Time synchronization receiving device
A receiving device and time synchronization technology, which is applied in the direction of measuring devices, satellite radio beacon positioning systems, instruments, etc., can solve the problems of reducing the accuracy of time synchronization and affecting the reciprocity of two-way transmission, so as to achieve high accuracy of pseudo-code synchronization and shorten Pseudo-code synchronization time, low calculation effect
Pending Publication Date: 2021-04-16
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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However, changes in the loop parameters such as the signal power of the receiving end of the two stations, the order of the delay-locked loop, and the bandwidth gain will lead to different pseudo-code phase measurement results, thereby affecting the reciprocity of two-way transmission and reducing the accuracy of time synchronization
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[0034] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.
[0035] An embodiment of the present invention discloses a time synchronization receiving device, such as figure 1 As shown, the device includes: a carrier stripping module, a pseudo code correlation module, a phase interpolation module, a carrier generator and a code generator;
[0036] The carrier stripping module obtains the local carrier signal generated by the carrier generator according to the carrier intermediate frequency signal and the received signal to perform carrier stripping and generate a baseband signal;
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The invention discloses a time synchronization receiving device. The time synchronization receiving device comprises a carrier stripping module, a pseudo code correlation module, a phase interpolation module, a carrier generator and a code generator, wherein the carrier generator is configured to generate a local carrier signal according to a preset carrier intermediate frequency; the carrier stripping module is configured to perform carrier stripping according to the local carrier signal and the external signal and generate a baseband signal; a code generator configured to generate a local pseudo code according to a preset pseudo code parameter; the pseudo code correlation module is configured to correlate the baseband signal with a local pseudo code and obtain a pseudo code phase initial threshold of the external signal according to a correlation result; and the phase interpolation module configured to perform phase interpolation and fitting according to the pseudo code phase initial threshold to generate a pseudo code phase measurement value of an external signal. The time synchronization receiving device improves the time synchronization precision, shortens the pseudo code synchronization time, and improves the time synchronization efficiency. The time synchronization receiving device has the advantages of simple structure, low calculation amount and high pseudo code synchronization precision.
Description
technical field [0001] The present invention relates to the field of time synchronization. More specifically, it relates to a time synchronization receiving device. Background technique [0002] High-precision time synchronization is the basis for the transfer and traceability of time and frequency quantities. With the promotion of fast UTC by the International Bureau of Weights and Measures (BIPM), various time-keeping laboratories have also put forward higher requirements for the measurement accuracy of remote comparison results. Two-way time synchronization technology is a widely used high-precision time transfer method, including satellite two-way, microwave two-way, laser two-way time synchronization, etc., which can provide nanosecond-level uncertainty. The two stations use the reciprocity of the signal on the transmission path to receive the modulated time signal of the other station at the same time, exchange the received signal data and then subtract them to obtai...
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IPC IPC(8): G01S19/29G01S19/30
Inventor 王艺陶张升康王海峰王学运宋才水江涌
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT