. A dielectric is situated between the first and second grounded surfaces. A signal conductor is also situated between the first and second grounded surfaces. The first antenna elements are designed as apertures situated above the signal conductor in the first grounded surface. Furthermore, the antenna is designed to emit a signal in a direction in space, depending on a frequency of the signal. At least two of the first antenna elements differ from one another in such a way that their power emissions are different.
摘要:
Radar sensor for motor vehicles, having a transmitting and receiving device for microwaves, in which beam-shaping devices which are independent of one another are provided for the azimuth and the elevation, and the beam-shaping device for the elevation has a cylindrical lens.
摘要:
An antenna has an antenna body having a plurality of first antenna elements, which are disposed along a first straight line. A hollow conductor, which extends between the first antenna elements, is disposed in the antenna body. The first antenna elements are developed as openings running between the hollow conductor and a surface of the antenna body. The antenna is designed to radiate a signal in a spatial direction that is a function of a frequency of the signal. The antenna body has an electrically insulating material that is coated with a conductive material.
摘要:
Radar sensor for motor vehicles, having a transmitting and receiving device for microwaves, in which beam-shaping devices which are independent of one another are provided for the azimuth and the elevation, and the beam-shaping device for the elevation has a cylindrical lens.
摘要:
An FMCW radar locating device includes a transmitting device having a controllable transmitting-signal-generating device generating a transmitting signal having a frequency corresponding to an input control signal; a control device connected to the transmitting-signal-generating device and generating the input control signal which controls the transmitting signal such that it rises periodically in a discontinuous, inconsistent linear fashion in first frequency segments, and drops periodically in a discontinuous, inconsistent linear fashion in second frequency segments; and a receiving device for receiving an echo signal reflected by an object and locating an object based on the received echo signal.
摘要:
In a method for checking the plausibility of objects in driver assistance systems for motor vehicles is described, two measured variables are derived from position data from two object position-finding systems of the vehicle that operate independently of one another, for an object located by the two position-finding systems, one variable for each position-finding system, these variables representing one and the same physical parameter, and the two measured variables are then checked for consistency, which is characterized by the fact that the parameter is the time to collision of the vehicle with the object, which is calculated in advance.