Method for Determining Estimated Value of Frequency Offset Information
A technology for determining methods and estimated values, applied in the direction of multi-frequency code systems, etc., to achieve the effect of solving low resolution and improving resolution
Active Publication Date: 2022-06-14
北京中科晶上科技股份有限公司
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The embodiment of the present application provides a method for determining the estimated value of frequency offset information to at least solve the technical problem of low resolution of the coarse estimation algorithm in the prior art
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0039] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.
[0040] According to an embodiment of the present application, an embodiment of a metho...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present application discloses a method for determining an estimated value of frequency offset information. Wherein, the method includes: collecting a carrier signal including frequency offset information to be estimated; determining the frequency domain information of the carrier signal according to a preset rotation factor and the carrier signal, the rotation factor is based on the first parameter and the second parameter Commonly determined; determine the maximum value of the amplitude of the frequency domain corresponding to the frequency domain information; determine the point corresponding to the target frequency corresponding to the maximum value and the point corresponding to the target first-order rate of change; based on the point corresponding to the target frequency The point corresponding to the target first-order rate of change determines the estimation result of the frequency offset to be estimated and the estimation result of the first-order rate of change of the frequency offset to be estimated. The present application solves the technical problem of low resolution of the coarse estimation algorithm in the prior art.
Description
technical field [0001] The present application relates to the field of satellite communication, in particular, to a method for determining an estimated value of frequency offset information. Background technique [0002] In the high dynamic scene of low-orbit satellites, satellites have first-order, second-order or even higher-order Doppler frequency offset change rates, which cause great difficulties in the acquisition and tracking of satellite signals. This application takes the DVB-S2 protocol as an example, figure 1 It is a schematic diagram of the synchronization flow in the DVB-S2 protocol in the prior art; figure 1 Among them, the received signal undergoes carrier synchronization 18 after undergoing Doppler frequency offset pre-compensation 12 based on ephemeris, timing synchronization 14, and frame synchronization 16; figure 2 It is a schematic structural diagram of the carrier synchronization module; the carrier synchronization module 22 includes a carrier freque...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
Inventor 王晓鹏苏泳涛税敏刘垚圻张锐李瑞华石晶林胡金龙
Owner 北京中科晶上科技股份有限公司