High-precision GPS (Global Positioning System) 1pps (1 Pulse Per Second) timer and timing method of spacecraft

A pulse-per-second, high-precision technology, which is applied to the high-precision timing device of the spacecraft GPS pulse-per-second and its timing field, can solve problems such as the complexity of the interrupt processing program software system and the difficulty in meeting the requirements of high-precision timing, and achieve small Delayed, easy-to-implement, effects that meet high-precision requirements

Active Publication Date: 2013-01-09
BEIJING INST OF CONTROL ENG
View PDF4 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Interrupting the on-site protection time will inevitably take a certain amount of time, and it is difficult to meet the requirements of high-precision timing
[0007] (2) The interrupt method is used to record hardware pulse signals. As the number of pulse signals to be recorded increases, the number of interrupts required increa

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-precision GPS (Global Positioning System) 1pps (1 Pulse Per Second) timer and timing method of spacecraft
  • High-precision GPS (Global Positioning System) 1pps (1 Pulse Per Second) timer and timing method of spacecraft
  • High-precision GPS (Global Positioning System) 1pps (1 Pulse Per Second) timer and timing method of spacecraft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0031] like figure 1 The structure schematic diagram of the spacecraft GPS full-second pulse high-precision timer of the present invention is shown. It can be seen from the figure that the high-precision timer includes a pulse receiving module, a timer latch control module, a register group, a timing module and a timer.

[0032] The pulse receiving module receives the GPS full-second pulse signal and N-channel pulse signals that require high-precision time calibration, triggers the latch signal according to the rising or falling edge of the GPS full-second pulse signal and N-channel pulse signals, and converts the latch signal and The coding of one pulse signal that triggers the latch signal is output to the timer latch control module together. The one pulse signal that triggers the latch signal can be a GPS full-second pulse signal or any one ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a high-precision GPS (Global Positioning System) 1pps (1 Pulse Per Second) timer of a spacecraft. Time is recorded by a system timer according to relevant pulse signals with a hardware latch technology. For the first time, a pulse receiving module, a timer latch control module, a register block, a timing module and a timer are all utilized for timing of the pulse signals. Signal timing is realized by a hardware latch mode instead of a traditional software interrupt way. A time error is only limited to a hardware transmission error, and the hardware transmission error can be neglected in comparison to interrupt response time. The accuracy and the stability of the utilization of the GPS 1pps signal in timing are largely improved, and the requirement of the spacecraft on high precision signal timing is met.

Description

technical field [0001] The invention belongs to the technical field of spaceflight timing system, and relates to a high-precision timer of a spacecraft GPS second pulse based on a hardware latch function and a timing method thereof, which are used to realize high-precision timing of the system. Background technique [0002] GPS (Global Positioning System, Global Positioning System) is a satellite-based radio navigation and positioning system developed by the United States, which can provide various users with precise three-dimensional coordinates, speed and time, and can be used in dynamic navigation and positioning, static Surveying and mapping positioning, precise timing and time synchronization and other fields. [0003] With the development of aerospace technology, the time accuracy of satellites is required to be changed. At present, a large number of satellites start to use the GPS system to realize the high-precision timing function of each satellite subsystem with th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G04G3/00G04R20/02G04G7/00
Inventor 王跃战毅王晋鹏丁建钊陈超刘群张海彤瞿涵
Owner BEIJING INST OF CONTROL ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap