Provided is a radar detector that aids in management of unimportant sources, dynamically improving handling of such sources based upon previously-stored geographically-referenced information on such sources. The detector determines location of the detector, and compares it to locations of known sources, to improve handling of such detections. The detector may ignore detections received in an area known to contain a stationary source, or may only ignore specific frequencies or handle frequencies differently based upon historic trends of spurious police radar signals at each frequency, or based on geofenced locations. GPS is used to establish current physical coordinates. The detector maintains a list of the coordinates of known stationary source offenders and geofence coordinates or boundaries in nonvolatile memory. When a microwave or laser source is detected, it may compare current coordinates to geofence boundaries and/or sources in this list. Notification varies depending on the stored information and current operating modes.

A device includes a radar signal detector that can determine a signal strength of a police radar signal and a direction of a source of the police radar signal. Additionally, the device includes a display in communication with the radar signal detector that provides a single display region having a visual appearance which varies based on both the direction and on the signal strength.

A vehicle detecting method and a vehicle detecting system are provided. The vehicle detecting method includes the following steps. A scanning range of a lidar unit is obtained. A width of a lane is obtained. A trace of the lane is obtained. A dynamic region of interest in the scanning range is created according to the width and the trace.

Motorcycles in a group action share group information to which each of motorcycles belongs and the motorcycles share information with a surrounding four-wheeled vehicle via a vehicle-to-vehicle communication. The information to be shared is the group information. Information from the motorcycle to the four-wheeled vehicle is transmitted when the four-wheeled vehicle is detected by an imaging unit included in the motorcycle or transmitted when a detection unit irradiated from the four-wheeled vehicle is detected.

A computing device in a vehicle can emit a sequence of light pulses having a first speed, then receive a signal from another vehicle. Following this, the computing device can emit a message as a sequence of light pulses having a second speed based on the signal received from the vehicle, wherein the first speed is different from the second speed.

A method and apparatus are provided for detecting a RADAR signal. RADAR channel data in a frequency range is received, where the frequency range is divided into a plurality of equally wide channels. The received RADAR channel data is digitally processed and analyzed to identify a signal in the RADAR channel data in the frequency range. The frequency range is advanced to a next channel of the plurality of channels, where the frequency range of the next channel of the plurality of channels is non-sequential with the frequency range of the first channel. The steps of receiving, processing, and analyzing are repeated for the next channel of the plurality of channels.

A method and apparatus are provided for detecting a RADAR signal. RADAR channel data in a frequency range is received, where the frequency range is divided into a plurality of equally wide channels. The received RADAR channel data is digitally processed and analyzed to identify a signal in the RADAR channel data in the frequency range. The frequency range is advanced to a next channel of the plurality of channels, where the frequency range of the next channel of the plurality of channels is non-sequential with the frequency range of the first channel. The steps of receiving, processing, and analyzing are repeated for the next channel of the plurality of channels.

An enhanced radar detector in one example displays a source direction of one more detected signals simultaneously with a frequency band of the detected signal. In another embodiment, a method detects a location of a false alert source to suppress alerts emanating from the location. A geographic location of a first mid-ship point of a detected radar signal in a vehicle traveling in a first direction are identified/recorded. The geographic location of a second mid-ship point of a detected signal is also identified/recorded in a vehicle traveling in a second different direction. The recorded geographic locations/directions of travel are uploaded to a host server, or evaluated within the radar detector, to identify a false source and mark a false source at an intersection of the first and second midlines. The marked false source location can be used in a detector and/or downloaded to multiple detectors via a social network.

A measurement apparatus includes a light reception section including a light reception element group including light reception elements in a target region, a controller that controls a first light reception element group and a second light reception element group in the light reception element group, so as to read out the first light reception element group and the second light reception element group during periods different from each other, and a signal processing section that performs signal processing on the basis of a signal read out from at least one of the first light reception element group and the second light reception element group. A sum set of the first light reception element group and the second light reception element group includes the light reception elements, and at least part of the first light reception element group is not included in the second light reception element group.

An imaging system includes a sensor that measures a velocity of a moving object, a camera that is different from the sensor and images the object, and a processing circuit that controls the operations of the sensor and the camera, wherein the processing circuit causes the sensor to generate velocity information on the object and measurement timing information on the velocity by causing the sensor to measure the velocity of the object, generates control data, including imaging timing information on the camera, in accordance with (a) position information on the object or distance information on the object at a time of velocity measurement, (b) the velocity information, and (c) the measurement timing information, and causes the camera to output, in response to the control data, image data including image information on the object.