Unlock instant, AI-driven research and patent intelligence for your innovation.

Inter-satellite relative distance measurement device based on inter-satellite information exchange

A technology of information exchange and relative distance, applied in the field of aerospace applications, to achieve the effects of high communication rate, short development cycle, stable and reliable communication quality

Inactive Publication Date: 2009-09-09
HARBIN INST OF TECH
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these radio frequency transceiver devices rely on the GPS navigation system. At present, my country does not have a complete global coverage autonomous satellite navigation system. Therefore, the use of the GPS system is often affected by political and diplomatic factors. Too much reliance on the GPS navigation system for wartime needs and Strategic development is very unfavorable, therefore, it is necessary to develop a ranging system based on inter-satellite information exchange to complete inter-satellite relative navigation

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
  • Inter-satellite relative distance measurement device based on inter-satellite information exchange
  • Inter-satellite relative distance measurement device based on inter-satellite information exchange
  • Inter-satellite relative distance measurement device based on inter-satellite information exchange

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0009] Specific implementation mode one: the following combination figure 1 , figure 2 , image 3 Describe this embodiment, this embodiment is made up of antenna unit 1, radio frequency unit 2, field programmable gate array FPGA processor 3 and crystal oscillator 4, antenna unit 1 is made up of antenna 5, duplexer 6, power amplifier 7 and low The noise amplifier 8 is composed of, the input and output ends of the antenna 5 are connected to the transmitting and receiving ends of the duplexer 6, the output end of the duplexer 6 is connected to the input end of the low noise amplifier 8, and the input end of the duplexer 6 is connected to the output of the power amplifier 7 end; the radio frequency unit 2 is made up of a nRF2401 transmitting and forwarding radio frequency chip 9 and a plurality of nRF2401 receiving radio frequency chips 10; the field programmable gate array FPGA processor 3 is composed of a transmitting controller 11, a receiving controller 12, a parallel-serial...

specific Embodiment approach 2

[0017] Specific implementation mode two: the following combination figure 1 This embodiment is described. The difference between this embodiment and Embodiment 1 is that the antenna 5 is a helical cylindrical antenna, and the main lobe width of the antenna is 60°. Other composition and connection methods are the same as those in Embodiment 1.

[0018] The installation position of the antenna is related to the structure of the satellite body. The installation of the antenna and the ground at the same time can basically achieve full space coverage and can be used for both transmission and reception. The nRF2401 radio frequency chip is produced by Nordic. The field programmable gate array FPGA processor 3 is composed of Altera's StratixII EP2S series chips. It has functions such as frequency multiplication, control, high-precision timing, data storage, processing, conversion, and input and output. The radio frequency unit 2 completes the transmission of information and provides ...

specific Embodiment approach 3

[0019] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the inter-satellite signal transmission rate of the nRF2401 transmitting and forwarding radio frequency chip 9 and multiple nRF2401 receiving radio frequency chips 10 is 500 Kbps. Other composition and connection methods are the same as those in Embodiment 1. Kbps, also known as the unit of bit rate, refers to the transmission rate of digital signals, that is, how many thousand bits of information are transmitted per second.

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

An inter-satellite relative distance measurement device based on inter-satellite information exchange is disclosed, belonging to the field of aerospace application. The inventive aims at providing an inter-satellite information exchange-based inter-satellite relative distance measurement device which is simple in designed structure and capable of realizing relative navigation among a plurality of satellites. The invention uses an electric wire unit as a front end to accomplish the establishment of an inter-satellite link circuit with a field programmable gate array (FPGA) and a highly-integrated RF integrated nRF2401 RF chip; by means of the inter-satellite information exchange, the measurement of the inter-satellite relative distance is accomplished by utilizing time difference of record information transmitted among satellites, therefore the inter-satellite relative distance relationship can be calculated. The device is used for the measurement of the inter-satellite relative distance.

Description

technical field [0001] The invention relates to an inter-satellite relative distance measuring device based on inter-satellite information exchange, which belongs to the field of aerospace applications. Background technique [0002] With the rapid development of satellite communication technology, interstellar link has become an important key technology of satellite communication system. In the process of formation flight, due to the active, real-time and closed-loop control of multiple cooperative spacecraft in autonomous formation, formation flight requires direct control of the attitude and position of one spacecraft relative to another or many other spacecraft, and each spaceflight Therefore, the formation flight requires strict reliance on systems such as inter-satellite link communication and data transmission. It can be seen that the establishment of the inter-satellite link is the prerequisite for formation security. In addition, in the context of integration, the ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/08G01S1/02
Inventor 徐国栋孙蕊兰盛昌王峰张锦绣王继河叶东陈雪芹王松范国臣林杰
Owner HARBIN INST OF TECH