CN111917499A - Black broadcast signal acquisition method and system - Google Patents
Black broadcast signal acquisition method and system Download PDFInfo
- Publication number
- CN111917499A CN111917499A CN202010863834.0A CN202010863834A CN111917499A CN 111917499 A CN111917499 A CN 111917499A CN 202010863834 A CN202010863834 A CN 202010863834A CN 111917499 A CN111917499 A CN 111917499A
- Authority
- CN
- China
- Prior art keywords
- acquisition
- frequency point
- synchronous
- scanning
- nodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/12—Arrangements for observation, testing or troubleshooting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/29—Arrangements for monitoring broadcast services or broadcast-related services
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The application provides a black broadcast signal acquisition method and a system, wherein the method comprises the following steps: a synchronous acquisition plan of the current round is formulated according to a plurality of effective frequency points obtained from a plurality of acquisition nodes; the synchronous acquisition plan is transmitted to the plurality of acquisition nodes, the plurality of acquisition nodes are controlled to synchronously acquire the black broadcast signal data in a time-sharing mode according to the synchronous acquisition plan until the acquisition of the black broadcast signal data in the current round is completed, a large amount of acquisition equipment can be deployed by the single-channel acquisition nodes which are simple and low in cost, and the large amount of deployment and wide application can be realized on the premise that only a small amount of cost is increased.
Description
Technical Field
The application relates to the technical field of signal acquisition, in particular to a black broadcast signal acquisition method and system.
Background
The black broadcast refers to an illegal broadcasting station which is not approved by radio and television administrative departments and radio management departments and is set up privately, and the black broadcast is mainly used for commercial activities such as illegal drug and fake drug sales promotion, and brings great harm to the society. In addition, the 'black broadcasting' illegally erected by private people appears in large numbers nationwide, and great threat can be caused to aviation safety. Therefore, fast and accurate monitoring and finding of black broadcasting is of great significance to radio spectrum order management.
The black broadcast signal data acquisition is the basis and precondition of black broadcast monitoring, and in order to realize a series of black broadcast monitoring functions such as black broadcast signal coverage analysis, black broadcast signal consistency analysis and black broadcast detection, the broadcast signal data of each acquisition node needs to be acquired. In the prior art, in order to rapidly receive and transmit broadcast signal data acquired by a plurality of acquisition nodes, acquisition equipment and processing equipment with high cost are generally adopted, so that the cost of a black broadcast signal acquisition system is high, and the black broadcast signal acquisition system is not beneficial to popularization.
Disclosure of Invention
The application aims to provide a black broadcast signal acquisition method and system, which are used for effectively overcoming the technical defects of high cost and difficulty in wide popularization and application in the prior art.
In a first aspect, an embodiment of the present application provides a black broadcast signal acquisition method, where the method includes: a synchronous acquisition plan of the current round is formulated according to a plurality of effective frequency points obtained from a plurality of acquisition nodes; and transmitting the synchronous acquisition plan to a plurality of acquisition nodes, and controlling the plurality of acquisition nodes to synchronously acquire the black broadcast signal data in a time-sharing manner according to the synchronous acquisition plan until the acquisition of the black broadcast signal data of the current round is completed.
With reference to the first aspect, in a first possible implementation manner, formulating a synchronous acquisition plan of a current round according to a plurality of effective frequency points obtained from a plurality of acquisition nodes includes: setting the collection number of the frequency points in the current round, the first collection duration of the black broadcast signal data corresponding to each frequency point and an initial collection frequency point, wherein the initial collection frequency point is a collection termination frequency point of the previous round; based on the obtained multiple effective frequency points, obtaining a first list consisting of multiple first data, wherein the first data comprises: the effective frequency points and the numbers of the collection nodes; grouping the first list according to the effective frequency points, determining the number of at least one acquisition node corresponding to the effective frequency points as a same group, and acquiring a plurality of groups of second data; sequencing multiple groups of second data according to the numerical value of the effective frequency point to obtain an ordered second list consisting of multiple groups of second data; and formulating a synchronous acquisition plan of the current round based on the ordered second list.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, the formulating the synchronous acquisition plan of the current round based on the ordered second list includes: setting the initial acquisition time of the current round, wherein the initial acquisition time is later than the current time; determining the frequency point of which the ith effective frequency point is larger than the initial acquisition frequency point in the ordered second list as the ith frequency point which starts synchronous acquisition in the current round, wherein i is an integer, and the initial value of i is 1; based on the number of at least one acquisition node corresponding to the ith frequency point which starts synchronous acquisition, generating a synchronous acquisition node group which is formed by at least one synchronous acquisition node corresponding to the number one to one and an acquisition time timei of the ith frequency point which starts synchronous acquisition, wherein the calculation formula of the acquisition time timei is as follows: adding the product of the first acquisition time length and i-1 to the initial acquisition time; judging whether the number i of the frequency points acquired synchronously in the current round is equal to the number of the frequency points acquired in the current round, if not, determining the frequency point with the (i + 1) th effective frequency point larger than the initial acquisition frequency point in the ordered second list as the frequency point which starts synchronous acquisition in the current round, circulating the steps until the number of the frequency points acquired synchronously in the current round is equal to the number of the frequency points acquired in the current round, generating a synchronous acquisition plan, and recording the last effective frequency point in the current round as the initial acquisition frequency point in the next round.
With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner, transmitting a synchronous acquisition plan to multiple acquisition nodes, and controlling multiple nodes to synchronously acquire black broadcast signal data in a time-sharing manner according to the synchronous acquisition plan includes: and issuing a synchronous acquisition plan to a plurality of acquisition nodes, wherein the synchronous acquisition plan is expressed in a file form, and the file form comprises: synchronously acquiring a frequency point, the acquisition time timei and a synchronous acquisition node group; and each acquisition node reads the synchronous acquisition plan, inquires the acquisition node in the synchronous acquisition node group corresponding to the synchronously acquired frequency point, and acquires black broadcast signal data according to the acquisition time timei corresponding to the synchronously acquired frequency point.
With reference to the first aspect, in a fourth possible implementation manner, before making a synchronous acquisition plan of the current round according to effective frequency point information corresponding to a plurality of obtained black broadcast signal data, the method further includes: control center sends frequency point acquisition time instruction respectively to a plurality of collection node for when frequency point acquisition time instruction is effective state, carry out effective communication between control center and a plurality of collection node, wherein, frequency point acquisition time instruction includes: a start time, a second acquisition duration, and an end time.
With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, after the control center sends the frequency point acquisition time instruction to the plurality of acquisition nodes, before the method makes a synchronous acquisition plan of the current round according to the obtained effective frequency point information corresponding to the plurality of black broadcast signal data, the method further includes: the method comprises the steps that a plurality of acquisition nodes are respectively provided with an initial scanning frequency point and a termination scanning frequency point, and a scanning frequency band between the initial scanning frequency point and the termination scanning frequency point is divided into M continuous scanning sub-bands, wherein the termination scanning sub-frequency point of the M-1 th scanning sub-band is the initial scanning sub-frequency point of the Mth scanning sub-band, the initial scanning sub-frequency point of the first scanning sub-band is the initial scanning frequency point, and M is an integer greater than 1; scanning and collecting each scanning sub-frequency band for multiple times within a first preset time length so as to gather energy carried by the scanning sub-frequency bands and improve the signal-to-noise ratio; extracting local frequency point maximum value after energy aggregation carried by each scanning sub-frequency band; and judging whether the maximum value of each local frequency point is greater than a preset threshold value, if so, determining the maximum value of the local frequency point as an effective frequency point, and obtaining a plurality of effective frequency points.
With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, after determining whether each local frequency point maximum is greater than a preset threshold, and if so, determining the local frequency point maximum as an effective frequency point, the method further includes: judging whether the time length between the current time and the termination time in the frequency point acquisition time instruction is less than a second preset time length, if so, stopping scanning and acquiring; if not, judging whether the scanning acquisition of the M scanning sub-frequency bands is finished, if so, stopping the scanning acquisition; and if not, scanning and collecting the next scanning sub-frequency band.
In a second aspect, an embodiment of the present application provides a black broadcast signal acquisition system, which includes: the control center is used for making a synchronous acquisition plan of the current round according to a plurality of effective frequency points obtained from a plurality of acquisition nodes; the synchronous acquisition plan is transmitted to the plurality of acquisition nodes, and the plurality of acquisition nodes are controlled to synchronously acquire the black broadcast signal data in a time-sharing manner according to the synchronous acquisition plan until the acquisition of the black broadcast signal data of the current round is completed; the system comprises a plurality of acquisition nodes, a plurality of communication nodes and a plurality of communication nodes, wherein the acquisition nodes are used for acquiring a plurality of effective frequency points; and the synchronous acquisition system is also used for receiving and reading the synchronous acquisition plan and realizing the time-sharing synchronous acquisition of the black broadcast signal data.
Compared with the prior art, the beneficial effects of the embodiment of the application are as follows: the black broadcast signal acquisition system in the embodiment of the present application includes: a control center and a plurality of collection nodes. The acquisition node is signal receiving equipment with a single channel; the control center collaboratively acquires the signal data of the same frequency point in the same time period through the formulated synchronous acquisition plan, and realizes unified scheduling of a plurality of acquisition nodes. The acquisition node in the system uses a simple and low-cost single-channel acquisition end, and can perform distributed cooperative acquisition under the scheduling of a control center. The simple and low-cost single-channel acquisition end can enable acquisition equipment to be deployed in large quantity, and is favorable for realizing large-quantity deployment and wide application on the premise of only increasing a small amount of cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic flowchart of a black broadcast signal acquisition method according to an embodiment of the present disclosure;
fig. 2 is a block diagram of a black broadcast signal acquisition system according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a black broadcast signal acquisition method according to an embodiment of the present disclosure. In an embodiment of the present application, a black broadcast signal acquisition method includes: step S11 and step S12.
Step S11: a synchronous acquisition plan of the current round is formulated according to a plurality of effective frequency points obtained from a plurality of acquisition nodes;
step S12: and transmitting the synchronous acquisition plan to a plurality of acquisition nodes, and controlling the plurality of acquisition nodes to synchronously acquire the black broadcast signal data in a time-sharing manner according to the synchronous acquisition plan until the acquisition of the black broadcast signal data of the current round is completed.
The flow of the method will be described in detail below.
Prior to step S11, the method includes: control center sends frequency point acquisition time instruction respectively to a plurality of collection node for when frequency point acquisition time instruction is effective state, carry out effective communication between control center and a plurality of collection node, wherein, frequency point acquisition time instruction includes: a start time, a second acquisition duration, and an end time. In an embodiment of the application, the second acquisition time period is adjustable, optionally set to 5 minutes.
Following the general rule of signal receivers at the acquisition nodes, each frequency point scanning can only be performed in a small frequency band interval, and thus the frequency point scanning is relatively accurate. Therefore, segmented scanning is required, and finally, scanning of all broadcast channel frequency points is spliced.
In detail, a plurality of acquisition nodes are respectively provided with an initial scanning frequency point and a termination scanning frequency point, and the scanning frequency band between the initial scanning frequency point and the termination scanning frequency point is divided into M continuous scanning sub-bands, the termination scanning sub-frequency point of the M-1 th scanning sub-band is the initial scanning sub-frequency point of the Mth scanning sub-band, the initial scanning sub-frequency point of the first scanning sub-band is the initial scanning frequency point, wherein M is an integer greater than 1; scanning and collecting each scanning sub-frequency band for multiple times within a first preset time length so as to gather energy carried by the scanning sub-frequency bands and improve the signal-to-noise ratio; extracting local frequency point maximum value after energy aggregation carried by each scanning sub-frequency band; and judging whether the maximum value of each local frequency point is greater than a preset threshold value, if so, determining the maximum value of the local frequency point as an effective frequency point, and obtaining a plurality of effective frequency points.
After judging whether each local frequency point maximum is larger than a preset threshold value, if so, determining the local frequency point maximum as an effective frequency point, and the method further comprises the following steps: judging whether the time length between the current time and the termination time in the frequency point acquisition time instruction is less than a second preset time length, if so, stopping scanning and acquiring; if not, judging whether the scanning acquisition of the M scanning sub-frequency bands is finished, if so, stopping the scanning acquisition; and if not, scanning and collecting the next scanning sub-frequency band. When the time is close to the frequency point scanning ending time formulated by the control center, the frequency point scanning is stopped; and when all the appointed frequency bands are scanned, the scanning is also stopped. After the scanning is completed, the scanning data is submitted to the control center, and the format is a list taking (s _ id, fre) as an element. Wherein s _ id represents the id of the acquisition node, and fre is the frequency point
It should be noted that, in the embodiment of the present application, only one acquisition channel exists in a single acquisition node, and therefore, frequency point scanning and broadcast audio data recording in the single acquisition node are serial processes.
Step S11: and formulating the synchronous acquisition plan of the current round according to a plurality of effective frequency points obtained from a plurality of acquisition nodes.
In detail, the acquisition number of the frequency points in the current round, the first acquisition duration of the black broadcast signal data corresponding to each frequency point and an initial acquisition frequency point are set, wherein the initial acquisition frequency point is a termination acquisition frequency point of the previous round of acquisition; based on the obtained multiple effective frequency points, obtaining a first list consisting of multiple first data, wherein the first data comprises: the effective frequency points and the numbers of the collection nodes; grouping the first list according to the effective frequency points, determining the number of at least one acquisition node corresponding to the effective frequency points as a same group, and acquiring a plurality of groups of second data; sequencing multiple groups of second data according to the numerical value of the effective frequency point to obtain an ordered second list consisting of multiple groups of second data; and formulating a synchronous acquisition plan of the current round based on the ordered second list.
Formulating the synchronized acquisition plan for the current round based on the ordered second list, comprising: setting the initial acquisition time of the current round, wherein the initial acquisition time is later than the current time; determining the frequency point of which the ith effective frequency point is larger than the initial acquisition frequency point in the ordered second list as the ith frequency point which starts synchronous acquisition in the current round, wherein i is an integer, and the initial value of i is 1; based on the number of at least one acquisition node corresponding to the ith frequency point which starts synchronous acquisition, generating a synchronous acquisition node group which is formed by at least one synchronous acquisition node corresponding to the number one to one and an acquisition time timei of the ith frequency point which starts synchronous acquisition, wherein the calculation formula of the acquisition time timei is as follows: adding the product of the first acquisition time length and i-1 to the initial acquisition time; judging whether the number i of the frequency points acquired synchronously in the current round is equal to the number of the frequency points acquired in the current round, if not, determining the frequency point with the (i + 1) th effective frequency point larger than the initial acquisition frequency point in the ordered second list as the frequency point which starts synchronous acquisition in the current round, circulating the steps until the number of the frequency points acquired synchronously in the current round is equal to the number of the frequency points acquired in the current round, generating a synchronous acquisition plan, and recording the last effective frequency point in the current round as the initial acquisition frequency point in the next round.
Step S12: and transmitting the synchronous acquisition plan to a plurality of acquisition nodes, and controlling the plurality of acquisition nodes to synchronously acquire the black broadcast signal data in a time-sharing manner according to the synchronous acquisition plan until the acquisition of the black broadcast signal data of the current round is completed.
And issuing a synchronous acquisition plan to a plurality of acquisition nodes, wherein the synchronous acquisition plan is expressed in a file form, and the file form comprises: synchronously acquiring a frequency point, the acquisition time timei and a synchronous acquisition node group; and each acquisition node reads the synchronous acquisition plan, inquires the acquisition node in the synchronous acquisition node group corresponding to the synchronously acquired frequency point, and acquires black broadcast signal data according to the acquisition time timei corresponding to the synchronously acquired frequency point.
In the embodiment of the present application, it is assumed that the broadcast data brd _ num of 10 frequency points is synchronously acquired in this round, and each frequency point acquires a first acquisition duration rec _ len of the broadcast data. Obviously, the product of the two is the maximum time length for acquiring the broadcast data by all the acquisition nodes in the current round, the initial frequency point fre _ start acquired in the current round is set, and the initial acquisition frequency point is the last frequency point acquired in the previous round.
And collecting effective frequency point data returned by all the collection nodes to form a list with (fre, eq _ id) as an element. Where fre is an effective frequency point, and eq _ id is a signal acquisition receiver number at an acquisition node. The number of the collecting receiver, the number of the collecting node and the position of the collecting node are in one-to-one correspondence.
Grouping the acquired lists with (fre, eq _ id) as elements according to the numerical values of the effective frequency points to form a new effective frequency point data list as a second list, wherein the format of the second list is as follows: ((fre1, (eq _ id11, eq _ id12,..))), (fre2, (eq _ id21, eq _ id22,..), (fre3, (eq _ id31, eq _ id32,..)), wherein each basic element of the list is (fre, (eq _ id, eq _ id,..)) indicating that the same valid frequency bin is received by signal acquisition receivers at acquisition nodes of some columns (eq _ id, eq _ id,..). And sequencing the second list from small to large according to the effective frequency points fre to form an ordered second list.
Setting an initial acquisition time0 of a first synchronous acquisition frequency point of the round, wherein the time0 is required to be later than the current time; set i to 1. And starting from the fre _ start frequency point, taking the ith frequency point which is greater than the fre _ start frequency point in the ordered list, and recording as fre _ i. For the acquisition site list (eq _ id, eq _ id,..) corresponding to the frequency point fre _ i, all the acquisition sites start to acquire broadcast data at the same time at the timei. the formula for calculating the timei is as follows: time0+ (i-1) rec _ len. Taking data (fre, (eq _ id, eq _ id.)) corresponding to the next frequency point after the fre _ i frequency point in the ordered list, and if the last element of the ordered list is processed, starting processing from the first element of the ordered list again; i ═ i + 1.
If brd _ num frequency point data are not processed in the current round, repeating the above steps from the fre _ start frequency point, and taking the ith frequency point which is larger than the fre _ start frequency point in the ordered list for cyclic processing; and if brd _ num frequency point data are processed, the loop is exited. And recording the last frequency point acquired in the current round, and taking the frequency point as an initial frequency point fre _ start in the next round of acquisition. Therefore, the cyclic collection state can be always kept, repeated collection of partial stations is avoided, and the partial stations cannot collect all the time.
Referring to fig. 2, an embodiment of the present application further provides a black broadcast signal collecting system, which includes: the control center is used for making a synchronous acquisition plan of the current round according to a plurality of effective frequency points obtained from a plurality of acquisition nodes; the synchronous acquisition plan is transmitted to the plurality of acquisition nodes, and the plurality of acquisition nodes are controlled to synchronously acquire the black broadcast signal data in a time-sharing manner according to the synchronous acquisition plan until the acquisition of the black broadcast signal data of the current round is completed; the system comprises a plurality of acquisition nodes, a plurality of communication nodes and a plurality of communication nodes, wherein the acquisition nodes are used for acquiring a plurality of effective frequency points; and the synchronous acquisition system is also used for receiving and reading the synchronous acquisition plan and realizing the time-sharing synchronous acquisition of the black broadcast signal data.
To sum up, an embodiment of the present application provides a black broadcast signal acquisition method, including: a synchronous acquisition plan of the current round is formulated according to a plurality of effective frequency points obtained from a plurality of acquisition nodes; and transmitting the synchronous acquisition plan to a plurality of acquisition nodes, and controlling the plurality of acquisition nodes to synchronously acquire the black broadcast signal data in a time-sharing manner according to the synchronous acquisition plan until the acquisition of the black broadcast signal data of the current round is completed. The black broadcasting signal collecting system includes: the system comprises a control center and a plurality of acquisition nodes, wherein the acquisition nodes are single-channel signal receiving equipment. The acquisition node in the system uses a simple and low-cost single-channel acquisition end, and can perform distributed cooperative acquisition under the scheduling of a control center. The simple and low-cost single-channel acquisition end can enable acquisition equipment to be deployed in large quantity, and is favorable for realizing large-quantity deployment and wide application on the premise of only increasing a small amount of cost.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. A black broadcast signal acquisition method, the method comprising:
a synchronous acquisition plan of the current round is formulated according to a plurality of effective frequency points obtained from a plurality of acquisition nodes;
and transmitting the synchronous acquisition plan to a plurality of acquisition nodes, and controlling the plurality of acquisition nodes to synchronously acquire the black broadcast signal data in a time-sharing manner according to the synchronous acquisition plan until the acquisition of the black broadcast signal data in the current round is completed.
2. The method for acquiring the black broadcasting signal according to claim 1, wherein the step of making the current round of the synchronous acquisition plan according to the plurality of effective frequency points obtained from the plurality of acquisition nodes comprises:
setting the collection number of the frequency points in the current round, the first collection duration of the black broadcast signal data corresponding to each frequency point and an initial collection frequency point, wherein the initial collection frequency point is a collection termination frequency point of the previous round;
based on the obtained multiple effective frequency points, obtaining a first list composed of multiple first data, wherein the first data comprises: the effective frequency point and the number of the collection node;
grouping the first list according to the effective frequency points, determining the number of at least one acquisition node corresponding to the same effective frequency point as the same group, and acquiring multiple groups of second data;
sequencing multiple groups of second data according to the numerical values of the effective frequency points to obtain an ordered second list consisting of the multiple groups of second data;
and formulating the synchronous acquisition plan of the current round based on the ordered second list.
3. The black broadcast signal acquisition method of claim 2, wherein the formulating the synchronized acquisition plan for the current round based on the ordered second list comprises:
setting the initial acquisition time of the current round, wherein the initial acquisition time is later than the current time;
determining the frequency point of which the ith effective frequency point is larger than the initial acquisition frequency point in the ordered second list as the ith frequency point which starts synchronous acquisition in the current round, wherein i is an integer, and the initial value of i is 1;
based on at least one number of the collection node corresponding to the ith frequency point which starts synchronous collection, a synchronous collection node group which is formed by at least one synchronous collection node corresponding to the number one to one and a collection time timei of the ith frequency point which starts synchronous collection are generated, wherein a calculation formula of the collection time timei is as follows: adding the product of the first acquisition time length and i-1 to the initial acquisition time;
judging whether the number i of the frequency points acquired synchronously in the current round is equal to the acquisition number of the frequency points in the current round, if not, determining the frequency point of which the (i + 1) th effective frequency point is greater than the initial acquisition frequency point in the ordered second list as the frequency point which starts synchronous acquisition in the current round, circulating the steps until the number of the frequency points acquired synchronously in the current round is equal to the acquisition number of the frequency points in the current round, generating the synchronous acquisition plan, and recording the last effective frequency point in the current round as the initial acquisition frequency point in the next round.
4. The black broadcasting signal collecting method according to claim 3, wherein the transmitting the synchronous collection plan to a plurality of the collection nodes and controlling the plurality of the collection nodes to synchronously collect the black broadcasting signal data according to the synchronous collection plan in a time-sharing manner comprises:
and issuing the synchronous acquisition plan to a plurality of acquisition nodes, wherein the synchronous acquisition plan is represented in a file form, and the file form comprises: synchronously acquiring the frequency point, the acquisition time timei and the synchronous acquisition node group;
and each acquisition node reads the synchronous acquisition plan, inquires the acquisition node in the synchronous acquisition node group corresponding to the synchronously acquired frequency point, and acquires the black broadcast signal data according to the acquisition time timei corresponding to the synchronously acquired frequency point.
5. The method for acquiring black broadcasting signals according to claim 1, wherein before the step of making the synchronous acquisition plan of the current round according to the effective frequency point information corresponding to the obtained plurality of black broadcasting signal data, the method further comprises:
the control center sends frequency point acquisition time instruction to a plurality of collection node respectively for when the frequency point acquisition time instruction is effective state, control the control center with a plurality of carry out effective communication between the collection node, wherein, frequency point acquisition time instruction includes: a start time, a second acquisition duration, and an end time.
6. The black broadcast signal acquisition method according to claim 5, wherein after the control center sends the frequency point acquisition time instruction to the plurality of acquisition nodes, before a synchronous acquisition plan of the current round is made according to the effective frequency point information corresponding to the obtained plurality of black broadcast signal data, the method further comprises:
the acquisition nodes are respectively provided with an initial scanning frequency point and a termination scanning frequency point, and a scanning frequency band between the initial scanning frequency point and the termination scanning frequency point is divided into M continuous scanning sub-bands, wherein the termination scanning sub-frequency point of the M-1 th scanning sub-band is the initial scanning sub-frequency point of the Mth scanning sub-band, the initial scanning sub-frequency point of the first scanning sub-band is the initial scanning frequency point, and M is an integer greater than 1;
performing scanning acquisition on each scanning sub-frequency band for multiple times within a first preset time length so as to gather energy carried by the scanning sub-frequency bands and improve the signal-to-noise ratio;
extracting local frequency point maximum values after energy aggregation carried by each scanning sub-frequency band is finished;
and judging whether each local frequency point maximum is larger than a preset threshold value, if so, determining the local frequency point maximum as an effective frequency point, and obtaining a plurality of effective frequency points.
7. The black broadcasting signal collecting method according to claim 6, wherein after said determining whether each local frequency point maximum is greater than a preset threshold, and if so, determining the local frequency point maximum as a valid frequency point, the method further comprises:
judging whether the time length between the current time and the termination time in the frequency point acquisition time instruction is less than a second preset time length, if so, stopping scanning and acquiring;
if not, judging whether the scanning acquisition of the M scanning sub-frequency bands is finished, if so, stopping the scanning acquisition; and if not, scanning and collecting the next scanning sub-frequency band.
8. A black broadcast signal acquisition system, the system comprising:
the control center is used for making a synchronous acquisition plan of the current round according to a plurality of effective frequency points obtained from a plurality of acquisition nodes; and also for
Transmitting the synchronous acquisition plan to a plurality of acquisition nodes, and controlling the plurality of acquisition nodes to synchronously acquire the black broadcast signal data in a time-sharing manner according to the synchronous acquisition plan until the acquisition of the black broadcast signal data of the current round is completed;
the system comprises a plurality of acquisition nodes, a plurality of communication nodes and a plurality of communication nodes, wherein the acquisition nodes are used for acquiring a plurality of effective frequency points; and also for
And receiving and reading the synchronous acquisition plan to realize the time-sharing synchronous acquisition of the black broadcast signal data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010863834.0A CN111917499B (en) | 2020-08-25 | 2020-08-25 | Black broadcast signal acquisition method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010863834.0A CN111917499B (en) | 2020-08-25 | 2020-08-25 | Black broadcast signal acquisition method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111917499A true CN111917499A (en) | 2020-11-10 |
| CN111917499B CN111917499B (en) | 2022-05-17 |
Family
ID=73279258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010863834.0A Active CN111917499B (en) | 2020-08-25 | 2020-08-25 | Black broadcast signal acquisition method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111917499B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115842597A (en) * | 2023-02-09 | 2023-03-24 | 成都华乾科技有限公司 | Black broadcast detection method and system based on multi-source data fusion |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110222705A1 (en) * | 2010-03-12 | 2011-09-15 | Nissan Technical Center North America, Inc. | Audio broadcast collecting method |
| CN107017957A (en) * | 2017-05-15 | 2017-08-04 | 北京欣易晨通信信息技术有限公司 | A kind of networking type radio broadcasting monitoring device, system and method |
| CN107949012A (en) * | 2017-12-22 | 2018-04-20 | 上海载德信息科技有限公司 | Base station information acquiring method and apparatus |
| CN108811044A (en) * | 2017-04-28 | 2018-11-13 | 深圳市中兴微电子技术有限公司 | A kind of frequency scanning method and its device of small bandwidth communication systems |
| CN109245841A (en) * | 2018-08-03 | 2019-01-18 | 天维讯达（北京）科技有限公司 | A kind of multichannel FM broadcasting audio information acquisition device, method and system |
| CN210351185U (en) * | 2019-11-08 | 2020-04-17 | 潘冬 | Audio acquisition monitoring device of illegal broadcasting station |
| CN111327383A (en) * | 2020-02-26 | 2020-06-23 | 国家无线电监测中心陕西监测站 | Intelligent black broadcast monitoring system and detection method thereof |
| CN111510350A (en) * | 2020-04-10 | 2020-08-07 | 广州致远电子有限公司 | Data time-sharing acquisition method and device based on multiple channels |
-
2020
- 2020-08-25 CN CN202010863834.0A patent/CN111917499B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110222705A1 (en) * | 2010-03-12 | 2011-09-15 | Nissan Technical Center North America, Inc. | Audio broadcast collecting method |
| CN108811044A (en) * | 2017-04-28 | 2018-11-13 | 深圳市中兴微电子技术有限公司 | A kind of frequency scanning method and its device of small bandwidth communication systems |
| CN107017957A (en) * | 2017-05-15 | 2017-08-04 | 北京欣易晨通信信息技术有限公司 | A kind of networking type radio broadcasting monitoring device, system and method |
| CN107949012A (en) * | 2017-12-22 | 2018-04-20 | 上海载德信息科技有限公司 | Base station information acquiring method and apparatus |
| CN109245841A (en) * | 2018-08-03 | 2019-01-18 | 天维讯达（北京）科技有限公司 | A kind of multichannel FM broadcasting audio information acquisition device, method and system |
| CN210351185U (en) * | 2019-11-08 | 2020-04-17 | 潘冬 | Audio acquisition monitoring device of illegal broadcasting station |
| CN111327383A (en) * | 2020-02-26 | 2020-06-23 | 国家无线电监测中心陕西监测站 | Intelligent black broadcast monitoring system and detection method thereof |
| CN111510350A (en) * | 2020-04-10 | 2020-08-07 | 广州致远电子有限公司 | Data time-sharing acquisition method and device based on multiple channels |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115842597A (en) * | 2023-02-09 | 2023-03-24 | 成都华乾科技有限公司 | Black broadcast detection method and system based on multi-source data fusion |
| CN115842597B (en) * | 2023-02-09 | 2023-05-02 | 成都华乾科技有限公司 | Black broadcast detection method and system based on multi-source data fusion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111917499B (en) | 2022-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104204846B (en) | For the method and apparatus of wireless short-range connection setup | |
| JP4594585B2 (en) | Method and apparatus for identifying the location of an asset in a communication network | |
| US3836726A (en) | Data transmission method and apparatus | |
| US20130322214A1 (en) | Ultrasound-based localization of client devices in distributed communication systems, and related devices, systems, and methods | |
| CN104427589B (en) | Selection method for quickly obtaining hotspot information | |
| CN108809450B (en) | Distributed spectrum monitoring method | |
| WO2008082783A1 (en) | Method enabling indoor local positioning and movement tracking in wifi capable mobile terminals | |
| CN102647724B (en) | Radio station, interference avoidance method and the system avoiding for interference | |
| CN106991146A (en) | People information statistical method and system | |
| CN108718254B (en) | Fault positioning method and system for indoor distribution system of subway | |
| CN111917499B (en) | Black broadcast signal acquisition method and system | |
| ATE426273T1 (en) | METHOD AND APPARATUS FOR PERFORMING SEARCH COLLECTION IN A MULTI-CARrier SIGNAL COMMUNICATION SYSTEM | |
| CN108737968A (en) | A method of passing through wireless technology sensing passengers abnormal behaviour | |
| CN102223186B (en) | Method for efficiently cooperatively sensing rotation scanning radar signals and system thereof | |
| US8340166B2 (en) | Smart grid radio-frequency interference (RFI) detection | |
| CN105453673B (en) | A kind of data transmission method and equipment | |
| JPH096934A (en) | Radio discrimination device | |
| CN114727362A (en) | Method for sending and receiving synchronization signal, network equipment and terminal | |
| Valenzuela-Pérez et al. | On the use of sniffers for spectrum occupancy measurements of Bluetooth low energy primary channels | |
| CN1260651A (en) | Receiver, CDMA telecommunication system and method for synchronizing receiver with sending station of said system | |
| CN111917494B (en) | Black broadcast signal monitoring and positioning method and system | |
| Hughes et al. | Spread-spectrum radio | |
| CN112327251B (en) | Unattended signal time difference positioning method under low-rate communication condition | |
| CN105099575B (en) | Broadcast television signal real-time perception system and method based on MATLAB GUI | |
| JPH0591088A (en) | Communication disturbing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |