A range profile digitization circuit for converting a repeating analog input signal into a time series of digital amplitude values, the converter comprising: a signal quantizer arranged to receive the analog input signal and a threshold input and arranged to output a binary value quantized output signal based on a comparison of the input signal with the threshold signal; a plurality of samplers each arranged to sample and hold its input signal upon receipt of a trigger signal; and for each sampler: a plurality of decoders and a demultiplexer arranged to receive an output from the sampler and pass it to a selected one of said decoders based on a selector input. With a plurality of decoders associated with each of the samplers, each sampler can be re-used during the building up of the range profile.

Embodiments described herein provide for the improved detection of target(s) in the vicinity of cluttered environments such as wind farms, and for the reduction of false alarms resulting from wind turbines and other complex structures in such environments. Maximum amplitude readings of all non-zero Doppler frequency bins are determined for each resolution cell under test during a dwell and used to determine an aggregate threshold value. In one embodiment, the aggregate threshold value and an existing threshold value are compared and the higher value applied. A tracking sample period and a transition state delay are introduced to determine when the aggregate threshold value for each resolution cell under test should be updated.

According to a method for operating a sensor system, radiation is emitted during a first and a second measurement time period in order to generate point clouds, the points of which are described by a spatial position and an energy characteristic. A first sub-quantity of a first point cloud and a second sub-quantity of a second point cloud are identified with an energy characteristic which is greater than or equal to an energy threshold in each case. A third sub-quantity of the first point cloud and a fourth sub-quantity of the second point cloud are identified with positions lying within the spatial surroundings of the first sub-quantity and the second sub-quantity, respectively. The spatial extension of the fourth sub-quantity is compared with that of the third sub-quantity, and the points of the third and/or the fourth sub-quantity are marked as artifacts based on the result of the comparison.

In summary, the present invention thus relates to a method of determining a level of a product in a tank, comprising generating and transmitting an electromagnetic transmit signal; guiding the transmit signal towards and into the product; returning an electromagnetic reflection signal resulting from reflection of the transmit signal; receiving, the reflection signal; determining, based on the reflection signal and a timing relation between the reflection signal and the transmit signal, an echo signal exhibiting an echo signal strength as a function of a propagation parameter indicative of position along the probe; and determining the level of the surface of the product based on a propagation parameter value indicative of a first threshold position along the probe for which the echo signal has reached a predetermined threshold signal strength, and an offset indicative of an offset distance along the probe from the first threshold position towards the second probe end.

A system includes a shift register to store data samples, where the shift register includes a cell under test (CUT), a left guard cell, a right guard cell, a left window, and a right window. The system includes two sets of comparators to compare incoming data samples with data samples in the left window and the right window to compute ranks of the incoming data samples. The system includes a sorted index array to store a rank of the data samples in the shift register. The system includes a selector to select a Kth smallest index from the sorted index array and its corresponding data sample from the shift register. The system includes a target comparator, where the first comparator input receives a data sample from the CUT and the second comparator input receives a Kth smallest data sample, and the comparator output indicates a CFAR target detection.

An apparatus for generating a signal with a non-tracker includes a video signal detecting unit detecting a video signal from a reception signal and outputting a video signal exceeding a threshold, an additional noise generating unit mixing the reception signal with additional noise and outputting the reception signal mixed with the additional noise, a stored signal processing unit storing and outputting the reception signal mixed with the additional noise when the video signal exceeding the threshold is input, and a transmission signal gain controller combining a first signal, which is the reception signal mixed with the additional noise transmitted from the additional noise generating unit, and a second signal stored in and output from the stored signal processing unit, and outputting a combined signal.

The invention relates to a method for determining the detection threshold of a radar suited to a given environment, characterized in that it comprises at least: a step in which a set of statistical quantities characterizing said environment is selected; a step in which a set of functions is defined, each of said functions giving an intermediate detection threshold that is a function of statistical quantities taken from a subset of said set of statistical quantities; a step of combination of said intermediate detection thresholds, said detection threshold being the result of said combination.

There is herein provided a provided a method of wireless sensing that can include, at a transmitter which is a component of a transceiver device, transmitting a wireless signal such that the transmitted wireless signal is scattered by an object so as to produce a scattered signal, at a receiver which is a component of the transceiver device, receiving the scattered signal, performing processing on the wireless signal before it is transmitted and/or on the received scattered signal, the processing including an indication of self-coupling occurring at the transceiver device, following the processing, using the received signal to determine information relating to the object, the information including one or more of: a location of the object; a direction of movement of the object; or a speed of the object.

Systems, methods, and devices relating to radar and radar-based applications. A number of comparators are coupled in parallel with each comparator comparing an incoming signal and a predetermined value. If the predetermined value is exceeded by the incoming signal, the comparator output is set to trigger a flip flop. The predetermined value changes with each comparator and, with the signal being the radar reflection from a radar pulse, this allows for the detection of the peak value of the incoming signal. The circuit may be extended so that the output of the comparator which is triggered by the highest peak from the incoming signal is latched. Other variants include being able to count the clock cycles before the highest peak is detected within the range cell.

A system and method for determining when a trailer is located behind a vehicle includes at least one detection device configured to detect objects located behind the vehicle and a processor. The processor is in communication with the at least one detection device and a plurality of signals generated by the vehicle. The processor receives data from the at least one detection device. The data includes a plurality of targets detected by the at least one detection device. Next, the processor determines if one or more clusters exists and clusters the targets into at least one cluster to form cluster features when one or more clusters exist. The processor determines vehicle state based on the vehicle dynamic features from the plurality of signals generated by the vehicle as well as global features from data from the at least one detection device and determines when the trailer is located behind the vehicle based on the cluster features, the vehicle state, and/or the global features.