CN111193565B - Telemetering spectrum sensing management method - Google Patents
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- CN111193565B CN111193565B CN202010260163.9A CN202010260163A CN111193565B CN 111193565 B CN111193565 B CN 111193565B CN 202010260163 A CN202010260163 A CN 202010260163A CN 111193565 B CN111193565 B CN 111193565B
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Abstract
The invention relates to a remote sensing spectrum sensing management method, belonging to the technical field of remote sensing spectrum sensing management; the technical problem to be solved is as follows: an improvement of a telemetry spectrum sensing management method is provided; the technical scheme for solving the technical problem is as follows: providing a spectrum management device and a plurality of telemetry devices in a telemetry zone, the telemetry devices being located on respective telemetry targets; defining spectrum resources in a spectrum management device into a plurality of states, and setting wireless communication parameters for the spectrum management device; the frequency spectrum management device carries out identification management distribution on the frequency spectrum; the invention is applied to a remote sensing spectrum sensing management place.
Description
Technical Field
The invention discloses a telemetry spectrum sensing management method, and belongs to the technical field of telemetry spectrum sensing management.
Background
The aerospace telemetering technology originates from the 30 th and 40 th of the 20 th century, along with the development of communication technology, semiconductor technology and software radio technology, the telemetering technology is more perfect and flexible in the aspects of modulation system, transmission distance, data capacity, measurement precision, equipment miniaturization and the like, the telemetering transmitter installed on an aircraft at present occupies various types in the aspects of modulation system and frequency spectrum resources, the telemetering transmitter uses specific code rate, specific power and specific frequency point to transmit collected telemetering data through an antenna, and a special telemetering ground station receives, demodulates and stores radio in the air according to planned parameters; when the telemetering ground station is used, according to a telemetering action area, unified planning management is carried out on all telemetering transmitters in the area for receiving and sending signals, parameters such as frequency point resources occupied by each telemetering transmitter, transmitting power and data code rate are determined, and the telemetering ground receiving station carries out cross station arrangement according to information such as the number, working parameters and working time of the telemetering transmitters, so that the aerial radio frequency signals are ensured not to have overlapping interference, and telemetering data are smoothly received.
However, in the using process, it is found that it is difficult for the ground receiving station to provide an area in which a single telemetry transmitter works alone, and generally, a plurality of telemetry transmitters work in the same telemetry area, and the existing telemetry system needs to plan the telemetry devices in the telemetry area uniformly in advance and coordinate on site, so that the problems of overlapping of frequency spectrum resources, interference of radio signals and the like are avoided.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to solve the technical problems that: an improvement in a telemetry spectrum sensing management method is provided.
In order to solve the technical problems, the invention adopts the technical scheme that: a telemetry spectrum sensing management method comprises the following steps:
the method comprises the following steps: providing a spectrum management device and a plurality of telemetry devices in a telemetry zone, the telemetry devices being located on respective telemetry targets;
step two: the spectrum resources in the spectrum management device are defined into 9 states:
state 1 is spectrum resources not occupied by any telemetry device;
state 2 is spectrum resources that are successfully allocated and are in use;
the state 3 is the spectrum resource which is successfully allocated and is recycled after being used, and the spectrum resource in the state can be continuously allocated after the spectrum resource in the state 1 is used;
state 4 is assigned to the telemetry device, but not successfully;
state 5 is assigned to the telemetry device but no assignment success response command is received;
state 6 is the telemetry unit for which the task is planned, and the spectrum resource in the state does not participate in allocation any more;
state 7 is the preset spectrum resource existing in the unallocated telemetered airspace;
state 8 is a preset out-of-band spectrum resource existing in the telemetry space;
the state 9 is a frequency spectrum resource in a suspended state, and the task does not participate in allocation any more, and comprises a state 6, a state 7 and a state 8;
step three: setting wireless communication parameters for the spectrum management device:
step 310: the frequency spectrum management device sends a wireless communication command to the remote measuring device;
step 320: after receiving the command, the telemetering device feeds back a response command to the spectrum management device and enters a communication state;
step 330: the frequency spectrum management device stops sending wireless communication commands and sets parameters according to requirements;
step 340: the spectrum management device sends the parameters configured for the remote measuring device to the remote measuring device;
step 350: the remote measuring device changes parameters according to a configuration protocol and stores the parameters;
step 360: the telemetering device feeds back the information of which the configuration is modified to the spectrum management device;
step four: the spectrum management device identifies, manages and allocates the spectrum:
step 410: a spectrum management unit arranged in the spectrum management device sends preset spectrum resources to a spectrum sensing unit;
step 411: the spectrum sensing unit periodically scans the spectrum resource occupation condition in the telemetry airspace;
step 412: the frequency spectrum sensing unit feeds back the frequency spectrum resource occupation condition information to the frequency spectrum management unit;
step 413: after receiving the feedback of the resource occupation condition, the frequency spectrum management unit updates the self-preset frequency spectrum resource information;
step 414: the frequency spectrum management unit sends networking broadcast instructions to all the remote measuring devices;
step 415: the remote measuring device feeds back a networking broadcast response command carrying the identity identifier to the spectrum management unit;
step 416: the frequency spectrum management unit stores the identity identifier information and allocates corresponding working frequency points and working modes according to the occupation condition of frequency spectrum resources;
step 417: the frequency spectrum management unit sends a networking command carrying working frequency point and working mode information to the remote measuring device;
step 418: the remote measuring device is configured according to the received working frequency point and working mode information and enters a working state;
step 419: after the configuration is finished, the remote measuring device feeds back a response command of successful networking to the spectrum management unit;
step 420: the frequency spectrum management unit updates the frequency spectrum resource occupation condition;
step 421: and controlling the spectrum sensing unit to send feedback information carrying the spectrum resource occupation and recovery state to the spectrum management unit.
The specific work flow of the spectrum management device in the fourth step is as follows:
the frequency spectrum management device detects and senses frequency spectrum resources in a telemetering airspace in real time, updates a preset frequency spectrum resource information state according to a detection result, defines a preset frequency point mark existing in the air as a state 7, defines a frequency point mark outside a preset frequency spectrum resource range as a state 8, and ensures that the frequency spectrums in the states 7 and 8 are both in a suspended state, so that the task does not participate in allocation any more;
the frequency spectrum management device sends networking broadcast commands at equal intervals in a circulating mode, after receiving feedback signals, the frequency spectrum management device sends the networking broadcast commands according to the identification identifier of the telemetering device in the signals, the commands carry information such as distribution frequency points and working modes, the distribution frequency points are the frequency points in the state 1, after receiving the networking feedback signals, the frequency points are marked to be in the state 2, and if the feedback signals are not received, the frequency points are marked to be in the state 4; according to the detection result, the state 2 frequency point is updated to be the state 3 after the use is finished;
if the frequency point in the state 4 is not sensed by the frequency spectrum sensing unit, the frequency point in the state 4 is suspended, the task is not used any more, if the frequency point in the state 4 is sensed, the state of the frequency point is updated to be in the state 5, and after the frequency point is used, the state of the frequency point is updated to be in the state 3.
A telemetering frequency spectrum sensing management device comprises a frequency spectrum management device arranged in a ground station, wherein a parameter management unit, a frequency spectrum management unit, a wireless communication unit and a frequency spectrum sensing unit are arranged in the frequency spectrum management device, the parameter management unit is in bidirectional connection with the frequency spectrum management unit through a lead, the frequency spectrum management unit is in bidirectional connection with the wireless communication unit through a lead, the input end of the frequency spectrum sensing unit is externally connected with a communication antenna, and the output end of the frequency spectrum sensing unit is connected with the frequency spectrum management unit;
the wireless communication unit is externally connected with a telemetering antenna.
Compared with the prior art, the invention has the beneficial effects that: the method for managing the dynamic frequency spectrum comprises a wireless communication link protocol, a frequency spectrum management method and a platform, is used for managing and controlling frequency spectrum resources in a remote measuring area, is compatible with different wireless communication protocols by taking radio as the platform, can effectively improve the working efficiency and the frequency spectrum resource occupancy rate of a remote measuring system, and overcomes the defects of frequency point conflict, poor real-time performance, complex system composition, low task scheduling efficiency and the like of the remote measuring system.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic view of the present invention in use;
FIG. 2 is a schematic diagram of a spectrum management apparatus according to the present invention;
FIG. 3 is a flowchart illustrating the steps of setting wireless communication parameters according to the present invention;
FIG. 4 is a flowchart of the spectrum identification management allocation step of the present invention;
fig. 5 is a diagram illustrating a spectrum resource status control relationship defined in the present invention.
Detailed Description
The invention relates to a software radio using method, a frequency spectrum dynamic management method and a wireless communication strategy, which can determine information such as configuration parameters, working parameters and the like of a telemetering transmitter according to the occupation information of frequency spectrum resources.
As shown in fig. 2, the telemetry spectrum management system provided by the present invention mainly comprises a spectrum sensing unit 204, a parameter management unit 201, a spectrum management unit 202, a wireless communication unit 203, a telemetry antenna 205, and a communication antenna 206, wherein the main contents of the spectrum management setting are as follows:
the method and the system for managing the spectrum resources in the telemetering airspace can dynamically allocate working frequency points to the telemetering device according to the use condition of the spectrum resources in the telemetering airspace and the frequency resources allowed to be used, scan and sense the spectrum resources in the airspace in real time, and recycle the finished spectrum resources.
A spectrum sensing unit 204 arranged in the system, a working flow chart of which is shown in fig. 4, can perform real-time spectrum detection on a telemetry frequency band in a telemetry airspace to obtain the use condition of a preset frequency resource, wherein the detection method comprises detecting according to stepping detection (detection stepping can be set) or according to the preset spectrum resource, and informing the spectrum management unit 202 of the use condition of the spectrum resource according to a detection result; the spectrum sensing result comprises occupied allocated spectrum resources, recycled spectrum resources used and other spectrum resources outside a preset range; the spectrum sensing unit 204 can receive a certain frequency point signal in the telemetry airspace through setting, and transmit the signal to the PC in real time.
The parameter management unit 201 manages and stores all required parameters in the system, the parameters are set by a PC through a communication interface, and the set parameters comprise an identity identifier, instruction sending power, a communication frequency point, a networking broadcast instruction sending period and a distribution frequency point of the system; the equipment can also read the identification identifier of the telemetering device with the allocated frequency point, and the working flow is shown in figure 3;
as shown in fig. 4, specifically, it is a flowchart of spectrum identification management allocation of the spectrum management unit 202, where the unit manages spectrum resources in a telemetry airspace, when telemetry devices in the airspace are all in a silent state, all operations are controlled by spectrum sensing management equipment, and the spectrum management unit 202 allocates operating frequency points and operating modes to telemetry transmitters in the airspace according to a time division multiplexing principle;
the management equipment provided by the invention circularly sends networking broadcast commands at equal intervals, allocates working frequency points and working modes according to the remote measuring transmitter identifier in the networking broadcast response command, and allocates the working frequency points to be preset frequency points in a state 1; allocating a working mode as a default working mode in the parameter management setting;
the spectrum resources in the spectrum management device provided by the present invention are divided into 9 states, as shown in fig. 5, specifically, a spectrum resource state control diagram: state 1 in the figure is a spectrum resource not occupied by any telemetry transmitter;
state 2 is spectrum resources that are successfully allocated and are in use;
the state 3 is the spectrum resource which is successfully allocated and is recycled after being used, and the spectrum resource in the state can be continuously allocated after the spectrum resource in the state 1 is used;
state 4 is allocated to the telemetry transmitter but not successfully;
state 5 is assigned to the telemetry transmitter but no assignment success acknowledgement command is received;
state 6 is a planned transmitter (106 in fig. 1) without communication function of the task, and the spectrum resources do not participate in allocation any more;
state 7 is the preset spectrum resource existing in the unallocated telemetered airspace;
state 8 is a preset out-of-band spectrum resource existing in the telemetry space;
the state 9 is a frequency spectrum resource in a suspended state, and the task does not participate in allocation any more, and comprises a state 6, a state 7 and a state 8;
the method has a memory function on the identity identifier of the telemetering transmitter, if the spectrum sensing unit 204 does not exist in the system, the telemetering transmitter is electrified again and then is allocated with spectrum resources which are allocated for the first time, if the spectrum sensing unit 204 exists in the system, the identity identifier of the telemetering device is cleared and memorized after the occupied frequency point of the identity identifier is recovered, and the telemetering device is electrified again and then is allocated with spectrum resources again;
the invention also comprises a wireless communication unit 203, a wireless communication parameter setting flow chart is shown in figure 3, the unit is a wireless instruction or networking instruction transmission platform and can send different commands to the telemetering transmitter and forward the commands sent by the PC;
the wireless communication unit 203 transmits a wireless instruction to the interaction between the PC and the telemetering transmitter, and mainly completes the setting of the identity identifier of the telemetering transmitter, the presetting of a sending frequency point, the setting of transmitting power, the setting of a wireless communication window, the setting of a wireless networking period, the setting of a working mode and the setting of a starting instruction;
the wireless communication unit 203 transmits the networking instruction to allocate frequency point instructions to the telemetry transmitter configuration in the telemetry airspace, wherein the frequency point instructions include a calling instruction, a calling response instruction, an allocation instruction and an allocation response instruction.
Furthermore, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Other embodiments, which can be derived by one of ordinary skill in the art from the embodiments given herein without any creative effort, shall fall within the scope of the present invention.
Example 1: the spectrum sensing management equipment provided by the invention is used as a parameter setting function, and the parameters of the telemetering transmitter are set in a wireless mode.
As shown in fig. 3, the spectrum sensing management device sends wireless communication signals in a circulating manner, the telemetry transmitter enters a communication state and sends feedback signals after receiving the wireless communication signals, the spectrum sensing management device stops sending the wireless communication signals after receiving the feedback signals, parameters of the telemetry transmitter are set according to an instruction of an upper computer, and the telemetry transmitter stores the set parameters and modifies the set parameters in real time to work according to new parameters; in this embodiment, in addition to setting parameters of the telemetry transmitter, the telemetry transmitter may be used as a transmission channel to transmit a signal to be transmitted wirelessly.
Example 2: the spectrum sensing management device is used as a spectrum management function, and the spectrum sensing management device of the embodiment comprises a spectrum sensing unit 204 which can manage spectrum resources in a telemetry airspace and store identity identifiers of telemetry devices occupying the spectrum resources.
As shown in FIG. 1, a telemetry system is formed by a plurality of telemetry targets using the telemetry transmitter of the present invention (102-105 in the figure) and a common telemetry transmitter (106 in the figure), and a spectrum sensing management device 101.
The spectrum sensing management equipment 101 detects and senses spectrum resources in a telemetry airspace in real time, updates a preset spectrum resource state according to a detection result, defines a preset frequency point mark existing in the air as a state 7 (namely, for a transmitter 106 in a figure), defines a frequency point mark outside a preset spectrum resource range as a state 8, wherein the spectrum of the state 7 and the spectrum of the state 8 are both in a suspended state, and the task does not participate in allocation any more.
The spectrum sensing management equipment 101 circularly sends networking broadcast commands at equal intervals, and sends the networking commands according to the identity identifier of the telemetering transmitter in the signals after receiving the feedback signals, wherein the commands carry information such as distribution frequency points and working modes, and the distribution frequency points are frequency points in a state 1;
after receiving a networking feedback signal, marking the frequency point as a state 2;
if the feedback signal is not received, the frequency point is marked as a state 4;
according to the detection result, the state 2 frequency point is updated to be the state 3 after the use is finished;
if the frequency spectrum sensing unit does not sense the state 4 frequency point, the state 4 frequency point is suspended, the task is not used, if the state 4 frequency point is sensed, the state of the frequency point is updated to be the state 5, and after the use is finished, the frequency point is updated to be the state 3;
if the number of the telemetering transmitters in the telemetering airspace is larger than the preset number of frequency points, when the allocation of the frequency points in the state 1 is finished, the frequency points in the state 3 can be continuously allocated as standby frequency points;
in this embodiment, after the allocated frequency point is recovered, the corresponding identifier of the telemetry device in the spectrum sensing management device is removed, that is, the identity identifier of the telemetry device whose allocated frequency point is in state 3 is removed.
Example 3: the spectrum sensing management device is used as a spectrum management function, and the spectrum sensing management device does not comprise a spectrum sensing unit 204, can manage spectrum resources in a telemetering airspace, stores an identity identifier of a telemetering device occupying the spectrum resources, and allocates the same spectrum resources after the telemetering device is powered on again.
The embodiment comprises a plurality of telemetry transmitters 102 and 106, spectrum sensing management equipment 101 and a computer 109 which use the invention to form a telemetry system; the working process of the frequency spectrum sensing management equipment is the same as that of the embodiment 2, but the allocated frequency points are not recovered any more, the identity identifier of the allocated frequency point remote measuring device is stored in the frequency spectrum sensing management equipment, and the computer can read the identity identifier of the allocated frequency point remote measuring device in a wired interface mode and is used for judging the frequency points allocated by the remote measuring device; and after the telemetering device is powered on again, the same frequency point is distributed.
In the embodiment, when the spectrum sensing management equipment performs networking, the spectrum sensing management equipment allocates a working frequency point, a working mode and working power, and the working mode comprises a test mode and a silent mode according to a use scene, wherein the test mode is that a radio frequency signal is sent immediately after the networking is successful, the silent mode is that a silent state is entered after the networking is successful, and the radio frequency signal is sent after a starting signal is received; in order to avoid the interference of the aerial device to the radio signal, different working powers are distributed according to the working environment and the working distance.
Example 4: the spectrum sensing management equipment is used as a data acquisition device.
In the embodiment, the telemetry system is composed of a telemetry transmitter 102, a spectrum sensing management device 101 and a computer 109, the spectrum sensing management device sends an acquisition starting command according to a requirement, the telemetry transmitter acquires a signal after receiving the command and sends the signal to the spectrum sensing management device through a radio frequency signal, the radio frequency signal comprises acquisition data, a frame counter and a telemetry transmitter identity identifier, the spectrum sensing management device demodulates and synchronizes the received radio frequency signal and sends the signal to the PC, and the signal is displayed or stored by the PC in real time.
Example 5: the spectrum sensing management device is used as a simple telemetering ground station.
In the embodiment, the telemetry system is composed of the telemetry transmitter 102, the spectrum sensing management device 101 and the computer 109, the spectrum sensing management device is set to be in a ground station mode through setting, the spectrum sensing management device is set according to the characteristics (transmitting frequency point, synchronous code and code rate) of the radio frequency signals transmitted by the telemetry device, and the spectrum sensing management device transmits the received radio frequency signals to the computer in real time and displays the radio frequency signals by the computer in real time.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (2)
1. A telemetry spectrum sensing management method is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: providing a spectrum management device and a plurality of telemetry devices in a telemetry zone, the telemetry devices being located on respective telemetry targets;
step two: the spectrum resources in the spectrum management device are defined into 9 states:
state 1 is spectrum resources not occupied by any telemetry device;
state 2 is spectrum resources that are successfully allocated and are in use;
the state 3 is the spectrum resource which is successfully allocated and is recycled after being used, and the spectrum resource in the state can be continuously allocated after the spectrum resource in the state 1 is used;
state 4 is assigned to the telemetry device, but not successfully;
state 5 is assigned to the telemetry device but no assignment success response command is received;
state 6 is the telemetry unit for which the task is planned, and the spectrum resource in the state does not participate in allocation any more;
state 7 is the preset spectrum resource existing in the unallocated telemetered airspace;
state 8 is a preset out-of-band spectrum resource existing in the telemetry space;
the state 9 is a frequency spectrum resource in a suspended state, and the task does not participate in allocation any more, and comprises a state 6, a state 7 and a state 8;
step three: setting wireless communication parameters for the spectrum management device:
step 310: the frequency spectrum management device sends a wireless communication command to the remote measuring device;
step 320: after receiving the command, the telemetering device feeds back a response command to the spectrum management device and enters a communication state;
step 330: the frequency spectrum management device stops sending wireless communication commands and sets parameters according to requirements;
step 340: the spectrum management device sends the parameters configured for the remote measuring device to the remote measuring device;
step 350: the remote measuring device changes parameters according to a configuration protocol and stores the parameters;
step 360: the telemetering device feeds back the information of which the configuration is modified to the spectrum management device;
step four: the spectrum management device identifies, manages and allocates the spectrum:
step 410: a spectrum management unit arranged in the spectrum management device sends preset spectrum resources to a spectrum sensing unit;
step 411: the spectrum sensing unit periodically scans the spectrum resource occupation condition in the telemetry airspace;
step 412: the frequency spectrum sensing unit feeds back the frequency spectrum resource occupation condition information to the frequency spectrum management unit;
step 413: after receiving the feedback of the resource occupation condition, the frequency spectrum management unit updates the self-preset frequency spectrum resource information;
step 414: the frequency spectrum management unit sends networking broadcast instructions to all the remote measuring devices;
step 415: the remote measuring device feeds back a networking broadcast response command carrying the identity identifier to the spectrum management unit;
step 416: the frequency spectrum management unit stores the identity identifier information and allocates corresponding working frequency points and working modes according to the occupation condition of frequency spectrum resources;
step 417: the frequency spectrum management unit sends a networking command carrying working frequency point and working mode information to the remote measuring device;
step 418: the remote measuring device is configured according to the received working frequency point and working mode information and enters a working state;
step 419: after the configuration is finished, the remote measuring device feeds back a response command of successful networking to the spectrum management unit;
step 420: the frequency spectrum management unit updates the frequency spectrum resource occupation condition;
step 421: and controlling the spectrum sensing unit to send feedback information carrying the spectrum resource occupation and recovery state to the spectrum management unit.
2. The telemetry spectrum sensing management method of claim 1, wherein: the specific work flow of the spectrum management device in the fourth step is as follows:
the frequency spectrum management device detects and senses frequency spectrum resources in a telemetering airspace in real time, updates a preset frequency spectrum resource information state according to a detection result, defines a preset frequency point mark existing in the air as a state 7, defines a frequency point mark outside a preset frequency spectrum resource range as a state 8, and ensures that the frequency spectrums in the states 7 and 8 are both in a suspended state, so that the task does not participate in allocation any more;
the frequency spectrum management device sends networking broadcast commands at equal intervals in a circulating mode, after receiving feedback signals, the frequency spectrum management device sends the networking broadcast commands according to the identification identifier of the telemetering device in the signals, the commands carry information such as distribution frequency points and working modes, the distribution frequency points are the frequency points in the state 1, after receiving the networking feedback signals, the frequency points are marked to be in the state 2, and if the feedback signals are not received, the frequency points are marked to be in the state 4; according to the detection result, the state 2 frequency point is updated to be the state 3 after the use is finished;
if the frequency point in the state 4 is not sensed by the frequency spectrum sensing unit, the frequency point in the state 4 is suspended, the task is not used any more, if the frequency point in the state 4 is sensed, the state of the frequency point is updated to be in the state 5, and after the frequency point is used, the state of the frequency point is updated to be in the state 3.
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