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Signal processing method, device, computer equipment and medium for terminal

A signal processing and signal technology, applied in measurement devices, services based on specific environments, wireless communications, etc.

Active Publication Date: 2022-02-15
深圳市海豚科技创新有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a signal processing method, device, computer equipment, and medium for a terminal, so as to eliminate the influence of the difference in frequency response of the microphone of a mobile phone without making changes to the hardware, so as to achieve accurate indoor positioning problem

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  • Signal processing method, device, computer equipment and medium for terminal
  • Signal processing method, device, computer equipment and medium for terminal
  • Signal processing method, device, computer equipment and medium for terminal

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0025] The signal processing method for the terminal provided by the embodiment of the present invention can be applied in such as figure 1 In an application environment, the signal processing method for a terminal is applied in a signal processing system for a terminal, and the signal processing system for a terminal includes a client and a server, wherein the client communicates with the server through a network. The client, also known as the client,...

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Abstract

The invention discloses a signal processing method, device, computer equipment and medium for a terminal, wherein the signal processing method for a terminal includes: using a frame length guard interval algorithm to process a sampling signal, so that the sampling signal only includes A complete chirp signal; the chirp signal is band-pass filtered through the time domain or frequency domain to obtain the band-pass filtered signal; the cross-correlation algorithm is used to process the band-pass filtered signal to obtain the cross-correlation result corresponding to the chirp signal, where , performing normalization processing on at least one of the chirp signal, the bandpass filtered signal, or the cross-correlation result. This method can adapt to most mobile phones with the same parameters under the premise of maintaining recognition accuracy, thereby saving the workload of separate debugging for various mobile phones.

Description

technical field [0001] The present invention relates to the technical field of indoor positioning, in particular to a signal processing method, device, computer equipment and medium for a terminal. Background technique [0002] In applications such as radar or positioning, base stations (or radars, GPS satellites, and beacons, etc.) are required to send out signals including electromagnetic waves, sound waves, etc., which are then received by the terminal, and the time of arrival (Time of Arrival, TOA) of the signal is calculated, and then Then solve the terminal positioning according to models such as TOA or TDOA. The waveform of the signal generally adopts a linear frequency modulation (LFM) signal, also called a chirp signal, and the calculation of the signal arrival time is generally obtained by methods such as cross-correlation. [0003] In the application of acoustic indoor positioning, the base station transmits signals using ultrasonic chirp signals, and the mobile ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/02H04W64/00H04W4/33H04B1/69
CPCG01S5/0218H04W64/00H04W4/33H04B1/69H04B2001/6912
Inventor 黄力成李莹洁王世超
Owner 深圳市海豚科技创新有限公司