Navigation constellation inter-satellite link transceiver device time delay calibration method

A transceiver and inter-satellite link technology, which is used in satellite radio beacon positioning systems, measuring devices, instruments, etc., can solve the problem of inconsistent absolute delay values, inability to accurately characterize real-time delay values, and inappropriate equipment time. Delayed real-time, online accurate measurement and other issues

CN104267408AInactive Publication Date: 2015-01-07BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-01-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a navigation constellation inter-satellite link transceiver device time delay calibration method. The method comprises the steps of adding a bidirectional calibration channel, a medium-frequency switch matrix and a radio-frequency switch matrix on a transceiver device, conducting time-sharing control on the radio-frequency switch matrix and the medium-frequency switch matrix, sequentially enabling every two of a transmitting channel, a receiving channel and the bidirectional calibration channel to be communicated, performing closed loop time delay testing to obtain three time delay values, and finally calculating an absolute time delay Tt of the transmitting channel and an absolute time delay Tr of the receiving channel according to the three time delay values, wherein the time delay amount serves as a transceiver device time delay zero value to be substituted into inter-satellite link time delay measurement data for time delay calibration, and transceiver device time delay calibration is achieved. By means of the navigation constellation inter-satellite link transceiver device time delay calibration method, on-orbit real-time measurement of a transceiver can be achieved, and transceiver device delay calibration can be completed in a single satellite, namely the defect of static testing is avoided. In addition, compared with other dynamic methods, multi-satellite or multi-antenna participated time delay measurement work is not needed.
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Description

technical field

[0001] The invention relates to a time delay calibration method, in particular to a time delay calibration method for navigation constellation inter-satellite link transceiver equipment. Background technique

[0002] Navigation constellation autonomous navigation refers to the fact that the navigation constellation satellites continuously correct the satellite long-term forecast ephemeris injected by the ground station through inter-satellite two-way ranging, data exchange and on-board processor filtering processing when the navigation constellation satellites are not supported by the ground system for a long time and clock parameters, and independently generate navigation messages and maintain the basic configuration of the constellation to meet the user's high-precision navigation and positioning application requirements. The realization of inter-satellite precision ranging and time synchronization is one of the key technologies that determine the ultimate ...

Examples

Embodiment Construction

[0023] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] The present invention provides a method for calibrating the time delay of the transceiver equipment of the navigation constellation inter-satellite link, and the specific implementation steps are as follows figure 1 shown, including:

[0025] Step 1. Add a two-way calibration channel, an intermediate frequency switch matrix and a radio frequency switch matrix to the transceiver including the transmit channel, receive channel and baseband board to form a calibration system and calibration environment for the time delay of the transceiver equipment, so that the transmit channel, receive channels and bidirectional calibration channels are connected in parallel between the IF switch matrix and the RF switch matrix, and the baseband board is connected to the IF switch matrix, such as figure 2 shown.

[0026] Step 2. Time-sharing control of the RF swit...