A target search system includes: a signal processing unit that is input with a received signal including a reflected wave based on a pulsed transmission wave modulated in linear frequency modulation, calculates mutual correlation between the transmission wave and the received signal, and amplifies a power ratio of a signal component of a reflected wave from a target and another signal component at a predetermined process gain; a specifying unit by which a user specifies one value of a pulse length, a frequency change ratio, and a frequency amplitude of the transmission wave and the process gain; and a transmission wave determination unit that determines a remaining value of the transmission wave based on the specified one value of the pulse length, the frequency change ratio, and the frequency amplitude of the transmission wave and the specified process gain so as to satisfy a relational equation for the process gain.

Time of flight between two or more ultrasonic transceivers is measured using known delays between receiving a trigger and sending an ultrasonic pulse in reply. A receive time is measured from a beginning of a receive phase in which the pulse is detected until receipt of an ultrasonic reply pulse. A trip time is determined from a sum of the receive time and a difference between a known first reference period for a transceiver that sends the trigger pulse and a second know reference period for a second transceiver that sends the reply pulse. The second reference period corresponds to a delay between when the second transceiver receives the initial or subsequent trigger pulse from the first transceiver and when the second transceiver sends the reply pulse.

Methods and instrumentation for pulse scattering estimation and imaging of scattering parameters in a material object by transmitting a pulse along a transmit beam and directing a receive beam that crosses at least one transmit beam at an angle <45 deg. The receive beam is at least in an azimuth direction at the transmit beam, and records scattered receive signal from the overlap region. A receive interval of the receive signal is gated for further processing to form measurement and/or image signals from cross-beam observation cells.

Embodiments of the present invention relates to a self-moving apparatus and a method for controlling same, the self-moving apparatus including: a housing; a movement module for driving the housing to move; an ultrasonic module configured to transmit an ultrasonic signal and receive an echo signal formed through reflection of an obstacle; and a control module installed on the housing and connected to the ultrasonic module, to implement an ultrasonic detection function by processing the echo signal, thereby controlling a movement mode of the movement module. The control module can control disabling of the ultrasonic detection function according to a received preset signal.

An electronic device, a method thereof, a non-transitory computer-readable recording medium, and a chipset are disclosed. The electronic device includes a sensor module including a plurality of sensor arrays for scanning a target object located in a predetermined vicinity of the electronic device; and a control module configured to determine a direction in which the target object is located, based on a first signal that the sensor module outputs with respect to the target object, and scan the target object located in the determined direction, wherein the sensor arrays are spaced apart from each other.

In an object detection device to be installed to a vehicle and detect an object outside the vehicle, a position calculator sets multiple candidate points representing a candidate position of the object, based on positions of feature points extracted from a first image captured at a first time. The multiple candidate points are set to be denser within a detection range set based on a distance to the object detected by the ultrasonic sensor than outside the detection range. The position calculator estimates positions of the multiple candidate points at a second time which is after the first time, based on the positions of the multiple candidate points and movement information of the vehicle, and calculates the position of the object by comparing the estimated positions of the multiple candidate points at the second time and the positions of the feature points extracted from a second image captured at the second time.

Ultrasonic ranging systems and methods that use coding to distinguish emitted bursts from multiple transducers temporally stagger the bursts emitted from the transducers. The stagger delay between bursts from different transducers in a sensing frame can be randomized between different sensing frames to prevent blind zones. The stagger delay can be relatively small (e.g., between 3 ms and 10 ms) as compared to delays required between bursts in a single-tone ranging system (which would need to be more on the order of between 30 ms and 40 ms, depending on the maximum detecting range of the ranging system). The coding of bursts can be selected to utilize the entire bandwidth of the bursting transducer so as to preserve short-range sensitivity over transducer ringing. Schemes in which some transducers in a system only listen for bursts from other transducers but do not themselves burst within a sensing frame are also described.

A vehicular sensing system includes a plurality of radio frequency (RF) sensor units disposed at a vehicle so as to have respective fields of sensing exterior of the vehicle. Each RF sensor unit includes a plurality of transmitting antennae and a plurality of receiving antennae, with each transmitting antenna transmitting RF signals and each receiving antenna receiving RF signals transmitted by each transmitting antenna to provide a respective field of sensing of each of the RF sensor units. A data processor of each RF sensor unit processes data provided from the respective receiving antennae and generates an output of the respective RF sensor unit. The outputs of the RF sensor units are communicated to an ECU and, responsive to the outputs of the RF sensor units, the ECU detects objects present exterior the vehicle and within the field of sensing of at least one of the RF sensor units.

An object detection device includes: first and second transmission/reception units transmitting and receiving an exploration wave to detect a peripheral object; and a processing unit determining a position of an object based on reception results of the first and second transmission/reception units. The processing unit calculates a first point based on first and second exploration waves, calculates a second point based on third and fourth exploration waves, determines that the object exists on a line segment interconnecting the first and second points when a distance between the first and second points is less than a predetermined value, and determines that the object exists on the line segment and line segments extended from both ends of the line segment when the distance between the first and second points is equal to or greater than the predetermined value.

An object detection device includes: a wave receiver that receives a reflected wave generated by reflection, by an object, of a transmission wave incident on the object; a determination section that determines whether, in a change over time in an amplitude of the reflected wave received by the wave receiver, an amplitude of a falling portion is greater than a predetermined criterion, the amplitude of the falling portion being decreased after the amplitude has reached a maximum value; and a processing section that, on the basis of a determination by the determination section that the amplitude of the falling portion is greater than the predetermined criterion, performs a process in which the object is treated as an object to be avoided.