Software calibration method for RDSS user receiver zero value

A receiver and user technology, applied in the field of time service, satellite navigation and positioning, can solve the problems of inaccurate calibration of the zero value of the receiver equipment, failure to calibrate the zero value in time, slow drift of the zero value, etc., to achieve application potential and economic benefits, Strong inclusiveness and the effect of improving the accuracy of system zero value calibration

Active Publication Date: 2021-08-10
AEROSPACE INFORMATION RES INST CAS
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Problems solved by technology

[0004] The purpose of the present invention is to solve the slow drift of the zero value of the RDSS user machine equipment. As time goes by, there is a certain error between the actual zero value of the user receiver and the calibrated zero value result, and the hardware zero value calibration method adopted by the user receiver end cannot be timely. For the technical problems of calibrating the zero value, and the inaccurate or uncalibrated situation of the zero value calibration of the user receiver equipment, a software calibration method for the zero value of the RDSS user receiver is provided

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  • Software calibration method for RDSS user receiver zero value

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[0030] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0031] RDSS positioning adopts four-way ranging, and the ranging signal is from the central station C-> outbound satellite S o Forwarding -> user U outbound, and then user U -> inbound satellite S i Forwarding -> Central station C inbound (see figure 2 shown), the accuracy of the four-range ranging determines the accuracy of the RDSS positioning service. The main factors affecting the accuracy of RDSS ranging include ionospheric delay, process delay, earth rotation effect, system zero value and user terminal equipment zero value, among which the user terminal equipment zero value is calibrated by the user terminal, and the system zero value Calibration is completed by the ground central station. The software calibration method of RDSS user receiver zero value that the present invention proposes is to realize the equipment zero value calibration of user...

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Abstract

The invention discloses a software calibration method for a zero value of an RDSS user receiver, wherein calibration and correction of a zero value error of a RDSS user receiver is achieved through a software calibration mode by only utilizing an existing RDSS system and a user receiver, and the positioning and bidirectional timing service precision of the RDSS user receiver can be further improved.

Description

technical field [0001] The invention belongs to the technical field of satellite navigation positioning and time service, and in particular relates to a software calibration method for the zero value of an RDSS user receiver. Background technique [0002] A major feature of the RDSS system that is different from the RNSS system is that it integrates positioning, two-way time service, one-way time service, and communication services. Another feature is that it can provide two-star positioning. Today, RDSS is still a feature of China's satellite navigation system and advantage. It has been in service since 2003 and has been in service for nearly 20 years. It is also widely used in fishery, transportation, wharf, earthquake relief, forest fire prevention, hydrological monitoring, etc., and has produced significant military, economic and social benefits. [0003] The accuracy of zero-value calibration of RDSS user receiver equipment directly affects the service performance of ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/23
CPCG01S19/235Y02D30/70
Inventor 曲江华袁洪杨光李子申
Owner AEROSPACE INFORMATION RES INST CAS
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