CN109375155B - Radio signal monitoring and direction finding method based on auditory mapping and processor - Google Patents
Radio signal monitoring and direction finding method based on auditory mapping and processor Download PDFInfo
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- CN109375155B CN109375155B CN201811431833.8A CN201811431833A CN109375155B CN 109375155 B CN109375155 B CN 109375155B CN 201811431833 A CN201811431833 A CN 201811431833A CN 109375155 B CN109375155 B CN 109375155B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/14—Systems for determining direction or deviation from predetermined direction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
Abstract
The invention discloses a radio signal monitoring and direction finding method based on auditory mapping and a processor, belonging to the technical field of radio monitoring, wherein the method comprises the following steps: a virtual sound source signal having an angle attribute is generated based on the received monitored radio signal. The monitored radio signal is a radio frequency signal, and virtual sound source mapping processing with angle attributes is carried out on the radio frequency signal and comprises a frequency spectrum mapping mode and an azimuth mapping mode; the radio frequency signal is subjected to virtual sound source mapping processing with angle attributes in a frequency spectrum mapping mode, and direction finding processing of the radio frequency signal is not needed; performing virtual sound source mapping processing with angle attributes on radio frequency signals in the direction-finding mode requires direction finding on the radio frequency signals. The processor, when executing the computer instructions, performs all of the steps of the above-described method. The invention can realize that a driver can independently finish the signal monitoring and proximity detection searching work of the monitoring vehicle while monitoring the safe driving of the vehicle, thereby improving the driving safety and the searching efficiency.
Description
Technical Field
The invention relates to the technical field of radio monitoring and direction finding, in particular to a radio signal monitoring and direction finding method and a processor based on auditory mapping.
Background
Currently, with the application of vehicle-mounted mobile radio signal monitoring and direction-finding equipment (hereinafter referred to as a monitoring vehicle for short), there is an application scene that an operator performs signal search and performs monitoring vehicle driving at the same time, and when a current monitoring vehicle performs signal source positioning search during traveling, a special person needs to be equipped for observing monitoring and direction-finding parameters except for a monitoring vehicle driver so as to perform approaching and approaching search of signals, find a signal transmitting station and occupy human resources; and if the signal of monitoring car is close to and is listened the work of looking for by single execution, then require the driver to drive the monitoring car while observing the monitoring data of display screen, there is the potential safety hazard.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a radio signal monitoring and direction finding method and a radio signal monitoring and direction finding processor based on auditory mapping.
The purpose of the invention is realized by the following technical scheme: a radio signal monitoring direction-finding method based on auditory mapping, the method comprising: a virtual sound source signal having an angle attribute is generated based on a monitored radio signal received by an antenna.
Specifically, the monitored radio signals are radio frequency signals, and the virtual sound source mapping processing with the angle attribute on the radio frequency signals comprises radio frequency signal processing in a spectrum mapping mode and/or direction-finding radio frequency signal processing in a direction-finding degree mapping mode.
Specifically, the method comprises a radio frequency signal processing step in a spectrum mapping mode and/or a direction-finding radio frequency signal processing step in a direction-finding degree mapping mode.
Further, the radio frequency signal processing step in the spectrum mapping mode comprises:
frequency band scanning;
carrying out virtual sound source mapping processing with angle attributes on received radio frequency signals within a preset radio frequency signal parameter range according to frequency spectrum information of the radio frequency signals to generate virtual sound source signals with angle attributes;
the direction-finding radio frequency signal processing step in the direction-finding degree mapping mode comprises the following steps:
fixed frequency direction finding;
and carrying out virtual sound source mapping processing with angle attributes on the received radio frequency signals within the preset direction-finding radio frequency signal parameter range according to the direction-indicating degree information of the radio frequency signals to generate virtual sound source signals with the angle attributes.
Specifically, the virtual sound source signal represents the target signal parameter by volume and/or pitch level correspondence.
Specifically, the preset radio frequency signal parameters include radio frequency signal field strength, frequency, bandwidth, frequency offset, and modulation degree, which may be fixed radio frequency signal field strength, frequency, bandwidth, frequency offset, and modulation degree, or a certain percentage, such as 10%, of the average value of the above parameters of the whole frequency band signal; the preset direction-finding radio frequency signal parameters comprise signal field intensity, frequency, bandwidth, frequency offset, modulation degree and a direction-finding quality value; when the preset signal parameter is more than one, triggering the mapping action when all parameters of the radio frequency signal are within the preset signal parameter range; the preset signal parameters comprise preset radio frequency signal parameters and preset direction-finding radio frequency signal parameters.
Specifically, in the spectrum mapping mode, the formula for performing the virtual sound source mapping process with the angle attribute according to the spectrum information of the rf signal is as follows:
wherein f is n Frequency value of frequency point to be mapped, f 0 Is the starting frequency value of the frequency band sweep, f 1 Is the termination frequency value of frequency band scanning, theta is the frequency point f n And mapping the corresponding virtual sound source angle.
Specifically, frequency spectrum information of the radio frequency signal is generated by a monitoring receiver, and an input end of the monitoring receiver is connected with a receiving antenna; the direction-finding information of the radio frequency signals is generated by a direction-finding receiver, and the input end of the direction-finding receiver is connected with a direction-finding antenna.
Specifically, the virtual sound source signal generated in the spectrum mapping mode is played by a first audio playing device; the virtual sound source signal generated in the direction indicating degree mapping mode is played by second audio playing equipment; the first audio playing device is used for playing a virtual sound source signal with an angle attribute and comprises a multi-channel vehicle-mounted sound box system; the second audio playing device is used for playing virtual sound source signals with angle attributes and comprises a multi-channel vehicle-mounted sound box system, or an open-type headset with an electronic compass and a vehicle-mounted electronic compass matched with the open-type headset for use.
Specifically, when the open-type headset with the electronic compass and the vehicle-mounted electronic compass used with the open-type headset compensate the head offset angle of the user, the compensation calculation formula is as follows:
θ′＝θ 0 -(θ 1 -θ 2 )
wherein, theta' is the direction indicating value of the frequency point to be mapped, and theta 0 Indicating the direction value theta of the frequency point measured by the vehicle-mounted monitoring system 1 Head orientation compass angle readings, theta, measured for an electronic compass on the headset 2 And reading the angle of the head orientation compass measured by the vehicle-mounted electronic compass.
In particular, the comparison of the radio frequency signal parameters and/or direction finding radio frequency signal parameters, with the preset signal parameter ranges, may be implemented by software (computer processing module) and/or hardware (antenna).
Specifically, the method for generating the virtual sound source signal with the angle attribute by comparing the received radio frequency signal parameter with the preset radio frequency signal parameter range through the computer processing module comprises the following steps:
presetting a radio frequency signal parameter range; the receiving antenna receives the monitored radio signal and transmits the monitored radio signal to the monitoring receiver; the monitoring receiver processes the radio frequency signal to obtain the frequency spectrum information of the signal, and starts frequency band scanning work; the computer processing module judges whether the received radio frequency signal parameter is in a preset radio frequency signal parameter range, and if so, virtual sound source mapping processing with angle attributes is carried out according to the frequency spectrum information of the radio frequency signal; the first audio playing device plays the virtual sound source signal with the angle attribute to position the target signal.
Specifically, the method for generating a virtual sound source signal with an angle attribute by comparing a received radio frequency signal parameter with a preset radio frequency signal parameter range through an antenna comprises the following steps:
presetting a radio frequency signal parameter range, and starting scanning work in a certain frequency range; the receiving antenna receives a radio frequency signal in a certain frequency range, and the parameter of the radio frequency signal is in a preset radio frequency signal parameter range, and the signal is transmitted to the monitoring receiver; the monitoring receiver processes the radio frequency signal and outputs frequency spectrum information of the radio frequency signal; the computer processing module carries out virtual sound source mapping processing with angle attribute on the frequency spectrum information of the radio frequency signal; the first audio playing device plays the virtual sound source signal with the angle attribute to position the target signal.
Specifically, the method for generating the virtual sound source signal with the angle attribute by comparing the received radio frequency signal parameter with the preset direction-finding radio frequency signal parameter range through the computer processing module comprises the following steps:
presetting a direction-finding radio frequency signal parameter range, and starting fixed frequency direction finding work; the direction-finding antenna receives the radio frequency signal with fixed frequency and feeds the radio frequency signal back to the direction-finding receiver; the direction-finding receiver processes the radio frequency signal to obtain the direction-finding degree, field intensity, frequency, bandwidth, frequency deviation, modulation degree and direction-finding quality value information parameters of the radio frequency signal; the computer processing module judges whether the radio frequency signal parameter is in a preset direction-finding radio frequency signal parameter range, and if the radio frequency signal parameter is in the preset direction-finding radio frequency signal parameter range, virtual sound source mapping processing with angle attributes is carried out according to direction-finding degree information of the signal; the second audio playing device plays the virtual sound source signal with the angle attribute to position the target signal.
Specifically, the method for generating the virtual sound source signal with the angle attribute by comparing the received radio frequency signal parameter with the preset direction-finding radio frequency signal parameter range through the direction-finding antenna comprises the following steps:
presetting a direction-finding radio frequency signal parameter range, and starting fixed frequency direction finding work; the direction-finding antenna receives radio frequency signals with fixed frequency, the radio frequency signal parameters are within a preset direction-finding radio frequency signal parameter range, and the radio frequency signals are fed to the direction-finding receiver; the direction-finding receiver processes the radio frequency signal to obtain direction-finding information of the radio frequency signal; the computer processing module carries out virtual sound source mapping processing with angle attributes according to the direction indication degree information of the radio frequency signal; the second audio playing device plays the virtual sound source signal with the angle attribute to position the target signal.
In particular, a processor is also included which, when executing computer instructions, performs the steps of the above method.
Compared with the prior art, the invention has the beneficial effects that:
the invention can realize that the driver independently finishes the signal approaching detection and searching work of the monitoring vehicle, and improves the driving safety when executing the task and the target signal source searching efficiency of the vehicle-mounted mobile monitoring station.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a flowchart of a method of example 1 of the present invention.
Fig. 2 is a flowchart of a method for generating a virtual audio signal with an angle attribute from a radio frequency signal in a spectrum mapping mode according to an embodiment 1 of the present invention;
fig. 3 is a schematic diagram of auditory mapping according to spectrum information of a radio frequency signal in the spectrum mapping mode according to embodiment 1 of the present invention;
fig. 4 is a flowchart illustrating a method for generating a virtual audio signal with an angle attribute from a direction-finding rf signal in a direction-degree mapping mode according to embodiment 1 of the present invention;
fig. 5 is a schematic diagram of performing auditory mapping according to direction information of a radio frequency signal in the direction mapping mode in embodiment 1 of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, and it should be understood that the embodiments described herein are only for illustrating and explaining the present invention and are not used to limit the present invention.
Example 1
The embodiment relates to a radio signal monitoring and direction finding method based on auditory mapping, which is applied to vehicle-mounted mobile radio signal monitoring and direction finding equipment (hereinafter referred to as a monitoring vehicle) so that a driver can independently complete the radio signal approaching detection and finding work of the monitoring vehicle under the condition of safe driving in an application scene of finding a target signal by driving the monitoring vehicle, and the driving safety and the finding efficiency are improved.
As shown in fig. 1, a radio signal monitoring direction-finding method based on auditory mapping includes: a virtual sound source signal having an angle attribute is generated from a monitored radio signal received by an antenna.
Preferably, in this embodiment, the monitored radio signal is a radio frequency signal, and the virtual sound source mapping processing with an angle attribute on the radio frequency signal includes radio frequency signal processing in a spectrum mapping mode and/or direction-finding radio frequency signal processing in a direction-finding mapping mode.
Correspondingly, the method comprises a radio frequency signal processing step in a spectrum mapping mode and/or a direction-finding radio frequency signal processing step in a direction-finding degree mapping mode.
More preferably, the radio frequency signal processing step in the spectrum mapping mode comprises:
s01: frequency band scanning;
s02: carrying out virtual sound source mapping processing with angle attribute on the received radio frequency signal within a preset radio frequency signal parameter range according to the frequency spectrum information of the radio frequency signal to generate a virtual sound source signal with the angle attribute;
in one implementation manner of this embodiment, the comparison between the received radio frequency signal parameter and a preset radio frequency signal parameter range is implemented in a hardware manner, so as to generate a virtual sound source signal with an angle attribute.
In another implementation manner of this embodiment, the received rf signal parameter is compared with a preset rf signal parameter range in a software manner, so as to generate a virtual sound source signal with an angle attribute.
Specifically, as shown in fig. 2, the method for generating a virtual sound source signal with an angle attribute by comparing a received radio frequency signal parameter with a preset radio frequency signal parameter range through a software mode, i.e. a computer processing module, includes the following steps:
s0111: presetting a radio frequency signal parameter range; wherein the radio frequency signal parameter has at least one.
S0112: the receiving antenna receives the monitored radio frequency signal and transmits the monitored radio frequency signal to the monitoring receiver;
s0113: the monitoring receiver processes the radio frequency signal to obtain frequency spectrum information of the radio frequency signal;
s0114: starting frequency band scanning work;
s0115: the computer processing module judges whether the received radio frequency signal parameter is in a preset radio frequency signal parameter range, and if so, virtual sound source mapping processing with angle attributes is carried out according to the frequency spectrum information of the radio frequency signal; in this embodiment, the radio frequency signal parameters include radio frequency signal field strength, frequency, bandwidth, frequency offset, and modulation degree, which may be fixed radio frequency signal field strength, frequency, bandwidth, frequency offset, and modulation degree, or may be a certain percentage, such as 10%, of the average value of the above parameters of the whole frequency band signal; when the preset radio frequency signal parameter is more than one, the mapping action is triggered only when all the parameters of the radio frequency signal are within the preset radio frequency signal parameter range.
Further, in step S0115, the calculation formula for performing the auditory mapping process with the angle attribute by the radio frequency signal is:
wherein f is n Frequency value of frequency point to be mapped, f 0 Is the starting frequency value of the frequency band sweep, f 1 Is the termination frequency value of frequency band scanning, theta is the frequency point f n And mapping the corresponding virtual sound source angle.
S0116: the first audio playing device plays the virtual sound source signal with the angle attribute to position the target signal.
In step S0116, as an option, the values of the parameters of the frequency points in the spectrogram of the radio frequency signal can be displayed in a manner of relative volume or pitch, i.e., sound frequency, such as large field strength of the signal corresponding to large volume or pitch of the sound source, small field strength of the signal corresponding to small volume or pitch of the sound source, or both. As an option, the operator can choose to carry out voice broadcast to the frequency band maximum value or the specific parameters of the key frequency point such as frequency and field intensity value after the frequency band information is played every time, and the frequency and the field intensity value of the frequency point are played in a voice mode, so that the operator can know the accurate parameters of the target frequency point conveniently. As an option, the specific parameters of the signal can be directly broadcasted in a virtual sound source manner at the mapping angle of the signal, so that the intuitiveness of audio prompt is improved.
More specifically, in step S0116, as an option, the first audio playing device plays the virtual voice signal of the target radio frequency signal within the preset radio frequency signal parameter range, and plays the virtual voice signal in sequence according to the frequency of the target radio frequency signal, so that the operator can roughly master the frequency point condition found by the frequency band scanning in a blind listening manner, and the driving safety is not affected.
Specifically, the method for generating a virtual sound source signal with an angle attribute by comparing a received radio frequency signal parameter with a preset radio frequency signal parameter range through a hardware mode, namely an antenna, comprises the following steps:
s0121: presetting a radio frequency signal parameter range, and starting scanning work within a certain frequency range; wherein the radio frequency signal parameter has at least one.
S0122: the receiving antenna receives a radio frequency signal within a certain frequency range, the parameter of the radio frequency signal is within a preset radio frequency signal parameter range, and the radio frequency signal is transmitted to the monitoring receiver; in this embodiment, the radio frequency signal parameters include the field strength and frequency of the radio frequency signal, which may be fixed field strength and frequency values of the radio frequency signal; when the preset radio frequency signal parameter is more than one, the mapping action is triggered only when all the parameters of the radio frequency signal are within the preset radio frequency signal parameter range.
S0123: the monitoring receiver processes the radio frequency signal and outputs the frequency spectrum information of the radio frequency signal;
s0124: the computer processing module carries out virtual sound source mapping processing with angle attribute on the frequency spectrum information of the radio frequency signal; the calculation formula of the auditory mapping processing process with the angle attribute of the radio frequency signal is as follows:
wherein f is n Frequency value of frequency point to be mapped, f 0 Is the starting frequency value, f, of the frequency band sweep 1 Is the termination frequency value of frequency band scanning, theta is the frequency point f n And mapping the corresponding virtual sound source angle.
S0125: the first audio playing device plays the virtual sound source signal with the angle attribute to position the target signal. In step S0125, as an option, the parameter values of the frequency points in the spectrogram of the radio frequency signal can be correspondingly displayed in a manner of relative volume or pitch, i.e., sound frequency, such as large field intensity of the signal corresponding to large volume or high pitch of the sound source, small field intensity of the signal corresponding to small volume or low pitch of the sound source, or both. As an option, the operator can choose to perform voice broadcast on the frequency band maximum value or the specific parameters of the key frequency point, such as frequency and field intensity value, after the frequency band information is played each time, and the frequency and field intensity value of the frequency point are played in a voice mode, so that the operator can know the accurate parameters of the target frequency point conveniently. As an option, the specific parameters of the signal can be directly broadcasted in the mode of a virtual sound source at the mapping angle of the signal in a voice mode, and the intuitiveness of audio prompting is improved.
More specifically, in step S0125, as an option, the first audio playing device plays the virtual voice signal of the target radio frequency signal within the preset radio frequency signal parameter range, and plays the virtual voice signal sequentially according to the frequency of the target radio frequency signal, so that the operator can roughly grasp the frequency point conditions found by frequency band scanning in a blind listening manner, and the driving safety is not affected.
More specifically, the process of performing auditory mapping processing according to the frequency spectrum information of the radio frequency signal in this embodiment is as shown in fig. 3, and if the radio frequency signal happens to appear at the start frequency point of the frequency band scanning, that is, at the leftmost position of the spectrogram displayed by the monitoring device, the system can generate an audio signal for the driver to feel that the sound source is in the leftmost direction (set to 0 degrees) for playing; if the signal just appears at the termination frequency point of the frequency band scanning, namely the rightmost position of the spectrogram, the system can generate an audio signal for a driver to feel that a sound source is positioned at the rightmost direction (set as 180 degrees) for playing; if the frequency point is in the middle of the frequency band scanning, that is, in the middle of the spectrogram, the system can generate an audio signal which enables the driver to feel that the sound source is in the right front direction (set as 90 degrees) for playing. If there are signals at other positions on the spectrogram, the corresponding mapping process can be performed according to the positions of the signals on the spectrogram in a similar manner. The audio signal generation method of the virtual sound source with the specific designated angle is the existing mature virtual surround sound technology: such as HRTF (Head Related Transfer Function) 3D positioning audio technology based on HRTF Head Related Transfer Function, etc., the present invention does not discuss.
More preferably, the step of processing the direction-finding radio frequency signal in the direction-finding mapping mode comprises:
s11: fixed frequency direction finding;
s12: and carrying out virtual sound source mapping processing with angle attributes on the received radio frequency signals within the preset direction-finding radio frequency signal parameter range according to the direction-indicating degree information of the radio frequency signals to generate virtual sound source signals with the angle attributes.
In one implementation manner of this embodiment, the received radio frequency signal parameter is compared with a preset range of the direction-finding radio frequency signal parameter in a hardware manner, so as to generate a virtual sound source signal with an angle attribute.
In another implementation manner of this embodiment, the received direction-finding rf signal parameter is compared with a preset direction-finding rf signal parameter range in a software manner, so as to generate a virtual sound source signal with an angle attribute.
Further, as shown in fig. 4, the specific steps of comparing the received radio frequency signal parameter with the preset direction-finding radio frequency signal parameter range by a software mode, i.e. a computer processing module, and generating a virtual sound source signal with an angle attribute include:
s1111: presetting a direction-finding radio frequency signal parameter range, and starting fixed frequency direction finding work; at least one preset direction-finding radio frequency signal parameter is set.
S1112: the direction-finding antenna receives the radio frequency signal with fixed frequency and feeds the radio frequency signal back to the direction-finding receiver;
s1113: the direction-finding receiver processes the radio frequency signal to obtain the information parameters of the direction-finding degree, the field intensity, the frequency, the bandwidth, the frequency deviation, the modulation degree and the direction-finding quality value of the signal;
s1114: the computer processing module judges whether the direction-finding radio frequency signal parameter is in a preset direction-finding radio frequency signal parameter range, and if so, virtual sound source mapping processing with angle attribute is carried out according to the direction indication degree information of the radio frequency signal; and when the preset direction-finding radio frequency signal parameter is more than one, triggering the mapping action when all the parameters of the received radio frequency signal are within the preset direction-finding radio frequency signal parameter range.
S1115: the second audio playing device plays the virtual sound source signal with the angle attribute to position the target signal. In step S1115, as an option, parameters such as the field strength of the target radio frequency signal and the direction-finding quality may be correspondingly represented by using the volume or the pitch, i.e., the sound frequency; as an option, an operator can choose to perform voice broadcast on specific parameters of the target frequency point, such as frequency, field intensity and direction indication value, after each information play is finished, so that the operator can know the accurate direction-finding parameters of the target frequency point conveniently; as an option, the specific parameters of the signal can also be directly broadcasted in the form of a virtual sound source at the mapping angle of the signal, so that the intuitiveness of the audio prompt is improved.
In step S1115, the second audio playing device is configured to play a virtual sound source signal with an angle attribute, including a multi-channel car audio system, or an open-type headset with an electronic compass and a car-mounted electronic compass used in cooperation with the open-type headset.
Further, when the open-type headset with the electronic compass and the vehicle-mounted electronic compass used with the open-type headset compensate the head deviation angle of the user, the compensation calculation formula is as follows:
θ′＝θ 0 -(θ 1 -θ 2 )
wherein, theta' is the direction indicating value of the frequency point to be mapped, and theta 0 Indicating the direction value theta of the frequency point measured by the vehicle-mounted monitoring system 1 Head orientation compass angle readings, theta, measured for an electronic compass on the headset 2 And reading the angle of the vehicle head orientation compass measured by the vehicle-mounted electronic compass.
Further, the step of comparing the received direction-finding radio frequency signal parameter with the preset direction-finding radio frequency signal parameter range by a hardware mode, namely a direction-finding antenna, and generating the virtual sound source signal with the angle attribute specifically comprises the following steps:
s1121: presetting a direction-finding radio frequency signal parameter range, and starting fixed frequency direction finding work; at least one preset direction-finding radio frequency signal parameter is set.
S1122: the direction-finding antenna receives the radio frequency signal with fixed frequency, the parameter of the direction-finding radio frequency signal is in the preset range of the parameter of the direction-finding radio frequency signal, and the signal is fed to the direction-finding receiver; the direction-finding radio frequency signal parameters comprise signal field intensity and frequency; when the preset direction-finding radio frequency signal parameter is more than one, the mapping action is triggered when all the parameters of the radio frequency signal received by the direction-finding antenna are within the preset direction-finding radio frequency signal parameter range.
S1123: the direction-finding receiver processes the radio frequency signal to obtain direction-finding degree information of the radio frequency signal;
s1124: the computer processing module carries out virtual sound source mapping processing with angle attributes according to the direction indication degree information of the radio frequency signal;
s1125: the second audio playing device plays the virtual sound source signal with the angle attribute to position the target signal. In step S1125, as an option, the target radio frequency signal size and the direction-finding quality may be represented by volume or pitch, i.e. sound frequency, or the like; as an option, an operator can choose to perform voice broadcast on specific parameters of the target frequency point, such as frequency, field intensity and direction indication value, after each information play is finished, so that the operator can know the accurate direction-finding parameters of the target frequency point conveniently; as an option, the specific parameters of the signal can also be directly broadcasted in the manner of a virtual sound source at the mapping angle of the signal in a voice mode, so that the intuitiveness of audio prompt is improved.
More specifically, as shown in fig. 5, the mapping process is performed according to the directivity information of the radio frequency signal, and if the traveling direction of the vehicle is the north direction and is set to 0 °, the angle θ is the directivity of the target signal, and the virtual sound source angle mapping process is directly performed according to the directivity information of the signal, so that the virtual sound source direction heard by the operator and the direction of the radio signal source are made to coincide with each other.
In the embodiment, the operator can recognize the direction of the target signal source by hearing the prompt tone blindly, drive the monitoring vehicle to the target direction to approach and search, and finally determine the target position area by searching for the approach for multiple times.
Based on such understanding, the technical solution of the present embodiment or parts of the technical solution may be essentially implemented in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Example 2
The embodiment relates to a radio signal monitoring direction-finding processor based on auditory mapping, which is further optimized on the basis of the embodiment 1 and comprises a processor, and the processor executes the steps of the method when executing computer instructions.
Example 3
The embodiment relates to a radio signal monitoring direction-finding system based on auditory mapping, which is further optimized on the basis of the embodiment 1, and the system comprises: a spectrum mapping mode unit and an orientation degree mapping mode unit.
Further, the frequency spectrum mapping mode unit comprises a receiving antenna, a monitoring receiver, a computer processing module and a first audio playing device and does not have a direction-finding function.
Further, the first audio playing device can play virtual sound source signals with angle attributes, and comprises a multi-channel vehicle-mounted sound box system.
Further, the receiving antenna is used for receiving the radio frequency signal in the space and transmitting the signal to the monitoring receiver; the monitoring receiver is used for performing down-conversion A/D conversion, FFT conversion and other processing on signals received by the antenna and finally outputting frequency spectrum signals to realize functions of frequency band scanning and the like. And the computer processing module performs virtual sound source mapping processing with angle attributes according to the frequency spectrum information of the radio frequency signal. The first audio playing device plays the virtual sound source signal with the angle attribute to position the target signal.
Further, the computer processing module runs software supporting mapping processing and sound playing functions of the virtual surround sound technology.
As an option, the monitoring receiver can run software that supports the mapping process and sound playing functions of the virtual surround technology.
Furthermore, the direction-finding mapping mode unit comprises a direction-finding antenna, a direction-finding receiver, a computer processing module and a second audio playing device and has a direction-finding function.
Further, the second audio playing device can play the virtual sound source signal with the angle attribute, and comprises an open type headset with an electronic compass and an in-vehicle electronic compass matched with the open type headset for use.
Further, the direction-finding antenna is used for receiving the fixed frequency radio frequency signal and feeding the signal to the direction-finding receiver; the direction-finding receiver processes the received information and finally outputs the direction-finding degree information of the radio frequency signal; the computer processing module carries out virtual sound source mapping processing with angle attributes according to the direction indicating degree information of the radio frequency signal; the second audio playing device plays the virtual sound source signal with the angle attribute to position the target signal.
Further, the computer processing module runs software supporting mapping processing and sound playing functions of the virtual surround sound technology.
As an option, the direction-finding receiver can run software that supports the mapping process and sound playing functions of the virtual surround sound technique.
The above detailed description is for the purpose of describing the invention in detail, and it should not be construed that the detailed description is limited to the description, and it should be understood that various simple deductions and substitutions can be made by those skilled in the art without departing from the spirit of the invention.
Claims (8)
1. A radio signal monitoring direction-finding method based on auditory mapping is characterized in that the method comprises the steps of generating a virtual sound source signal with an angle attribute according to a monitored radio signal received by an antenna;
the monitored radio signals are radio frequency signals, and the virtual sound source mapping processing with the angle attribute on the radio frequency signals comprises radio frequency signal processing in a frequency spectrum mapping mode and/or direction-finding radio frequency signal processing in a direction-finding degree mapping mode;
the method comprises a radio frequency signal processing step in a frequency spectrum mapping mode and/or a direction-finding radio frequency signal processing step in a direction-finding degree mapping mode;
the radio frequency signal processing step in the spectrum mapping mode comprises:
frequency band scanning;
carrying out virtual sound source mapping processing with angle attributes on received radio frequency signals within a preset radio frequency signal parameter range according to frequency spectrum information of the radio frequency signals to generate virtual sound source signals with angle attributes;
the direction-finding radio frequency signal processing step in the direction-finding degree mapping mode comprises the following steps:
fixed frequency direction finding;
and carrying out virtual sound source mapping processing with angle attributes on the received radio frequency signals within the preset direction-finding radio frequency signal parameter range according to the direction-indicating degree information of the radio frequency signals to generate virtual sound source signals with the angle attributes.
2. An auditory mapping-based radio signal monitoring direction-finding method according to claim 1, wherein the virtual sound source signal represents the target radio frequency signal parameter by volume magnitude and/or tone high-low correspondence.
3. The auditory mapping-based radio signal monitoring and direction-finding method of claim 1, wherein the preset radio signal parameters include radio signal field strength, frequency, bandwidth, frequency offset, modulation degree; the preset direction-finding radio frequency signal parameters comprise signal direction-finding degree, field intensity, frequency, bandwidth, frequency deviation, modulation degree and a direction-finding quality value; when the preset signal parameter is more than one, triggering the mapping action when all parameters of the radio frequency signal are in the preset signal parameter range; the preset signal parameters comprise preset radio frequency signal parameters and preset direction-finding radio frequency signal parameters.
4. The auditory mapping-based radio signal monitoring and direction finding method according to claim 1, wherein the formula of the spectrum mapping mode for performing the virtual sound source mapping process with angle attribute according to the spectrum information of the radio frequency signal is as follows:
wherein, f n Frequency value of frequency point to be mapped, f 0 Is the starting frequency value, f, of the frequency band sweep 1 For end of frequency band scanningStop frequency value theta is frequency point f n And mapping the corresponding virtual sound source angle.
5. The auditory mapping-based radio signal monitoring direction-finding method according to claim 1, characterized in that the frequency spectrum information of the radio frequency signal is generated by a monitoring receiver, the input end of which is connected with a receiving antenna; the direction-finding information of the radio frequency signals is generated by a direction-finding receiver, and the input end of the direction-finding receiver is connected with a direction-finding antenna.
6. An auditory mapping-based radio signal monitoring direction-finding method according to claim 1, characterized in that the virtual sound source signal generated in the spectrum mapping mode is played by a first audio playing device; the virtual sound source signal generated in the direction indicating degree mapping mode is played by second audio playing equipment; the first audio playing device is used for playing virtual sound source signals with angle attributes and comprises a multi-channel vehicle-mounted sound box system; the second audio playing device is used for playing virtual sound source signals with angle attributes and comprises a multi-channel vehicle-mounted loudspeaker box system or an open-type headset with an electronic compass and a vehicle-mounted electronic compass matched with the open-type headset.
7. The auditory mapping-based radio signal monitoring direction-finding method of claim 6, wherein the open-type headset with electronic compass and the vehicle-mounted electronic compass used with the open-type headset compensate the head deviation angle of the user by the following formula:
θ ′ ＝θ 0 -(θ 1 -θ 2 )
wherein, theta ′ The method comprises the steps of displaying a direction value of a frequency point to be mapped, wherein theta 0 is the direction value of the frequency point measured by a vehicle-mounted monitoring system, theta 1 is a head orientation compass angle reading measured by an electronic compass on an earphone, and theta 2 is a head orientation compass angle reading measured by the vehicle-mounted electronic compass.
8. A processor, characterized in that it executes computer instructions to perform the steps of the method of any of claims 1 to 7.
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