A chip-implementation of a millimeter wave MIMO radar comprises transmitters for transmitting short bursts of digitally modulated radar carrier signals and receivers for receiving delayed echoes of those signals. Various signal formats defined by the number of bits per transmit burst, the transmit burst duration, the receive period duration, the bitrate, the number of range bins, and the number of bursts per scan, facilitate the choice of modulating bit patterns such that when correlating for target echoes over an entire scan, the correlation codes for different ranges and different transmitters are mutually orthogonal or nearly so as compared to a random selection of codes. In the event of imperfect orthogonality, the subtraction of strong already-detected target signals allows for better detecting of weaker signals or moving targets that are rendered non-orthogonal by their Doppler shift.

The invention is related to an automotive lighting device (10) comprising a light source (1) configured to emit light in a light direction (dl), a sensor (2) and a cover (3). The sensor (2) is configured to acquire information outside the lighting device by emitting a wave in a sensor direction (d2), the wavelength of the wave being comprised between 1 mm and 1 cm. The cover (3) comprises a first portion (31) located in the light direction and a second portion (32) located in the sensor direction, the second portion (32) comprising a sensor region (33) having a refractive index and a thickness which is comprised between 0.8 and 1.2 times an ideal thickness, the ideal thickness being equal to a natural number multiplied by the wavelength and divided by two times the refractive index.

The invention relates to a light element of a vehicle with at least one light source configured to emit light rays, a reflective layer. With a pattern made wholly or partly in the reflective layer. The light element further including an optical element configured to project the light rays from the at least one light source towards the reflective layer. With a dark layer extending along the optical element on the side opposite the reflective layer.

An engine starting device includes a board on which a pin header serving as an on-board component is mounted, a case member that has a tubular shape and that is disposed so as to surround the board, and an antenna coil that is disposed in the case member and that is electrically connected to an antenna terminal partly embedded in the pin header serving as an on-board component.

A radar apparatus includes an antenna device including a first transmitting antenna, a second transmitting antenna, and a receiving antenna, a transceiver configured to transmit a transmission signal through one of the first transmitting antenna and the second transmitting antenna and receive a reflection signal reflected on an object through the receiving antenna, and a controller configured to process the reflection signal received through the receiving antenna to obtain information on the object, wherein the controller controls the transceiver to receive the reflection signal through the second transmitting antenna and the receiving antenna when the transmission signal is transmitted through the first transmitting antenna.

Provided is an antenna for receiving radio waves including frequencies in the L6 band unique to QZSS to realize accurate positioning by QZSS. A substrate-type antenna 1 comprises an arcuate antenna element 20 including a long arcuate antenna element 22 and a short arcuate antenna element 24, each of which includes an integral antenna element compatible with three frequency bands and a single antenna element compatible with one frequency band and arranged with a space from the integral antenna element. Each of the integral antenna element and the single antenna element extends from an outer peripheral part of the arcuate antenna element toward an inner peripheral part thereof. The substrate-type antenna 1 further comprises a plurality of connection units 34 connected to the long arcuate antenna element 22 and the short arcuate antenna element 24, respectively, and a coupler 30 to which the plurality of connection units 34 is coupled.

A device for emitting and receiving electromagnetic radiation, in which different antennas are used for the emitting and receiving, a first antenna or first group being used for the transmission in a first polarization form, a second antenna or second group being used for the transmission in a second polarization form, and a third antenna or third group being used for receiving the reflected electromagnetic radiation that was emitted by the first antenna or first group and by the second antenna or second group. The device may be fixed in place on a motor vehicle and used for object detection within the framework of a distance and speed control or a collision avoidance, and the polarimetric information obtained from the different receiving levels during the propagation of the two differently polarized electromagnetic waves via different propagation paths is able to be used for ascertaining a weather-related road condition.

A method and an apparatus for recognizing an absorptive radome coating on an apparatus for emitting electromagnetic radiation and receiving partial radiation reflected at objects is disclosed. The radome covers at least one antenna of the apparatus. A mixer mixes a frequency-modulated transmission signal with the signal received by the at least one antenna, the mixed product of the mixer is subjected to analog-to-digital conversion, the digitized signal is transformed into a two-dimensional spectrum, and the two-dimensional spectrum is mapped with a transfer function. The two-dimensional spectrum that was mapped with the transfer function is correlated with correlation matrices in order to carry out pattern recognition.

The present disclosure relates to a radome for a motor vehicle, including a main body comprising at least one zone transparent to waves emitted by a wave-emitting element, wherein the at least one zone is configured to be traversed by said waves, the at least one zone comprising a face comprising an alternation of first parts covered by at least one layer of paint and second parts not covered by the at least one layer of paint, the first parts and second parts forming at least one decorative pattern and arranged to make the at least one decorative pattern transparent to the waves emitted by the wave-emitting element.

A lamp device includes: a lamp unit; a radar unit having an antenna; and a shielding member which covers at least a part of the front surface of the radar unit where the antenna is provided and which is made of a foamed resin.