A kind of GNSS receiver state scheduling method and GNSS receiver

A state scheduling and receiver technology, applied in the field of GNSS satellite navigation, can solve the problems of increased receiver calculation consumption, reduced performance, and large calculation amount.

Active Publication Date: 2019-03-22
SHANGHAI JIAOTONG UNIV
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  • Summary
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  • Claims
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Problems solved by technology

The unit that processes satellite signals in the receiver is called a channel. When the number of channels is greater than the number of satellites, the above method is feasible. However, when the channel resources of the receiver are limited and cannot process all satellites at the same time, it will be difficult to still use this method. There are deficiencies: one situation is that some satellite signals still occupy limited channel resources after the disappearance, and the other is that the receiver will repeatedly capture invisible satellites, and the calculation of the capture process is very large, which will cause the overall calculation of the receiver Increased consumption, reduced performance

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  • A kind of GNSS receiver state scheduling method and GNSS receiver
  • A kind of GNSS receiver state scheduling method and GNSS receiver
  • A kind of GNSS receiver state scheduling method and GNSS receiver

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Embodiment approach

[0094] Aiming at the shortcomings of existing GNSS receiver designs, this embodiment provides a state scheduling method for GNSS receivers, which can realize effective processing of satellite signals in the case of limited channel resources.

[0095] In order to achieve the above object, the technical solution of the embodiment of the present invention is achieved in this way:

[0096] Maintain the satellite status table in the receiver, record the system (Beidou / GPS), serial number, health status, visibility status, occlusion status, ephemeris status, almanac status and satellite processing status of each satellite;

[0097] According to the current state of the channel and the satellite processing state in the satellite state table, determine the state transition path and determine the processing action of the receiver channel in the next processing cycle, such as image 3 shown.

[0098] According to the existing auxiliary information, select whether the start mode of a ce...

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Abstract

The invention provides a GNSS receiver and a state scheduling method thereof. The method comprises the steps that 1) a satellite state table for recording satellite state information which comprises a satellite processing state is set in the GNSS receiver; 2) one processing period is started, and a channel of the GNSS receiver works according to an initial preset state; and 3) after that the processing period is completed, the present state of the channel is detected, the initial preset state of the channel in the next processing period and the satellite processing state are determined according to the satellite state table and the present state of the channel, and the step 2) is returned to till the initial preset state of the channel in the next processing period is idle.

Description

technical field [0001] The invention relates to GNSS satellite navigation technology, in particular to a GNSS receiver state scheduling method and a GNSS receiver. Background technique [0002] At present, with the development of the GNSS global navigation satellite system, the application of satellite navigation technology is becoming more and more extensive. The satellite navigation system mainly consists of three parts, namely the space constellation segment, the ground monitoring segment and the user equipment segment, where the user equipment segment refers to the GNSS receiver. People receive satellite signals through receivers to obtain position, speed and time information. It is the most frequently contacted satellite navigation component in people's daily life. [0003] The receiver consists of three modules: acquisition, tracking and solution. The function of the capture module is to obtain the carrier frequency and code phase of the input signal. When the GNSS s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/13G01S19/24
CPCG01S19/13G01S19/24
Inventor 陈新方骁然王玉泽刘佩林郁文贤
Owner SHANGHAI JIAOTONG UNIV
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