Abstract: A GNSS signal acquisition method based on FPGA step-by-step code phase refinement comprises steps as follows: (1) Coarse acquisition: correlate all received data with the locally generated carrier and the complete pseudo-random code to find the maximum correlation value; obtain the carrier and the rough code phase for fine acquisition if the maximum correlation value conforms to the acquisition threshold; otherwise, repeat Step (1). (2) Fine acquisition: feedback the carrier and the coarse acquisition code phase value from Step (1) to the controller so that the controller can intercept partial of the received signal for mixing with the local carrier from Step (1); then, correlate the result with partial pseudo-random code after eliminating the influence of the carrier to obtain a code phase with higher accuracy.

Abstract: The invention discloses a method, device and system for in-sequence live streaming, belonging to the technical field of computers. The method includes receiving a terminal type of a streamer terminal sent by the streamer terminal during the in-sequence live streaming; determining a target transcoding mode corresponding to the terminal type of the streamer terminal according to the pre-stored corresponding relation between the terminal type and the transcoding mode; and receiving live streaming data sent by the streamer terminal, transcoding the live streaming data according to the target transcoding mode, and sending the transcoded live streaming data to a viewer terminal of a live streaming room to which the streamer terminal belongs. By the invention, the user can use the mobile terminal to conduct in-sequence live streaming.

Abstract: The invention discloses a method, device and system for in-sequence live streaming, belonging to the technical field of computers. The method includes receiving a terminal type of a streamer terminal sent by the streamer terminal during the in-sequence live streaming; determining a target transcoding mode corresponding to the terminal type of the streamer terminal according to the pre-stored corresponding relation between the terminal type and the transcoding mode; and receiving live streaming data sent by the streamer terminal, transcoding the live streaming data according to the target transcoding mode, and sending the transcoded live streaming data to a viewer terminal of a live streaming room to which the streamer terminal belongs. By the invention, the user can use the mobile terminal to conduct in-sequence live streaming.