CN105846942A - Non-cooperative burst communication signal interception system and interception method - Google Patents
Non-cooperative burst communication signal interception system and interception method Download PDFInfo
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- CN105846942A CN105846942A CN201610364202.3A CN201610364202A CN105846942A CN 105846942 A CN105846942 A CN 105846942A CN 201610364202 A CN201610364202 A CN 201610364202A CN 105846942 A CN105846942 A CN 105846942A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
- H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2657—Carrier synchronisation
- H04L27/2659—Coarse or integer frequency offset determination and synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/005—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by adjustment in the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/06—Airborne or Satellite Networks
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- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention relates to a non-cooperative burst communication signal interception system and an interception method. The interception system comprises a signal receiving unit, an operation unit, a control unit and a data storage unit, wherein the operation unit is used for processing a system data operation task; the signal receiving unit is used for receiving signals of a communication system under control of the control unit; the storage unit is used for storing a burst plan of the communication system, and the burst plan comes from communication signaling; the operation unit generates a control instruction according to the burst plan and inputs the control instruction into the control unit; and the control unit is used for controlling a timing mode of the signal receiving unit according to the control instruction so as to receive burst signal in a segmented manner. Compared with a traditional energy detection mode, the signal interception system and the signal interception method provided by the invention solve a deficiency that different bursts cannot be differentiated by the system through the energy mode because the burst interval is short in the energy detection mode, and thus signals carried in the bursts cannot be extracted and analyzed.
Description
Technical field
The present invention relates to technical field of satellite communication, be specifically related to one with non-approach to cooperation to satellite communication
Middle burst communication signals carries out computer system and the one signal intercept method intercepted.
Background technology
Satellite communication, compared with other communication modes, has a feature of the following aspects: 1. communication distance
Far, and expense is unrelated with communication distance.Utilizing fixed statellite, it is left that maximum communication distance reaches 18100km
Right.And build a station expense and operating cost be not because of between the distance between communication station, two communication stations
The severe degree of natural conditions on face and change.This is in telecommunication, than microwave relay, cable,
Optical cable, short wave communication have obvious advantage.2. broadcast mode work, can carry out multiple access communication.Generally,
Other kinds of means of communication can only realize point-to-point communication, and satellite is operated with broadcast mode,
Any point in the whole region of satellite antenna wave cover can arrange earth station, these earth
Stand and can share a telecommunication satellite to realize bilateral or multilateral communication, i.e. carry out multiple access communication.It addition, one
Satellite in orbit, be equivalent to have laid in certain area can arrive any point without several invisible electricity
Road, it is the composition of communication network, it is provided that high efficiency and motility.3. message capacity is big, is suitable for many
The transmission of the business of kind.Satellite communication use microwave frequency band, it is possible to use frequency band the widest.General C and Ku frequency
The satellite bandwidth of section is up to 500～800MHz, and Ka frequency range is up to several GHz.4. can be with internal loopback
It is monitored.Typically, transmitting end earth station equally receives the signal oneself sent, such that it is able to
Monitor that our station institute messaging is the most correct, and the quality of transmission quality.5. seamless coverage ability.Utilize
Satellite mobile communication, can not be limited by geographical environment, weather conditions and time, be set up covering the whole world
The sea, land and sky integrated communication system of property.6. wide area complex network topologies constitutes ability.Satellite communication
High power density with multidrop beam ability flexibly plus Onboard switching treatment technology, can be by excellent valency
Lattice performance constitutes energy than point-to-point Yu the multi-multipoint complicated network topology providing broad territorial scope
Power.7. security reliability.Fact proved, when in the face of the fault of earthquake relief work or international seabed/optical cable,
Satellite communication is a kind of unrivaled important communication means.Even if having in the future more perfect spontaneous recovery backup or
Routeing roundabout land optical cable and submarine optical fiber cable network, wise network planner is still able to designer
Understand important as transmission medium emergency backup and information superhighway hybrid network basic link of satellite communication
Property and necessity.
In a communications system, cooperative communication refers to communicating pair or in many ways carries out according to set protocol rule
Communication, non-cooperative communication is then not know about or imperfectly understanding communication system communication rule on the other hand
On the premise of then, and force to get involved communication system in the case of cooperative communication side is undelegated, it is common that right
In system, the communication information intercepts.And for the burst in satellite communication signals, tradition is non-
Cooperative communication mode is usually taken the mode of activated with energy to the intercepting of information, i.e. systems stay detection from
The signal of satellite system, when burst being detected (energy enhancing), system starts to record data,
Meanwhile, system operations unit carries out load (content) to the system data of record and resolves, to obtain
Information content.But, due to the development of communication technology, in satellite communication multiple bursts of burst it
Between time interval shorter and shorter, the difference of burst is more and more less, causes in the way of energy measuring
It is difficult to distinguish different bursts, and, cause can't detect knot when recording a certain burst
Restraint the moment and cause information misregistration, ultimately result in and cannot resolve.
Summary of the invention
It is an object of the invention to provide a kind of non-cooperation burst communication signals intercepting system and intercept method,
In order to the problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme: a kind of non-cooperation burst communication signals
Intercepting system, it is characterised in that include that signal receiving unit, arithmetic element, control unit and data are deposited
Storage unit；Arithmetic element, for processing system data operation task；Signal receiving unit, in control
Communication system signal is received under the control of unit processed；Memory element, is used for storing communication system burst plan,
Described burst plan comes from communication signaling；Arithmetic element generates control instruction according to burst plan and inputs extremely
Control unit；Control unit, connects for receiving unit timing mode segmentation according to control instruction control signal
Receive burst.
Preferred version, the data that described signal receiving unit receives include satellite communication system broadcast data,
Described broadcast data is for extracting the communication signaling of described communication system.
Preferred version, the concrete grammar that arithmetic element generates control instruction according to burst plan is: extract prominent
Send out generation and the finish time information of plan, generate control instruction according to described time information, to control letter
Number receiving unit is being not later than when secondary burst occurs unlatching, and is being no earlier than when secondary burst terminates to be no earlier than
Close when lower secondary burst arrives.
Preferred version, there is the time interval in moment when secondary burst in the moment distance that signal receiving unit is opened
For the transmission duration that t0, t0 are described communication system 5-20 character.
Preferred version, the moment distance that signal receiving unit is closed is when the time interval of secondary burst finish time
For the transmission duration that t1, t1 are described communication system 5-20 character.
Preferred version, system includes signal resolution unit, and described signal resolution unit is for prominent by obtain
Signalling resolves to recognizable information.
Preferred version, described signal resolution unit processes the burst from signal receiving unit in a parallel fashion
Signal.
A kind of non-cooperation burst communication signals intercept method, it is characterised in that comprise the following steps:
A, acquisition communication system burst plan；
B, according to burst plan generate control instruction, for the control system reception to burst data；
C, the burst data received are distributed to signal resolution unit carry out signal resolution process.
Preferred version, the concrete grammar of step a is:
A1, from satellite communication system downlink broadcast data, obtain data stream, and extract from data stream and defend
Star communication signaling；
A2, acquisition communication system burst plan from signaling.
Compared with prior art, the invention has the beneficial effects as follows: the one non-cooperation burst communication of the present invention
Signal intercepting system and intercept method, compared with conventional energy detection mode, solve energy measuring mode
In due to burst interval shorter, system can not tell different burst by energy mode, and then cannot be right
In burst, the signal of carrying carries out the deficiency of extraction and analysis.It is to use root that the present invention solves the scheme of this problem
Obtain burst plan according to system descending broadcast singal and generate control instruction, and connect by control instruction control signal
Receive unit and carry out active intercepting and the classification of burst.Improve the accuracy that signal intercepts.
Accompanying drawing explanation
Fig. 1 is the non-cooperation burst communication signals intercepting system structured flowchart of the embodiment of the present invention；
Fig. 2 is the non-cooperation burst communication signals intercept method schematic flow sheet of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
As shown in Figures 1 and 2, the preferred embodiments of the present invention are as follows:
A kind of non-cooperation burst communication signals intercepting system, including signal receiving unit, arithmetic element, control
Unit processed and data storage cell；Arithmetic element, for processing system data operation task；Signal receives
Unit, for receiving communication system signal under the control of the control unit；Memory element, is used for storing logical
Communication system burst plan, described burst plan comes from communication signaling；Arithmetic element is raw according to burst plan
Control instruction is become to input to control unit；Control unit, single for receiving according to control instruction control signal
Unit's timing mode subsection receiing burst.Wherein, control unit receives according to control instruction control signal
The major advantage of unit timing mode subsection receiing burst is, solves conventional energy and triggers reception
The mode of signal triggers the problem that signal is difficult to detection (or time interval is short, or energy value is not enough).And
And, the burst of timing mode subsection receiing is conducive to being processed by parallel mode, improves at signal
The efficiency of reason.
Preferred embodiment scheme, the data that described signal receiving unit receives include that satellite communication system is broadcasted
Data, described broadcast data is for extracting the communication signaling of described communication system.Due to downlink broadcast data
Belong to open type data, easily obtain, as long as and can obtain according to downlink broadcast data acquisition burst plan
Know the protocol mode that system uses, it is possible to easy must obtain system burst plan.
Preferred embodiment scheme, the concrete grammar that arithmetic element generates control instruction according to burst plan is:
Extract generation and the finish time information of burst plan, generate control instruction according to described time information, with
Control signal receives unit and is being not later than the unlatching when secondary burst occurs, and is being no earlier than when secondary burst terminates
It is no earlier than when lower secondary burst arrives and closes.Suitably widen the scope to data cutout and can improve data cutout
Accuracy.
Preferred embodiment scheme, the moment distance that signal receiving unit is opened is when there is the moment in secondary burst
Between be spaced apart the transmission duration that t0, t0 are described communication system 5-20 character.Generally with ten characters
Effect is preferable.
Preferred embodiment scheme, the moment distance that signal receiving unit is closed is when secondary burst finish time
Between be spaced apart the transmission duration that t1, t1 are described communication system 5-20 character.Generally with ten characters
Effect is preferable.
Preferred embodiment scheme, system includes signal resolution unit, and described signal resolution unit will be for obtaining
The burst taken resolves to recognizable information.
Preferred embodiment scheme, described signal resolution unit processes in a parallel fashion from signal receiving unit
Burst.
A kind of non-cooperation burst communication signals intercept method, comprises the following steps:
A, acquisition communication system burst plan；
B, according to burst plan generate control instruction, for the control system reception to burst data；
C, the burst data received are distributed to signal resolution unit carry out signal resolution process.
Preferred version, the concrete grammar of step a is:
A1, from satellite communication system downlink broadcast data, obtain data stream, and extract from data stream and defend
Star communication signaling；
A2, acquisition communication system burst plan from signaling.
Main innovation point is, 1., abandoning tradition energy measuring intercepts and captures burst and differentiation burst occurs
And the mode of finish time (time interval of burst plan), by the parsing of downlink broadcast signaling is obtained
Obtain uplink burst plan, judge that burst occurs and terminates according to signals such as burst plan, system clocks
Moment, with time shaft for according to obtaining burst；2., conventionally employed directly acquisition from upward signal
Burst, the system of this programme is with parsing downlink broadcast signaling as foundation, and system constitutes variant；③、
When intercepting burst, proper extension before and after the burst plan generation moment point that will obtain from signaling, with
The signal accuracy rate making acquisition is higher；4., by the multiple bursts obtained it is sent to system and processes rear end,
Parallel processing can be carried out.
Although an embodiment of the present invention has been shown and described, for those of ordinary skill in the art
Speech, it is possible to understand that these embodiments can be carried out without departing from the principles and spirit of the present invention
Multiple change, revising, replace and modification, the scope of the present invention is limited by claims and equivalent thereof
Fixed.
Claims (9)
1. a non-cooperation burst communication signals intercepting system, it is characterised in that include signal receiving unit,
Arithmetic element, control unit and data storage cell；Arithmetic element, appoints for processing system data operation
Business；Signal receiving unit, for receiving communication system signal under the control of the control unit；Memory element,
For storing communication system burst plan, described burst plan comes from communication signaling；Arithmetic element according to
Burst plan generates control instruction and inputs to control unit；Control unit, for according to control instruction control
Signal receiving unit timing mode subsection receiing burst.
One the most according to claim 1 non-cooperation burst communication signals intercepting system, its feature exists
In, the data that described signal receiving unit receives include satellite communication system broadcast data, described broadcast number
According to the communication signaling for extracting described communication system.
One the most according to claim 1 and 2 non-cooperation burst communication signals intercepting system, it is special
Levying and be, the concrete grammar that arithmetic element generates control instruction according to burst plan is: extract burst plan
Generation and finish time information, according to described time information generate control instruction, with control signal receive
Unit is being not later than the unlatching when secondary burst occurs, and dashes forward when secondary burst terminates to be no earlier than next time being no earlier than
Close when being dealt into.
4. according to the one non-cooperation burst communication signals described in any one claim of claim 1-3
Intercepting system, it is characterised in that the moment distance that signal receiving unit is opened occurs the moment when secondary burst
Time interval be t0, t0 be the transmission duration of described communication system 5-20 character.
5. according to the one non-cooperation burst communication signals described in any one claim of claim 1-3
Intercepting system, it is characterised in that the moment distance that signal receiving unit is closed is when secondary burst finish time
Time interval be t1, t1 be the transmission duration of described communication system 5-20 character.
One the most according to claim 1 non-cooperation burst communication signals intercepting system, its feature exists
In, system includes signal resolution unit, and described signal resolution unit resolves for the burst that will obtain
For recognizable information.
One the most according to claim 1 non-cooperation burst communication signals intercepting system, its feature exists
In, described signal resolution unit processes the burst from signal receiving unit in a parallel fashion.
8. a non-cooperation burst communication signals intercept method, it is characterised in that comprise the following steps:
A, acquisition communication system burst plan；
B, according to burst plan generate control instruction, for the control system reception to burst data；
C, the burst data received are distributed to signal resolution unit carry out signal resolution process.
One the most according to claim 8 non-cooperation burst communication signals intercepting system, its feature exists
In, the concrete grammar of step a is:
A1, from satellite communication system downlink broadcast data, obtain data stream, and extract from data stream and defend
Star communication signaling；
A2, acquisition communication system burst plan from signaling.
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| CN201610364202.3A CN105846942A (en) | 2016-05-26 | 2016-05-26 | Non-cooperative burst communication signal interception system and interception method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710572A (en) * | 2012-07-06 | 2012-10-03 | 江苏省邮电规划设计院有限责任公司 | Feature extraction and modulation identification method of communication signals |
| WO2012163052A1 (en) * | 2011-11-15 | 2012-12-06 | 华为技术有限公司 | Method and apparatus for equalizing channel of passive optical network |
| CN102883374A (en) * | 2012-10-15 | 2013-01-16 | 航天恒星科技有限公司 | Resource distribution method for satellite communication system |
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- 2016-05-26 CN CN201610364202.3A patent/CN105846942A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012163052A1 (en) * | 2011-11-15 | 2012-12-06 | 华为技术有限公司 | Method and apparatus for equalizing channel of passive optical network |
| CN102710572A (en) * | 2012-07-06 | 2012-10-03 | 江苏省邮电规划设计院有限责任公司 | Feature extraction and modulation identification method of communication signals |
| CN102883374A (en) * | 2012-10-15 | 2013-01-16 | 航天恒星科技有限公司 | Resource distribution method for satellite communication system |
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Application publication date: 20160810 |
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