9 results about "Time division switching" patented technology

The invention relates to a wind measurement laser radar system, which comprises a first light source assembly for emitting first signal light and a second light source for emitting multimode pump laser, the acousto-optic device is used for performing pulse and frequency shift modulation on the first signal light to obtain second signal light; the first optical fiber is a double-cladding erbium-ytterbium co-doped optical fiber and is used for amplifying the second signal light to obtain third signal light; the polarization reflection device filters amplified spontaneous emission light in the third signal light to obtain fourth signal light; the first optical fiber further amplifies the fourth signal light again to obtain fifth signal light; the acousto-optic device performs pulse and frequency shift modulation on the fifth signal light again to obtain sixth signal light; the time division switching device controls the deflection module to deflect the sixth signal light, so that the sixth signal light is split by the beam splitting module at different time to obtain seventh signal light, the seventh signal light is emitted through different ports, the power of the two-way amplifier can be further improved, and the detection distance of the wind measurement radar is increased.

The invention discloses a dual-band multi-wavelength laser radar and a coaxial transmitting and receiving method thereof, and belongs to the technical field of laser radars, the laser radar comprises an industrial personal computer, a laser, a transmitting light path, a receiving telescope, a collimating lens, a first detector, a second detector and a data acquisition module; a laser is controlled by an industrial personal computer to output laser of two wave bands, the laser of the two wave bands is adjusted and expanded in an emission light path and then is emitted into the atmosphere at the same time, the laser interacts with molecules and aerosol in the atmosphere, and an atmosphere back scattering echo signal is collected by a receiving telescope; after being collimated by the collimating lens and split by the spectroscope, two wavebands are respectively received by the two detectors and are input into the industrial personal computer for data processing and result display; the lasers of the two wave bands are detected simultaneously through the wavelength division multiplexing technology, and the lasers of different wavelengths in the same wave band are subjected to time division switching detection through the time division multiplexing technology. According to the invention, the multi-target gas profile detection capability of a single laser radar system can be improved.

The one or more embodiments of the specification disclose a method and system for electromagnetic propagation environment acquisition, an electronic device and a storage medium. The method is used in a computing control center, comprising: in the case of receiving a parameter acquisition signal of an electromagnetic propagation environment, sending a time division switching scanning signal to a switch network, so that the switch network scans an antenna array for receiving an air interface signal through different time slice scans, and the elements of the antenna array in each time slice scan are different; receiving a first channel impulse response located in multiple time slices sent by a signal processing unit, the first channel impulse response being obtained by signal processing of the air interface signal transmitted by the switch network in multiple time slices after the signal processing unit receives the air interface signal; based on a preset parameter acquisition index, jointly processing and analyzing the first channel impulse responses of different time slices to obtain parameters of the electromagnetic propagation environment.

The invention discloses a mobile communication uplink signal positioning method, a sniffer device and a positioning system, relates to the technical field of wireless communication, and has the advantages of flexible scheme, low cost, wide application scene and the like. The positioning method comprises the following steps: receiving an uplink signal of user equipment through a sniffer device equipped with an antenna; user equipment identification information is obtained in a collaborative or independent mode; extracting a corresponding target signal according to the identification information; and finally calculating the position of the user equipment according to the target signal. The invention further provides a'time-division switching antenna 'scheme, the effect of a large-scale array can be equivalent by using a low-cost small-scale antenna array, the hardware cost is remarkably reduced, and the technical pain point in the prior art can be effectively solved.

This application discloses when a first terminal device has performed a connection to a wireless access device based on a first channel (for example, a DFS channel), it may be determined whether both the first terminal device and a second terminal device support performing peer-to-peer communication in the first channel. When it is determined that both the configurations support establishing peer-to-peer communication in the first channel, peer-to-peer communication may be established based on the first channel. It can be ensured that a channel for communication between a device of at least one end and a wireless access device is the same as a channel for peer-to-peer communication, to effectively reduce occurrence of a scenario in which the terminal device performs time division switching between different channels, increase time for transmitting data in a peer-to-peer channel, and avoid a phenomenon like picture freezing, thereby improving user experience.

Proposed is a technology related to a compensation method for excess loop delay (ELD) using a time division switching (TDS) technique. A delta-sigma modulator (DSM) to which the compensation method for excess loop delay is applied includes a single op-amp resonator (SOR) loop filter. The loop filter includes an operational amplifier, a plurality of capacitors connected to each other in series between an input terminal and an output terminal of the operational amplifier, and a plurality of resistor units connected in common to one among nodes between the plurality of capacitors. For at least two of the plurality of resistor units, a resistance value of each of the at least two resistor units is changed according to a clock signal, and a coefficient of a third-order transfer function of the loop filter is changed according to the clock signal, thereby effectively compensating for excess loop delay of the delta-sigma modulator.

The embodiment of the invention discloses an interlayer communication method, device and equipment based on a time division switching voice communication system. An expansion board of a control layer in the system is provided with a first serial deserializing module, a drive board of an expansion layer is provided with a second serial deserializing module, and the first serial deserializing module and the second serial deserializing module are in serial communication through a serial data link. The control layer converts the first to-be-sent data into first to-be-sent serial data through the first serial deserializing module; the expansion layer restores the first to-be-sent serial data into the first to-be-sent data by using a second serial deserializing module; the expansion layer converts the second to-be-sent data into second to-be-sent serial data through a second serial deserializing module; and the control layer restores the second serial data to be sent into the second data to be sent by using the first serial deserializing module. On the basis, serial data transmission is converted between the control layer and the expansion layer, and the purposes of reducing the number of connecting lines, simplifying wiring and weakening data interference are achieved.

The invention provides a communication method and device, a computer readable storage medium and a chip. The method is used for a first terminal device in a first network. A first connection is established between the first terminal device and a second terminal device in the second network. The method includes sending a request message to a second terminal device over a first connection. The request message is used for requesting to establish the second connection with the second terminal device, and the request message comprises the first quality information of the plurality of candidate channels. The method further includes receiving a response message for the request message from the second terminal device, the response message including second quality information of the plurality of candidate channels. The method further comprises determining a channel for communication between the first terminal device and the second terminal device at least based on the response message. The working channel of the fused network is negotiated through the pre-established first connection, so that the terminal equipment in the fused network can work on the same channel, time-division switching of the channel is avoided, and the communication efficiency and the communication quality are improved.

Communication methods, devices, computer readable storage media and chips are provided. The method is used for a first terminal device in a first network. A first connection is established between the first terminal device and a second terminal device in a second network. The method includes sending a request message to the second terminal device through the first connection. The request message is used to request to establish a second connection with the second terminal device, and the request message includes first quality information of a plurality of candidate channels. The method further includes receiving a response message for the request message from the second terminal device, the response message including second quality information of the plurality of candidate channels. The method further includes determining a channel for communication between the first terminal device and the second terminal device based on at least the response message. The working channel of the fused network is negotiated through the pre-established first connection, so that the terminal devices in the fused network can work on the same channel, avoiding time division switching of the channel, improving communication efficiency and communication quality.