Carrier phase tracking method and device, storage medium and processor
A technology for tracking carrier phase and carrier phase, which is applied in the field of satellite communications and can solve problems such as affecting filtering accuracy and reducing carrier phase tracking accuracy.
Inactive Publication Date: 2020-11-17
北京中科晶上科技股份有限公司
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[0007] Embodiments of the present application provide a method and device for tracking carrier phase, a storage medium, and a processor, so as to at least solve the problem of unscented Kalman filtering in the process of unscented Kalman filtering in the prior art when the carrier wave is synchronized in a high-dynamic scene. The local effect affects the filtering accuracy, resulting in a technical problem that the tracking accuracy of the carrier phase is reduced
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[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0029]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 ...
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The invention discloses a carrier phase tracking method and device, a storage medium and a processor. The method comprises the steps that a carrier signal collected by a sampling point is received inreal time, and the carrier signal carries the carrier phase, the carrier frequency and the change rate of the carrier frequency of the signal; and in a high dynamic scene, a time-varying carrier phasein the carrier signal is tracked based on preset parameters, the preset parameters comprising tracker frequency and a change rate of tracking frequency, wherein in the tracking process, the distancebetween each sampling point in the sampling point set and the central point is controlled by adjusting a scaling factor, and the scaling factor is used for determining the distribution result of the sampling points in the area range of the central point. According to the application, the technical problem that the tracking accuracy of the carrier phase is reduced due to the fact that the filteringaccuracy is influenced by the non-local effect generated by sampling in the unscented Kalman filtering process when carrier synchronization is carried out in a high dynamic scene in the prior art issolved.
Description
technical field [0001] The present application relates to the field of satellite communication, in particular, to a method and device, a storage medium, and a processor for tracking carrier phase. 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. Such as figure 1 As shown, the received signal undergoes carrier synchronization after Doppler frequency offset pre-compensation based on ephemeris, symbol synchronization, and frame synchronization. Carrier synchronization includes carrier frequency acquisition and carrier phase tracking. The carrier phase tracking is based on the carrier frequency acquisition module, and the auxiliary tracking module quickly enters the locked state. In the highly dynamic scenario of the low-orbit satellite communication system, car...
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IPC IPC(8): H04B1/7087H04L27/26
CPCH04B1/7087H04L27/2657
Inventor 苏泳涛胡金龙
Owner 北京中科晶上科技股份有限公司