G01S13/103

METHOD AND APPARATUS WITH VEHICLE RADAR CONTROL
20190361114 · 2019-11-28 · ·

A method and apparatus with vehicle radar control is disclosed. An apparatus with vehicle radar control includes a radio frequency (RF) transceiver including a transmitting antenna array and a receiving antenna array, and at least one processor configured to collect environmental information of the vehicle, determine a radar mode of the vehicle based on the collected environmental information, generate one or more control signal configured to control one or more of the transmitting antenna array and the receiving antenna array based on the determined radar mode, and provide the generated one or more control signals to the RF transceiver, wherein one or more of the transmitting antenna array and the receiving antenna array operate according to the one or more generated control signals.

Fastening Assembly for a Radar Level-Measuring Device
20190353514 · 2019-11-21 ·

A fastening assembly for a radar level-measuring device with an antenna with a main emission direction, comprising a microwave window for the spatial and thermal separation and microwave connection of a first space and a second space with a plate-shaped, disk-shaped barrier at least partially permeable to microwaves, wherein a surface of the barrier oriented towards the antenna includes an angle unequal to 90 with the main emission direction.

Distance measuring apparatus and method using impulse correlation

A distance measuring apparatus includes: a DTC generator unit that generates DTC signals having edges delayed to define time segments; a template generator unit that generates template signals consecutively in a pre-designated number within the time segments in response to the DTC signals; a coarse time determiner unit that determines the time segment in which a delayed signal is received by calculating correlations with the consecutively generated template signals; a fine time measurer unit that determines the time at which the delayed signal is received within the time segment determined at the coarse time determiner unit from the results of calculating correlations between multiple template signals within the determined time segment and the delayed signal; and a distance calculator unit that calculates the total delay duration of the delayed signal and calculates the distance to the measurement target object from the calculated delay duration.

Transmitter-receiver system
10444338 · 2019-10-15 · ·

According to one aspect of the inventive concept there is provided a transmitter-receiver system comprising: a transmitter arranged to transmit a wavelet; a receiver arranged to receive a wavelet; a wavelet generator arranged to generate a reference wavelet; and timing circuitry arranged to receive a reference clock signal, output a first trigger signal for triggering transmission of a wavelet and output a second trigger signal for triggering generation of a reference wavelet. The timing circuitry further comprises a delay line including at least one delay element and being arranged to receive a signal at an input of the delay line and transmit a delayed signal at an output of the delay line, wherein a state of each delay element of at least a subset of said at least one delay elements is switchable between at least a first state and a second state. A delay element in said first state, i.e. switched to its first state, presents a first propagation delay. A delay element in said second state, i.e. switched to its second state, presents a second propagation delay which differs from the first propagation delay by a value which is smaller than a period of the reference clock signal. Thereby a total propagation delay of the delay line is configurable by controlling the state of each delay element of said subset. The system further comprises a controller arranged to control a delay between the first trigger signal and the second trigger signal by controlling the total propagation delay of the delay line. The system is arranged to correlate the reference wavelet with a received wavelet for at least one setting of the total propagation delay.

Radar level gauge comprising a safety device
10422682 · 2019-09-24 · ·

The invention relates to a radar level gauge comprising a signal generator for generating electromagnetic waves and an antenna for emitting the electromagnetic waves in a container and for receiving electromagnetic waves reflected by the container. The radar level gauge also comprises a safety device for verifying the functional capability or for improving the measuring quality of the radar level gauge, said safety device having a reflector and an adjustment device and/or a reduction device and being suitably designed to adjust the reflector and/or the reduction device at least between a first position, in which the reflector reflects the electromagnetic waves and a second position, in which the reflector reflects the electromagnetic waves in a reduced manner. The safety device also has at least one additional sensor for detecting a measured variable in the container.

Methods for optimizing the detection of marine targets and airborne radar implementing such a method

A detection method for a given mission comprises: a phase of analyzing the environment, wherein phase elements of influence on the sea clutter perceived by the radar are sought and stored in memory; a phase of updating the path to be followed by the carrier depending on the requirements of the mission and the elements of influence issued from the result of the analyzing phase, the path to be followed decreasing the power of the clutter received by the radar when the antenna is pointing towards a search zone liable to contain a target; the phases being repeated throughout the mission.

Paired ZF sampling for pulse running time filling level sensor

A pulse running time filling level sensor includes a sampling device for sampling an IF signal at discrete instants and for converting the sampling values into digital sampling values, and a digital signal processing device for subsequent processing of the digital sampling values by calculating at least one new value characterizing the IF curve from respectively exactly two digital sampling values.

PRECISION ADC SAMPLING CLOCK FOR HIGH ACCURACY WIRELESS GUIDED WAVE RADAR
20190195674 · 2019-06-27 ·

A level transmitter includes an analog-to-digital convertor clock signal generator that receives a transmitter clock signal that is used to establish when an incident signal is transmitted toward a material boundary. The analog-to-digital convertor clock signal generator uses the received transmitter clock signal to generate an analog-to-digital convertor clock signal. An analog-to-digital convertor samples an analog waveform based on the analog-to-digital convertor clock signal and generates a digital value for each sample of the analog waveform. An analysis module analyzes the digital values to determine a distance to the material boundary.

Apparatus and method for adjusting guided wave radar pulse width to optimize measurements

An apparatus includes at least one processing device configured to determine an optimal pulse width for obtaining level measurements associated with material in a tank. The at least one processing device is also configured to generate a control signal that causes a transmitter of a guided wave radar (GWR) to transmit a signal having the optimal pulse width. The at least one processing device is further configured to send the control signal to the transmitter. The at least one processing device can also be configured to alter a length of the optimal pulse width in order to reduce false echoes detected by the GWR, reduce a size of an upper dead zone of the GWR, and/or detect a change of impedance to identify a fault of a process connector in the GWR.

SYSTEM AND METHOD FOR SENSING DISTANCE AND/OR MOVEMENT
20190162834 · 2019-05-30 ·

A method (e.g., a method for measuring a separation distance to a target object) includes transmitting an electromagnetic first transmitted signal from a transmitting antenna toward a target object that is a separated from the transmitting antenna by a separation distance. The first transmitted signal includes a first transmit pattern representative of a first sequence of digital bits. The method also includes receiving a first echo of the first transmitted signal that is reflected off the target object, converting the first echo into a first digitized echo signal, and comparing a first receive pattern representative of a second sequence of digital bits to the first digitized echo signal to determine a time of flight of the first transmitted signal and the echo.