CN110376616B - GNSS and Internet of things wide area signal receiving and data processing method - Google Patents
GNSS and Internet of things wide area signal receiving and data processing method Download PDFInfo
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- CN110376616B CN110376616B CN201910779935.7A CN201910779935A CN110376616B CN 110376616 B CN110376616 B CN 110376616B CN 201910779935 A CN201910779935 A CN 201910779935A CN 110376616 B CN110376616 B CN 110376616B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
- G01S19/37—Hardware or software details of the signal processing chain
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0863—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving passwords or one-time passwords
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephonic Communication Services (AREA)
Abstract
The invention discloses a GNSS and Internet of things wide area signal receiving and data processing method, which comprises the steps of establishing two groups of signal channels, carrying out encryption conversion on a positioning information acquisition request sent by Internet of things equipment, carrying out encryption processing on positioning information, respectively receiving two groups of radio frequency signals transmitted by the GNSS, converting the two groups of radio frequency signals into corresponding intermediate frequency signals, processing by using an intermediate frequency signal processing circuit, and receiving a calculation result by using an Internet of things equipment interface circuit; according to the invention, the GNSS signals are received by utilizing the two groups of signal channels, the radio frequency signals are converted into the intermediate frequency signals, the receiving stability and the receiving speed of the wide area signals of the Internet of things can be improved, the security of receiving the wide area signals of the Internet of things can be effectively ensured by encrypting the positioning information acquisition request sent by the equipment of the Internet of things and the positioning information sent by the GNSS, and the signals are not easily and maliciously intercepted by people.
Description
Technical Field
The invention relates to the technical field of signal receiving and data processing, in particular to a GNSS and Internet of things wide area signal receiving and data processing method.
Background
The Global Navigation Satellite System (GNSS) is a space-based radio navigation positioning system which can provide all-weather three-dimensional coordinates, speed and time information for users at any place on the earth surface or near-earth space, the satellite navigation positioning technology has basically replaced the ground-based radio navigation, traditional geodetic survey and astronomical survey navigation positioning technology at present, and has promoted the brand new development of the field of geodetic survey and navigation positioning, at present, the GNSS is not only the infrastructure of national safety and economy, but also the important mark for reflecting the modernized state of the big country and the national comprehensive strength, because it has important significance in the aspects of politics, economy, military affairs and the like, the main military and the large country and the economic body of the world are competitive developing independent and independent satellite navigation systems;
with the research and application of the internet of things in various fields being popularized continuously, the network interconnection, information sharing and network nodes of the internet of things are generally dispersed at various positions, the internet of things can complete various services due to the distribution, when more and more network access devices are used, the interior of a system is more complicated, a large number of resources are consumed, when network resources or network communication are unstable, a large number of signals are still transmitted, the problems of low network utilization rate, signal receiving stability and data processing speed are caused, satellite positioning has the advantages of high accuracy and wide range, and the signal receiving stability and the data processing speed can be improved by utilizing the GNSS and the internet of things.
Disclosure of Invention
In order to solve the problems, the invention provides a GNSS and Internet of things wide area signal receiving and data processing method, two groups of signal channels are used for receiving GNSS signals, radio frequency signals are converted into intermediate frequency signals, the receiving stability and speed of the Internet of things wide area signals can be improved, and the security of receiving the Internet of things wide area signals can be effectively guaranteed by encrypting the positioning information acquisition request sent by the Internet of things equipment and the positioning information sent by the GNSS, so that the Internet of things wide area signals are not easily and maliciously intercepted by people.
The invention provides a GNSS and Internet of things wide area signal receiving and data processing method, which comprises the following steps:
the method comprises the following steps: two groups of signal channels are established between the GNSS and the Internet of things equipment, and a gain amplifier, a digital-to-analog converter and an intermediate frequency signal processing circuit are arranged in the two groups of signal channels;
step two: when receiving a positioning information acquisition request sent by the Internet of things equipment, the GNSS receives the request, and performs encryption conversion on the request to form a password source request;
step three: the GNSS encrypts the positioning information according to the password source request to obtain encrypted positioning information, and then sends the encrypted positioning information by two groups of radio frequency signals;
step four: two groups of signal channels are used for respectively receiving two groups of radio frequency signals transmitted by the GNSS, and the radio frequency signals are converted into corresponding intermediate frequency signals by using a gain amplifier and a digital-to-analog converter;
step five; the intermediate frequency signals are transmitted and sent by continuously utilizing the two groups of signal channels, and are processed by utilizing an intermediate frequency signal processing circuit in the two groups of signal channels, so that the acquisition, tracking and user position calculation of GNSS emission signals are completed;
step six: and receiving the calculation result through an interface circuit of a receiving port of the Internet of things equipment.
The further improvement lies in that: the intermediate frequency signal processing circuit in the first step further comprises an intermediate frequency compression circuit, an intermediate frequency data storage circuit, an intermediate frequency data reading circuit and an intermediate frequency data decompression circuit.
The further improvement lies in that: the specific process in the step two is as follows: when the GNSS receives a positioning information acquisition request sent by the Internet of things equipment, the request is received through a password converter embedded in the GNSS receiver in advance, and the request is subjected to encryption conversion to form a password source request.
The further improvement lies in that: and in the third step, when the encrypted positioning information is sent by two groups of radio frequency signals, firstly, the positioning information requested by the Internet of things equipment is detected, and whether the quality of the positioning information meets the sending requirement is judged.
The further improvement lies in that: and the positioning information in the third step meets the sending requirement, and the positioning information is encrypted to form encrypted positioning information and then sent by two groups of radio frequency signals.
The further improvement lies in that: and in the third step, if the positioning information does not meet the sending requirement, despreading, coherent integration and non-coherent integration operation are required to be carried out on the positioning information signals until the positioning information meets the sending requirement, encrypted positioning information is formed, and then the positioning information is sent by two groups of radio frequency signals.
The further improvement lies in that: in the fourth step, when the digital-to-analog converter is used to convert the radio frequency signal into the corresponding intermediate frequency signal, the digital-to-analog converters in the two groups of signal channels use the same sampling clock.
The further improvement lies in that: the concrete process in the step five is as follows: and the intermediate frequency signals are transmitted and sent by continuously utilizing the two groups of signal channels, are processed by utilizing the intermediate frequency signal processing circuit in the two groups of signal channels, and are processed by sequentially passing through the frequency compression circuit, the intermediate frequency data storage circuit, the intermediate frequency data reading circuit and the intermediate frequency data decompression circuit in the intermediate frequency signal processing circuit, so that the acquisition, tracking and user position calculation of the GNSS emission signals are completed.
The invention has the beneficial effects that: through utilizing two sets of signal channel to receive GNSS signals, convert radio frequency signal into intermediate frequency signal, thing networking wide area signal reception stability and rate can be improved, simultaneously the consumption can be saved, therefore, the cost is reduced, positioning information who sends request and GNSS is sent through the positioning information acquisition to thing networking equipment carries out encryption processing, the security that thing networking wide area signal received can be effectively guaranteed, be difficult for the people to be maliciously intercepting easily, carry out data processing to intermediate frequency signal through intermediate frequency signal processing circuit, can improve data processing's high efficiency, intermediate frequency signal error nature after the simultaneous processing is low, the precision is high.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
The GNSS and Internet of things wide area signal receiving and data processing method comprises the following steps:
the method comprises the following steps: two groups of signal channels are established between the GNSS and the Internet of things equipment, a gain amplifier, a digital-to-analog converter and an intermediate frequency signal processing circuit are arranged in the two groups of signal channels, and the intermediate frequency signal processing circuit also comprises an intermediate frequency compression circuit, an intermediate frequency data storage circuit, an intermediate frequency data reading circuit and an intermediate frequency data decompression circuit;
step two: when the GNSS receives a positioning information acquisition request sent by the Internet of things equipment, the request is received through a password converter embedded in the GNSS receiver in advance, and the request is subjected to encryption conversion to form a password source request;
step three: the GNSS encrypts the positioning information according to the request of the password source to obtain encrypted positioning information, then sends the encrypted positioning information as two groups of radio frequency signals, when the encrypted positioning information is sent as two groups of radio frequency signals, firstly detects the positioning information requested by the equipment of the Internet of things, judges whether the quality of the positioning information meets the sending requirement, sends the positioning information as two groups of radio frequency signals, encrypts the positioning information to form encrypted positioning information, and then sends the encrypted positioning information as two groups of radio frequency signals, wherein the positioning information does not meet the sending requirement, and needs to perform de-spreading, coherent integration and noncoherent integration operation on the positioning information signals until the positioning information meets the sending requirement, and then sends the encrypted positioning information as two groups of radio frequency signals;
step four: two groups of signal channels are used for respectively receiving two groups of radio frequency signals transmitted by the GNSS, the radio frequency signals are converted into corresponding intermediate frequency signals by using a gain amplifier and a digital-to-analog converter, and the digital-to-analog converters in the two groups of signal channels use the same sampling clock;
step five; the intermediate frequency signals are transmitted and sent by continuously utilizing the two groups of signal channels, and are processed by utilizing an intermediate frequency signal processing circuit in the two groups of signal channels, the intermediate frequency signals are processed by a frequency compression circuit, an intermediate frequency data storage circuit, an intermediate frequency data reading circuit and an intermediate frequency data decompression circuit in the intermediate frequency signal processing circuit in sequence, and the acquisition, tracking and user position calculation of GNSS emission signals are completed;
step six: and receiving the calculation result through an interface circuit of a receiving port of the Internet of things equipment.
Through utilizing two sets of signal channel to receive GNSS signals, convert radio frequency signal into intermediate frequency signal, thing networking wide area signal reception stability and rate can be improved, simultaneously the consumption can be saved, therefore, the cost is reduced, positioning information who sends request and GNSS is sent through the positioning information acquisition to thing networking equipment carries out encryption processing, the security that thing networking wide area signal received can be effectively guaranteed, be difficult for the people to be maliciously intercepting easily, carry out data processing to intermediate frequency signal through intermediate frequency signal processing circuit, can improve data processing's high efficiency, intermediate frequency signal error nature after the simultaneous processing is low, the precision is high.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
- The GNSS and Internet of things wide area signal receiving and data processing method is characterized by comprising the following steps:the method comprises the following steps: two groups of signal channels are established between the GNSS and the Internet of things equipment, and a gain amplifier, a digital-to-analog converter and an intermediate frequency signal processing circuit are arranged in the two groups of signal channels; the intermediate frequency signal processing circuit also comprises an intermediate frequency compression circuit, an intermediate frequency data storage circuit, an intermediate frequency data reading circuit and an intermediate frequency data decompression circuit;step two: when receiving a positioning information acquisition request sent by the Internet of things equipment, the GNSS receives the request, and performs encryption conversion on the request to form a password source request; when the GNSS receives a positioning information acquisition request sent by the Internet of things equipment, the request is received through a password converter embedded in the GNSS receiver in advance, and the request is subjected to encryption conversion to form a password source request;step three: the GNSS encrypts the positioning information according to the password source request to obtain encrypted positioning information, and then sends the encrypted positioning information by two groups of radio frequency signals; when the encrypted positioning information is sent by two groups of radio frequency signals, firstly, the positioning information requested by the Internet of things equipment is detected, and whether the quality of the positioning information meets the sending requirement is judged; the positioning information accords with the sending requirement, and the positioning information is encrypted to form encrypted positioning information and then sent by two groups of radio frequency signals; if the positioning information does not meet the sending requirement, despreading, coherent integration and noncoherent integration operation are required to be carried out on the positioning information signals until the positioning information meets the sending requirement, encrypted positioning information is formed, and then the encrypted positioning information is sent by two groups of radio frequency signals;step four: two groups of signal channels are used for respectively receiving two groups of radio frequency signals transmitted by the GNSS, and the radio frequency signals are converted into corresponding intermediate frequency signals by using a gain amplifier and a digital-to-analog converter;step five; the intermediate frequency signals are transmitted and sent by continuously utilizing the two groups of signal channels, and are processed by utilizing an intermediate frequency signal processing circuit in the two groups of signal channels, so that the acquisition, tracking and user position calculation of GNSS emission signals are completed;step six: and receiving the calculation result through an interface circuit of a receiving port of the Internet of things equipment.
- 2. The GNSS and Internet of things wide area signal receiving and data processing method as claimed in claim 1, wherein: in the fourth step, when the digital-to-analog converter is used to convert the radio frequency signal into the corresponding intermediate frequency signal, the digital-to-analog converters in the two groups of signal channels use the same sampling clock.
- 3. The GNSS and Internet of things wide area signal receiving and data processing method as claimed in claim 1, wherein: the concrete process in the step five is as follows: and the intermediate frequency signals are transmitted and sent by continuously utilizing the two groups of signal channels, are processed by utilizing the intermediate frequency signal processing circuit in the two groups of signal channels, and are processed by sequentially passing through the frequency compression circuit, the intermediate frequency data storage circuit, the intermediate frequency data reading circuit and the intermediate frequency data decompression circuit in the intermediate frequency signal processing circuit, so that the acquisition, tracking and user position calculation of the GNSS emission signals are completed.
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Citations (3)
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| CN103399329A (en) * | 2013-08-20 | 2013-11-20 | 中国科学院微电子研究所 | GNSS (global navigation satellite system) receiver and intermediate frequency data processing method thereof |
| CN105988126A (en) * | 2015-02-15 | 2016-10-05 | 潍坊果壳视界信息科技有限公司 | Multi-mode satellite navigation module applied in field of agricultural internet of things |
| CN107820253A (en) * | 2016-09-13 | 2018-03-20 | 网络性能研究集团有限责任公司 | Simultaneously using the method and apparatus of multiple channels in dynamic frequency selection frequency range in wireless network |
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| US10419877B2 (en) * | 2015-10-07 | 2019-09-17 | Samsung Electronics Co., Ltd. | Electronic apparatus and IoT device controlling method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399329A (en) * | 2013-08-20 | 2013-11-20 | 中国科学院微电子研究所 | GNSS (global navigation satellite system) receiver and intermediate frequency data processing method thereof |
| CN105988126A (en) * | 2015-02-15 | 2016-10-05 | 潍坊果壳视界信息科技有限公司 | Multi-mode satellite navigation module applied in field of agricultural internet of things |
| CN107820253A (en) * | 2016-09-13 | 2018-03-20 | 网络性能研究集团有限责任公司 | Simultaneously using the method and apparatus of multiple channels in dynamic frequency selection frequency range in wireless network |
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Denomination of invention: Wide area signal receiving and data processing method between GNSS and Internet of things Effective date of registration: 20220429 Granted publication date: 20220211 Pledgee: Yingtan industrial control Financing Guarantee Co.,Ltd. Pledgor: JIANGXI WATTECH ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2022980005030 |
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Date of cancellation: 20230410 Granted publication date: 20220211 Pledgee: Yingtan industrial control Financing Guarantee Co.,Ltd. Pledgor: JIANGXI WATTECH ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2022980005030 |
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