Methods and apparatus are provided for integrated communication and sensing. For example, an electronic device may transmit a radio frequency (RF) pulse signal in the active phase of a periodic sensing cycle, and sense in the passive phase of the sensing cycle, a reflection of the RF pulse signal reflected from an object. The RF pulse signal is defined by a waveform for carrying communication data between electronic devices. The sensed RF pulse signal is at least a portion of the transmitted or reflected RF pulse signal, wherein the portion is equal to or greater than a threshold value for the object being within a sensing range of the first electronic device. The electronic device may also receive a communication signal from another electronic device during the passive phase.

An external cavity diode laser has been developed to achieve a linear frequency chirp over a broad bandwidth using a silicon photonic filter chip as the external cavity. By appropriately chirping the cavity phase using the gain chip and/or a cavity phase modulator on the silicon photonic chip along with simultaneously varying the filter resonance, approximately linear frequency chirping can be accomplished for at least 50 GHz, although desirable structures with useful lesser chirp bandwidths are also described. With careful control of the chip design, it is possible to achieve predictable behavior of mode jumps along with large scannable ranges within a mode, which allows for stitching together segments of linear chirp through a mode jump to provide for very large chirp bandwidths greater than 1 THz.

Methods and systems for improved controlling of computing devices using notification sounds are provided. In one embodiment, a method is provided that includes generating a notification sound at a first computing device. The notification sound may contain an ultrasonic portion containing an audio transmission. The notification sound may be transmitted in response to a request from an application executing on the first computing device. The notification sound may be received at a second computing device, which may extract the ultrasonic portion of the notification sound. The audio transmission may be extracted from the ultrasonic portion and the second computing device may execute a computing process based on the contents of the audio transmission.

A light detection and ranging (LIDAR) system includes an automatic gain control (AGC) unit to reduce the dynamic range, reducing processing power and saving circuit area and cost. The system detects a return beam of a light signal transmitted to a target, having a first dynamic range in a time domain. An analog to digital converter (ADC) generates a digital signal based on the return beam. A processor can perform time domain processing on the digital signal, convert the digital signal from the time domain to a frequency domain, and perform frequency domain processing on the digital signal in the frequency domain. The AGC unit can measure a power of the return beam, and apply variable gain in the time domain to reduce a dynamic range of the return beam to a second dynamic range lower than the first dynamic range.

A radio transceiver for communicating with one or more transceiver equipped targets, the transceiver including; a transmitter for transmitting radio signals in a transmit frequency band, wherein the transmitter is arranged to transmit a data signal in case a transceiver equipped target is present and to transmit a dummy signal in case a transceiver equipped target is not present, a receiver for receiving radio signals in a receive frequency band, and a detector for detecting backscattered radio signals in the transmit frequency band, wherein the detector is arranged to estimate a distance to at least one target object based on the backscattered radio signals.

A reflector arrangement having at least one retroreflector and at least one sensor arrangement arranged downstream of the retroreflector in relation to a beam incidence direction, having a sensor. The sensor arrangement comprises a code element—having a code pattern, and the retroreflector, the code element—and the sensor are arranged in such a way that the code element—is arranged between the retroreflector and the sensor and an angle-dependent position with respect to the optical axis of a projection of the code pattern onto the detection surface can be determined by means of the sensor.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for performing data compression and data decompression on lidar range images.

A level radar device with adaptive, angle-dependent transmission power adjustment, which calculates the maximum permissible transmission power of the transmitted signal on the basis of the radiation direction of the transmitted signal and the radiation characteristic of an antenna.

Embodiments of this application disclose a communication method and an apparatus thereof, to implement data communication between a first communication apparatus and a second communication apparatus, so that spectrum resource utilization can be improved. The method in embodiments of this application includes: The first communication apparatus determines a first sensing signal and a second sensing signal; and the first communication apparatus determines a third sensing signal, where the third sensing signal is obtained based on a first data signal and the first sensing signal, the first data signal is a data signal to be sent by the first communication apparatus to the second communication apparatus, and a first frequency difference between a frequency of the second sensing signal and a frequency of the third sensing signal is a preset threshold; and the first communication apparatus sends the second sensing signal and the third sensing signal.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a first sensing signal transmitted by a base station. The UE may determine a preferred sensing direction for a second sensing signal based at least in part on the first sensing signal. The UE may transmit a directional sensing signal request to the base station. The directional sensing signal request may include information indicating the preferred sensing direction for the second sensing signal. Numerous other aspects are provided.