A signal determination method, device, electronic equipment and storage medium

A signal determination and signal technology, applied in the field of communications, can solve problems such as increasing the probability of loss of lock and inability to achieve stable signal tracking.

CN110113287BActive Publication Date: 2020-06-05BEIJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-06-05

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Abstract

The embodiment of the invention provides a signal determination method and device, electronic equipment and a storage medium. The method comprises the steps of acquiring a sample signal and a currentreceiving signal; determining a joint probability density function of the sample signal and the current received signal with respect to each parameter to be estimated; determining an expression corresponding to the parameter to be estimated when the joint probability density function obtains a maximum value through a maximum likelihood estimation algorithm; calculating doppler frequency offset andcode delay through a Gauss Newton method, and obtaining a target value of the Doppler frequency offset, a target value of the code delay, a target value of a carrier phase and a target value of a signal amplitude according to an expression corresponding to a parameter to be estimated when a calculation result of the Doppler frequency offset and the code delay meets preset conditions, wherein thetarget value of the Doppler frequency offset, the target value of the code delay, the target value of the carrier phase and the target value of the signal amplitude represent the current received signal. According to the invention, stable tracking of a signal with a small duty ratio is realized.
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Description

technical field

[0001] The present invention relates to the field of communication technology, in particular to a signal determination method, device, electronic equipment and storage medium. Background technique

[0002] The TC-OFDM (Time&Code Division-Orthogonal Frequency Division Multiplexing) positioning system based on the terrestrial mobile broadcast network multiplexes high-speed data signals and navigation signals in the same spectrum range in order to improve frequency resource utilization. , and transmit TC-OFDM signals through mobile base stations distributed in a cellular form, and determine the received TC-OFDM signals through spread spectrum receivers to realize self-positioning.

[0003] Specifically, the TC-OFDM system is used to continuously generate TC-OFDM signals, the continuous TC-OFDM signals are received by the traditional closed-loop tracking loop method through the spread spectrum receiver, and the current receiving TC-OFDM signal is determined by th...

Examples

Embodiment Construction

[0075] 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 only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0076] In the first aspect, the embodiment of the present invention discloses a signal determination method, such as figure 1 shown. figure 1 It is a flowchart of a method for determining a signal in an embodiment of the present invention, and the method includes:

[0077] S101. Obtain a sample signal and a current received signal.

[0078] The executor of the embodiment of the present invention may be a signal receiver, that is, the embodiment of the presen...