KR102066240B1 - Error detecting and operation analysis apparatus of navigation aids and method the same - Google Patents

Abstract

The present invention discloses an apparatus and method for error verification and operation analysis of a navigation safety facility.
An error verification and operation analysis apparatus of a navigation safety facility according to an embodiment of the present invention is to determine at least one signal receiving module for receiving a frequency signal transmitted from the navigation safety facility, whether or not the normal transmission of the frequency signal, and the cause of abnormal transmission A signal inspection device that verifies the frequency signal transmitted from the navigation safety facility according to the normal transmission criterion information of the frequency signal set in order to transmit the information on whether the frequency signal is normally transmitted and the cause of the abnormal transmission, and the at least one A signal receiving module, and a fixing member configured to mount and fix the signal inspecting device so that the at least one signal receiving module and the signal inspecting device are arranged at a predetermined test position, thereby verifying and operating a navigation safety facility. And management efficiency.

Description

ERROR DETECTING AND OPERATION ANALYSIS APPARATUS OF NAVIGATION AIDS AND METHOD THE SAME

The present invention enables the reception and verification of frequency signals transmitted from a navigation safety facility such as a tactical navigation facility on the ground, and by providing an operator with a criterion for determining normal transmission of frequency signals, such as verification and maintenance of a navigation safety facility. The present invention relates to a device and method for error inspection and operation analysis of a navigation safety facility to improve management / operational efficiency.

NAVigation AIDS is the collective name for facilities installed to assist and assist the navigation of aircraft through radio waves, lights, colors and shapes.

Navigation safety facilities are used in all phases of aircraft taking off and navigating the airport and landing back at the airport, and the use and assistance of these navigation safety facilities allows pilots to operate the aircraft safely even at low visibility. Such a navigation safety facility may be classified into a navigation safety radio using radio waves, an aviation lighting facility using lights, and an air traffic control communication facility transmitting and receiving information by voice.

Among these, navigation safety radio facilities use various kinds of radio equipment installed on the ground to provide information (for example, frequency signals) necessary for the aircraft in all processes from taking off, operating, and landing to the aircraft. Such a navigation safety radio can support the automatic landing of the aircraft by allowing the controller to know the information such as the location, altitude, speed, flight number of the aircraft, and display the radio wave emitted from the ground during the landing. .

Navigation safety radios include Localizer, Glide Path, Marker Beacon, Distance Measuring Equipment, VHF Omnidirectional radio Range, Microwave Omnidirectional Range Beacon (Very high frequency Omnidirection Radio range), Tactical Air Navigation system, Non-Directional radio Beacon and the like are used.

For example, in the case of the tactical navigation facility, the position signal is transmitted as a radio frequency signal from the ground in all directions, so that the position, distance, and azimuth angle can be checked from the aircraft in flight. Such a tactical navigation facility has a technical feature in that distance information and bearing information can be integrated and identified as a frequency signal.

The tactical navigation system can distinguish the distance information and the azimuth information by the pulse code of the frequency signal. The channel configuration of the tactical navigation system depends only on the frequency. Therefore, since the frequency signal transmitted from the navigation safety radio including the tactical navigation system is directly connected to the safety of the aircraft, it should be managed so that it is always transmitted accurately without being distorted.

However, in the past, the verification process was difficult, time-consuming and expensive, because the frequency signals transmitted from each navigation safety facility had to be validated only by the aircraft of the national inspection agency equipped with the equipment for detecting and verifying the frequency signals. There was a problem.

In addition, when an aircraft in flight detects an error such as position information or azimuth information, the repair and maintenance efficiency of the aircraft cannot be confirmed because it is not possible to immediately determine whether the frequency signal transmitted from the ground is an error of the aircraft itself. .

The present invention is to solve the above problems, to enable the reception and verification of the frequency signals transmitted from the navigation safety facilities, such as tactical navigation facilities on the ground, and to determine the normal transmission criteria of the frequency signal ground navigation safety facility operators The purpose of the present invention is to provide an apparatus and method for error inspection and operation analysis of a navigation safety facility that can improve the operation / management efficiency, such as verification and maintenance of the navigation safety facility.

In order to achieve the above technical problem, an error inspection (hereinafter referred to as a navigation safety facility error check) and an operation analysis device for a function of a navigation safety facility may receive a frequency signal transmitted from a navigation safety facility. Validate the frequency signal transmitted from the navigation safety facility according to the at least one signal receiving module, whether the frequency signal is normally transmitted, and the normal transmission judgment reference information of the frequency signal set to determine the cause of the abnormal transmission. , And a signal inspecting device for transmitting information on the cause of abnormal transmission, and at least one signal receiving module and a signal inspecting device to be mounted and fixed so that the at least one signal receiving module and the signal inspecting device are placed at a preset test position. It includes a fixing member for positioning.

In addition, the error inspection method of the navigation safety facility according to an embodiment of the present invention for achieving the technical problem as described above, the at least one signal receiving module, and the signal inspection device at a predetermined inspection position using at least one fixing member. Arranging, receiving a frequency signal transmitted from a preset navigation safety facility using at least one signal receiving module, determining whether the frequency signal is normally transmitted, and determining the normal transmission of the frequency signal set to determine the cause of abnormal transmission. Verifying the frequency signal transmitted from the navigation safety facility by at least one signal inspection device according to the reference information, and transmitting information on whether the frequency signal is normally transmitted and the cause of abnormal transmission according to the verification result. do.

An error inspection apparatus and method of a navigation safety facility according to an embodiment of the present invention having various technical features as described above can receive and verify a frequency signal transmitted from a navigating facility on the ground. Improve management efficiency, such as minimizing manpower consumption.

In addition, by providing the operator with the normal transmission criterion and operation status of the frequency signal transmitted from the navigation safety facility, to ensure the accuracy and reliability of the navigation safety facility by maintaining the accuracy of the frequency signal transmitted in real time, and It has the effect of increasing operational efficiency.

1 is a view showing an application example of the navigation safety facility and the error verification apparatus according to an embodiment of the present invention.
FIG. 2 is a configuration diagram illustrating an installation configuration of the error verification apparatus illustrated in FIG. 1.
FIG. 3 is a block diagram illustrating in detail the signal inspecting apparatus illustrated in FIG. 2.
4 is a display screen of frequency signals and analysis results related to frequency signals visualized in the monitoring unit of FIG. 3.
FIG. 5 is a block diagram illustrating in detail the comparison analyzer of FIG. 3.
FIG. 6 is a diagram illustrating detection information detected by the comparison analyzer of FIG. 3.
7 is a block diagram illustrating in detail the result analyzer of FIG. 3.
FIG. 8 is a time-varying amplitude change display screen of a frequency signal visualized in the monitoring unit of FIG. 3.
FIG. 9 is a waveform enlargement screen of a specific frequency range visualized on the result analysis screen of FIG. 8.
FIG. 10 is an analysis screen in which a modulation degree for each frequency is numerically calculated as shown in FIG. 7.
FIG. 11 is an analysis screen in which azimuth angles of respective frequencies of the result analyzer shown in FIG. 7 are digitized.
12 is a frequency distribution change analysis screen for each frequency of the result analyzer shown in FIG. 7.

Configurations shown in the embodiments and drawings described herein are only one of the most preferred embodiments of the present invention, and do not represent all of the technical spirit of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

Hereinafter, an error verification and operation analysis apparatus and method of a navigation safety facility according to the present invention will be described.

1 is a view showing an application example of the error verification and operation analysis device of the navigation safety facility according to an embodiment of the present invention.

Navigation safety facilities, such as omnidirectional distance measurement, microwave omnidirectional range beacons, and tactical navigational facilities, are each installed at a predetermined route location to support safe navigation of the aircraft.

In the case of microwave omni-directional beacons, they are installed in relatively high places on the ground and transmit radio signals in all directions. The outgoing radio signal indicates a certain preset direction or an air route so that the aircraft can follow the radio signal. These microwave omnidirectional beacons are divided into air routes and airports, and the effective range is usually within 200 nm.

In the case of an omnidirectional distance measurement facility, the pilot shall be provided with an oblique distance between the aircraft and the omnidirectional distance measurement facility. Typically, omnidirectional distance measuring facilities are installed with microwave omnidirectional range beacons. The distance of the omni-directional marker is expressed in nm and is 5.8 nm when an aircraft flying at approximately 35,000 ft is located above the omni-directional marker.

Tactical navigation facilities are used for air navigation guidance for air routes and provide bearing and distance information to aircraft using equipment in the UHF band. The tactical navigation system can distinguish distance information and azimuth information by using a pulse code of a frequency signal. The tactical navigation system is less affected by jammers and has a small measurement error, thereby ensuring its accuracy, thereby increasing usability. In addition, the tactical navigation system is easy to install because the impact of the installation terrain is reduced, the volume is smaller, and the operation of the ground equipment is more stable than other navigation safety facilities have many advantages.

The error verification device (WP) is installed at a specific location on the ground and receives radio waves (for example, radio frequency signals) transmitted from navigation safety facilities such as microwave omnidirectional range beacons, omnidirectional marking facilities, and tactical navigation facilities. And verify the error. To this end, the error verifying device WP may be installed in a place where it is easy to receive a frequency signal from a specific navigation safety facility to be inspected, as necessary.

The error verification apparatus WP automatically receives a frequency signal from a specific tactical navigation facility TC according to a verification command or a preset verification period from an operator and verifies whether an error has occurred, and then whether the frequency signal is normally transmitted. Provide the operator with data and analysis result about the cause of abnormal transmission. In addition, the error verification apparatus WP may accumulate and develop a normal transmission determination criterion for the frequency signal set to determine whether the frequency signal is normally transmitted and the cause of the abnormal transmission.

Hereinafter, an example of an error verification apparatus WP for receiving and verifying a frequency signal of the tactical navigation facility WP among various types of navigation safety facilities will be described in detail.

FIG. 2 is a configuration diagram illustrating an installation configuration of the error verification apparatus illustrated in FIG. 1.

Referring to FIG. 2, the error verification apparatus WP receives a frequency signal from a specific tactical navigation facility TC. To this end, the error verification device (WP) is a physical feature between a high altitude terrain or feature or a specific tactical navigation facility (TC) and the signal receiving module 110 of the error verification device (WP) to verify whether an error has occurred. It can be configured in a space free of obstructions (eg, mountains, buildings). The error verification apparatus WP includes at least one signal receiving module 110, a signal inspecting apparatus WO, and a fixing member AO.

In detail, the at least one signal receiving module 110 receives a frequency signal transmitted from a specific navigation safety facility such as a tactical navigation facility TC, and may also receive a GPS signal from a GPS satellite if necessary. The at least one signal receiving module 110 may be assembled with the signal inspecting device (WO) and connected by wire, or may be integrally formed with the signal inspecting device (WO), or may be integrally formed with the signal inspecting device (WO). May be connected wirelessly.

The signal inspecting apparatus (WO) samples and verifies the frequency signal transmitted from the navigation safety facility in accordance with a predetermined criterion for normal transmission of the frequency signal in order to determine whether or not the frequency signal is normally transmitted. In addition, information about whether or not the normalized transmission of the verified frequency signal and the cause of abnormal transmission is sent to the operator.

To this end, the signal inspecting apparatus (WO) may use at least one microcontroller unit (MCU), a field programmable gate array (FPGA), a central processing unit (CPU) including a microprocessor, and the like according to a preset program. The frequency signal received through the at least one signal receiving module 110 is verified.

The signal inspection device (WO) may be configured as a laptop, a personal PC, a tablet mobile communication device, etc., capable of program installation and processing control. Accordingly, the signal inspecting apparatus (WO) processes the frequency signal received through the at least one signal receiving module 110 according to a preset program, and transmits the frequency transmitted from the tactical navigation equipment TC through amplitude and frequency demodulation. The modulation degree of the signal, the degree of frequency shift and variation, the azimuth angle, the amplitude change of frequency signals for different bands, and the presence of interference can be verified. The configuration of the signal inspecting apparatus (WO) and the processing method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

The fixing member AO includes at least one signal receiving module 110 and a tripod so that the signal checking device WO is mounted and fixed, and the at least one signal receiving module 110 and the signal checking device WO ) Can be fixedly placed at a preset verification position.

FIG. 3 is a block diagram illustrating in detail the signal inspecting apparatus illustrated in FIG. 2.

Referring to FIG. 3, the signal inspection apparatus WO of the present invention includes at least one first and second signal receiving module 110, a monitoring unit 200, a database 300, a comparison analyzer 400, The result analyzer 500, the monitor controller 600, and the interface 700 may be included.

In detail, the at least one first signal receiving module 110 receives a frequency signal from a specific navigation safety facility such as the tactical navigation facility TC through the first antenna 111, performs a digital conversion process, and compares and analyzes the signal. Send to 400. The first signal receiving module 110 filters, amplifies, and samples the frequency signal received through the first antenna 111, and then A / D converts the signal to be transmitted to the monitor controller 600 and the comparison analyzer 400. Can be. To this end, the first signal receiving module 110 may include a filter, an amplifier, an MCU, an A / D converter, and the like.

The second signal receiving module 120 receives the GPS signal of the satellite through the second antenna 121, digitally converts it, and transmits the GPS signal to the comparison analyzer 400. The second signal receiving module 120 filters, amplifies, and samples the GPS signal received through the second antenna 121, and then converts the A / D signal to the monitor controller 600 and the comparison analyzer 400. Can be. To this end, the first signal receiving module 110 may also include an MCU, an A / D converter, and the like.

The database 300 stores normal transmission determination reference information set through the interface unit 700 and shares it with the comparison analyzer 400, the result analyzer 500, and the like. The data measured in the past, that is, data necessary for error verification and operational analysis, such as past measurement and analysis data, may be stored, and read again when necessary to be displayed in the monitoring unit 200. Here, the normal transmission determination reference information is preset reference information to determine whether the normal and abnormal transmission of the frequency signal input and sampled in real time.

The comparison analyzer 400 demodulates an amplitude or a frequency signal from a frequency signal sampled in real time through the first signal receiving module 110 and compares the demodulated frequency signal with normal transmission determination reference information. In detail, the comparison analyzer 400 classifies the frequency signals received through the first signal receiving module 110 for each frequency band and detects modulation degrees, frequency shift amounts, and frequency shift amounts for each frequency band. The detected modulation rate, frequency shift amount, and frequency shift amount for each frequency band are compared with reference modulation degree, reference frequency shift amount, and reference frequency shift amount of preset normal transmission determination reference information.

In addition, the comparison analysis unit 400 analyzes the frequency signal to analyze the distance information and location information with the navigation safety facility, and calculates and processes the GPS signal received through the second signal receiving module 120 to the current location information And the result may be transmitted to the result analyzing unit 500 and the monitor control unit 600.

The result analyzer 500 generates information on whether the frequency signal is normally transmitted and the cause of abnormal transmission according to the frequency signal comparison result analyzed by the comparison analyzer 400, and monitors the result of the monitor control unit 600 and the interface unit. Send to 700.

Specifically, the result analysis unit 500 is a reference modulation degree, reference frequency shift amount, reference frequency according to the modulation frequency, frequency shift amount, frequency shift amount, and normal transmission determination reference information detected by the frequency analysis band 400 Quantify numerically by analyzing differences in variation. According to the difference, the degree of modulation of the frequency signal of each band, the degree of frequency shift and variation, the azimuth, and the amplitude change and amplitude shape of the frequency signal of each band can be verified. As a result of the verification, information on whether the frequency signal of each band is normally transmitted and information on the cause of abnormal transmission may be derived and determined.

In addition, the result analysis unit 500 compares and analyzes the current position information using the position information detected by the comparison analysis unit 400 and the GPS signal, and whether the frequency signal is normally transmitted or abnormally transmitted according to the comparison result of the position information. Information about the cause can be derived and judged.

4 is a display screen of frequency signals and analysis results related to frequency signals visualized in the monitoring unit of FIG. 3.

3 and 4, the monitoring unit 200 controls the frequency signal, the GPS signal information, and the normal transmission determination reference information of the frequency signal through the first signal receiving module 110 under the control of the monitor controller 600. According to the amplitude and frequency of the frequency signal to be verified according to the visualization, and whether or not the normal transmission of the frequency signal, the information on the cause of the abnormal transmission, etc. is converted into visual information and displayed on the screen.

The monitor controller 600 may display the frequency signal, the GPS signal information, the frequency signal in a state of being verified according to the normal transmission determination reference information of the frequency signal, whether the frequency signal is normally transmitted, and the cause of abnormal transmission on the screen of the monitoring unit 200. Control information to be displayed selectively. To this end, the monitor controller 600 may include at least one graphics card, a timing controller, an FPGA, and the like.

Meanwhile, the interface unit 700 transmits information on whether the frequency signal is normally transmitted and the cause of abnormal transmission to the operator, and presets and stores the normal transmission determination reference information of the frequency signal in the database 300 in advance. Here, the normal transmission criterion information of the frequency signal may include information previously set and provided by a standardization agency or a national inspection agency for navigation management, and data accumulated and developed by the present invention device. Accordingly, the operator can control each navigation safety facility to transmit a frequency signal in a range that satisfies the normal transmission determination criteria information provided from the national inspection agency. In addition, the signal inspection apparatus (WO) may be programmed to determine whether the frequency signal is normally transmitted and the cause of the abnormal transmission, according to a range that meets the normal transmission decision criterion information.

FIG. 5 is a block diagram illustrating in detail the comparison analyzer of FIG. 3.

Referring to FIG. 5, the comparison analyzer 400 includes an amplitude / frequency modulator 410, a frequency shift / variation detector 430, a comparator 440, and an azimuth display unit 450.

The amplitude / frequency modulation unit 410 classifies the frequency signal received through the first signal receiving module 110 for each frequency band and demodulates the amplitude or frequency of the frequency signal for each band. For example, the amplitude / frequency modulation unit 410 may use a modulator when transmitting frequency signals for each band. However, when receiving through the first signal receiving module 110, it can be demodulated according to the amplitude of the signal to transmit the amplitude of the frequency signal for each band using a demodulator.

FIG. 6 is a diagram illustrating detection information detected by the comparison analyzer of FIG. 3.

As shown in FIG. 6, the frequency signal of the tactical navigation facility TC received through the first signal receiving module 110 to the amplitude / frequency modulation unit 410 is a frequency signal of 15 Hz band and a frequency signal of 135 Hz band. May be a combined signal. Accordingly, the amplitude / frequency modulator 410 detects the frequency signal received through the first signal receiving module 110 into a frequency signal of 15 Hz band and a frequency signal of 135 Hz band, and then detects the frequency signal of the 15 Hz band. Demodulate the frequency signals in the 135 Hz band respectively.

The modulation degree detector 420 detects a modulation degree of frequency signals for each frequency band demodulated by the amplitude / frequency modulator 410. The detected modulation degree is an amount representing the modulation depth in amplitude modulation, and can be detected by a preset modulation degree and modulation rate detection formula. Accordingly, the modulation degree detection unit 420 detects the modulation degree and the modulation rate for each frequency signal of the 15 Hz band and the frequency signal of the 135 Hz band.

The frequency shift / shift detector 430 detects a frequency shift amount and a shift amount of frequency signals for each frequency band demodulated by the amplitude / frequency modulator 410. The frequency shift amount and the shift amount are detected by dividing the frequency signal in the 15 Hz band and the frequency signal in the 135 Hz band using a preset table or a detection equation.

The azimuth display unit 450 transmits the azimuth information to the monitor controller 600 so that the azimuth information calculated using the GPS coordinates received and processed by the GPS receiving module 120 can be displayed.

The comparison unit 440 compares the detected modulation rate, frequency shift amount, and frequency shift amount for each frequency band with reference modulation degree, reference frequency shift amount, and reference frequency shift amount of preset normal transmission determination reference information. The result of the comparison is transmitted to the result analyzing unit 500 and the monitor control unit 600.

On the other hand, the comparison unit 440 analyzes the distance information and the location information with the tactical navigation facility (TC) through the frequency signal of the 15 Hz band and the frequency signal of 135 Hz band, and received through the second signal receiving module 120 Identify the current location information calculated by GPS signal. In addition, distance information with the tactical navigation facility TC analyzed through the frequency signal and current position information detected through the GPS signal may be transmitted to the result analyzer 500 and the monitor controller 600.

7 is a block diagram illustrating in detail the result analyzer of FIG. 3.

The result analyzer 500 illustrated in FIG. 7 includes a modulation degree analyzer 510, a frequency shift analyzer 520, a frequency shift analyzer 530, an azimuth analyzer 535, and a numerical quantizer 540. , And cause derivation unit 550.

Specifically, the modulation degree analysis unit 510 analyzes a comparison result of the modulation degree of the frequency signal for each band of the frequency signal received from the tactical navigation facility TC and the reference modulation degree of the normal transmission determination reference information to determine the modulation degree difference value. To calculate.

When the frequency signal received through the first signal receiving module 110 includes a frequency signal of the 15 Hz band and a frequency signal of the 135 Hz band, the modulation degree according to the frequency signal of the 15 Hz band and the frequency signal of the 135 Hz band is normal transmission determination reference information. It is compared with the reference modulation degree of. Thus, the modulation degree analysis unit 510 calculates the respective modulation degree difference value by comparing the reference modulation degree of the normal transmission determination reference information for each frequency signal of the 15 Hz band and the frequency signal of the 135 Hz band.

The frequency shift amount analysis part 520 analyzes the result of comparing the frequency shift amount of the frequency signal for each band of the frequency signal received from the tactical navigation facility (TC) and the reference frequency shift amount of the normal transmission determination reference information, and the difference in the shift amount. Calculate the value.

The frequency shift amount analysis unit 530 calculates a shift amount difference value by analyzing a result of comparing the frequency shift amount of the frequency signal for each band of the frequency signal received from the tactical navigation facility and the reference frequency shift amount of the normal transmission determination reference information. .

The azimuth analyzer 535 compares the azimuth angle extracted from the frequency signal received from the tactical navigation facility TC with the azimuth calculated from the azimuth display unit 450, and calculates a difference value.

The numerical quantifier 540 may include a modulation degree difference value calculated by the modulation degree analyzing unit 510, a shift amount difference value calculated by the frequency shift amount analyzing unit 520, a frequency shift amount analyzing unit 530, or an azimuth analysis unit ( The difference amount difference calculated in step 535 is numerically quantified to be displayed on the monitoring unit 200.

The cause derivation unit 550 is a modulation degree, a frequency shift amount, a shift amount, a modulation degree difference value calculated by the modulation degree analysis unit 510 of the frequency signal of each band of the frequency signal received from the tactical navigation facility TC, The shift amount difference value calculated by the frequency shift amount analysis unit 530 or the azimuth analysis unit 535 and the shift amount difference value calculated by the frequency shift amount analysis unit 530 are analyzed. The information on the normal transmission of the frequency signal transmitted from the tactical navigation facility TC and the cause of the abnormal transmission is derived and determined according to the analysis result.

In addition, the cause derivation unit 550 compares and analyzes the current position information through the position information detected by the comparison analysis unit 400 and the GPS signal, and whether the frequency signal is normally transmitted or abnormally transmitted according to the comparison result of the position information. Information about the cause can be derived and judged.
FIG. 8 is a time-varying amplitude change display screen of a frequency signal visualized in the monitoring unit of FIG. 3.
As described above, the frequency signal A11 of the tactical navigation facility TC received by the amplitude / frequency modulator 410 is a combination of the frequency signal A00 of the 15 Hz band and the frequency signal A01 of the 135 Hz band. Can be. Thus, the monitoring unit 200 and the monitor control unit 600 of the present invention to display the frequency signal (A11) analyzed in the comparison analysis unit 400, and to form a frequency signal The combined 15Hz frequency signal A00 and 135Hz frequency signal A01 are both displayed on the monitoring unit 200.

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The modulation degree analysis unit 510 and the cause derivation unit 550 identify and monitor the frequency signal A00 of the 15 Hz band and the frequency signal A01 of the 135 Hz band, and monitor the frequency signal A00 of the 15 Hz band and the 135 Hz band. As the modulation width of the frequency signal A01 changes, an error and a cause of the error of the frequency signal may be analyzed.
FIG. 9 is a waveform enlargement screen of a specific frequency range visualized on the result analysis screen of FIG. 8.
As shown in FIG. 9, in the modulation degree analysis unit 510 and the cause derivation unit 550, at least one of the frequency signal A00 of the 15 Hz band and the frequency signal A01 of the 135 Hz band is monitored by the monitoring unit ( 200 may be enlarged and displayed. For example, by displaying and enlarging the individual pulse signals constituting the 15 Hz frequency band signal and the 135 Hz band frequency signal, the user can analyze them.

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The modulation degree analysis unit 510 and the cause derivation unit 550 detect a distorted portion of at least one of the frequency signal A00 of the 15 Hz band and the frequency signal A01 of the 135 Hz band, thereby distorting the frequency waveform. You can analyze the cause of the error.

For example, as shown in FIG. 9, when the waveform of the frequency signal A00 in the 15 Hz band is bleeding or sagging at a specific time point, the distortion is seen. The frequency signal A00 in the 15 Hz band may be broken as reflected by a specific terrain or feature. In this case, although the frequency signal transmitted from the tactical navigation facility TC is transmitted without error, it can be confirmed that it may be reflected and distorted by an obstacle at a specific position.
FIG. 10 is an analysis screen in which a modulation degree for each frequency is numerically calculated as shown in FIG. 7.

Referring to FIG. 10, the modulation degree analyzer 510 configured in the result analyzer 500 may have a distribution of modulation degree 10 (a) and a frequency of 135 Hz for a 15 Hz frequency signal of a frequency signal received from the tactical navigation facility TC. The modulation degree distribution 10 (b) of the frequency signal is demonstrated to provide analysis information.

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When the frequency signal received through the first signal receiving module 110 includes a frequency signal in the 15 Hz band and a frequency signal in the 135 Hz band, the modulation degree of each of the frequency signals in the 15 Hz and 135 Hz bands is the reference modulation of the normal transmission determination reference information. Compared to Accordingly, the modulation degree analysis unit 510 calculates respective modulation degree difference values by comparing the reference modulation degree of the normal transmission determination reference information with respect to the frequency signal of the 15 Hz band and the frequency signal of the 135 Hz band, respectively. The result analyzer 500 may determine a cause of a problem due to a poor transmission, reflection, poor reception, obstacles, etc. of the frequency signals of the 15 Hz and 135 Hz bands according to the difference between the modulation degree and the reference modulation degree of each frequency band.

FIG. 11 is an analysis screen in which azimuth angles of respective frequencies of the result analyzer shown in FIG. 7 are digitized.

Referring to FIG. 11, the result analyzer 500 analyzes the frequency signal received from the tactical navigation facility TC to analyze distance information with the navigation safety facility and the azimuth angle 11 (a), and determines normal transmission. It compares with the azimuth angle 11 (b) information based on reference | standard information.

When the frequency signal received through the first signal receiving module 110 includes a frequency signal in the 15 Hz band and a frequency signal in the 135 Hz band, the 15 Hz frequency signal azimuth 11 (a) and the frequency signal azimuth 11 in the 135 Hz band 11 (b)) The distribution is compared with the azimuth calculated by a preset azimuth of the normal transmission criterion reference information or a GPS signal displayed on the azimuth display unit 450. The preset azimuth information or the calculated azimuth information may be preset according to the distance between the tactical navigation facility TC and the error verification apparatus WP and the installation position of the error verification apparatus WP.

Accordingly, the result analysis unit 500 calculates respective azimuth difference values by comparing the reference azimuth information 11 (b) of the normal transmission determination reference information with respect to the frequency signal of the 15 Hz band and the frequency signal of the 135 Hz band, respectively. The result analysis unit 500 transmits a defective or reflected frequency signal in the 15 Hz and 135 Hz bands according to the difference between the azimuth angles 11 (a) and 11 (b) of each frequency band and a preset or calculated azimuth angle. , Information about a cause of a problem due to poor reception, an obstacle, that is, whether a frequency signal is normally transmitted, and a cause of abnormal transmission may be derived and determined.

12 is a frequency distribution change analysis screen for each frequency of the result analyzer shown in FIG. 7.

The frequency shift amount analysis unit 520 is a frequency shift amount 12 (a) for the frequency signal for each 15Hz band of the frequency signal received from the tactical navigation facility TC, and a shift amount 12 (b) for the 135Hz frequency signal. ) Analyze the comparison result to calculate the difference difference value and show the distribution of the difference value.

In addition, the frequency shift amount analysis unit 530 analyzes the result of comparing the frequency shift amount of the frequency signal for each band of the frequency signal received from the tactical navigation facility (TC) and the reference frequency shift amount of the normal transmission determination reference information to determine the shift amount difference value. Calculate

The cause derivation unit 550 analyzes all of the difference amount difference value calculated by the frequency shift amount analysis unit 520 and the shift amount difference value calculated by the frequency shift amount analysis unit 530. In addition, according to the analysis result, the cause of the problem caused by poor transmission, reflection, poor reception, obstacle, etc. of the frequency signal in the 15 Hz and 135 Hz bands according to the difference value of the transition / variation of the frequency signal transmitted from the tactical navigation facility (TC). Information on whether the normal transmission and the cause of the abnormal transmission can be derived and determined.

As described above, the apparatus and method for error inspection and operation analysis of a navigation safety facility according to an embodiment of the present invention enables receiving and verifying a frequency signal transmitted from a tactical navigation facility on the ground, thereby verifying time and cost and Improve management efficiency, such as minimizing manpower consumption.

In addition, by providing the operator with a standard for determining the normal transmission of the frequency signal transmitted from the navigation safety facility, it is possible to increase the accuracy and reliability of the navigation safety facility, such that the accuracy of the frequency signal transmitted in real time can be maintained.

Although the present invention has been described with reference to the embodiments illustrated in the drawings, it is merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

WO: signal inspection device
110: first signal receiving module
120: second signal receiving module
200: monitoring unit
300: database
400: comparative analysis
500: result analysis unit
600: monitor control unit
700: interface unit

Claims (10)

At least one signal receiving module for receiving a frequency signal transmitted from a navigation safety facility;
The frequency signal transmitted from the navigation safety facility is verified according to the normal transmission judgment reference information of the frequency signal set to determine whether the frequency signal is normally transmitted and the cause of the abnormal transmission. A signal inspection device for performing analysis on a transmission cause and transmitting analysis result information; And
The at least one signal receiving module and the signal inspecting device are mounted and fixed so as to place the at least one signal receiving module and the signal inspecting device at a preset test position,
The signal inspection device
A comparison analysis unit for comparing and analyzing a frequency modulation degree, a frequency shift amount and a shift amount, and an azimuth angle with respect to the frequency signal by using the normal transmission determination reference information; And
And a monitoring unit for visualizing and displaying a waveform, an amplitude, a frequency, a frequency modulation degree, a frequency shift amount and a shift amount, and an azimuth angle with respect to a frequency signal compared and analyzed according to the normal transmission determination reference information.
Error verification and operation analysis device for navigation safety facilities.
The method of claim 1,
The signal inspection device
At least one first signal receiving module receiving and digitally converting a frequency signal from the navigation safety facility through a first antenna;
A second signal receiving module for receiving and digitally converting a GPS signal through a second antenna;
A database for storing and sharing data necessary for error verification and operational analysis in advance such as normal transmission criterion information of the frequency signal, past measurement and analysis data;
Further comprising a result analysis unit for outputting information on whether or not the normal transmission of the frequency signal, and the cause of the abnormal transmission according to the comparison analysis result of the frequency signal compared and analyzed by the comparison analysis unit
Error verification and operation analysis device for navigation safety facilities.
The method of claim 2,
The signal inspection device
A monitor for controlling the frequency signal, the GPS signal information, the frequency signal in a state verified according to the normal transmission criterion information of the frequency signal, whether or not the frequency signal is normally transmitted, and information on the cause of abnormal transmission to be displayed on the monitoring unit; Control unit;
And an interface unit which transmits information on whether the frequency signal is normally transmitted and the cause of abnormal transmission to an operator and stores the normal transmission judgment reference information of the frequency signal in the database.
Error verification and operation analysis device for navigation safety facilities.
The method of claim 3, wherein
The comparative analysis unit
An amplitude / frequency modulator for dividing the frequency signal received through the first signal receiving module for each frequency band and demodulating the amplitude of the frequency signal for each band;
A modulation degree detector for detecting a modulation degree of the frequency signals for each frequency band of the frequency signal received through the first signal receiving module;
A frequency shift / shift detector for detecting a frequency shift amount and a shift amount of the demodulated frequency band frequency signals;
Azimuth display unit for calculating and displaying the azimuth at the measurement position using the received GPS signal: And
The detected modulation rate, frequency shift amount, and frequency shift amount for each frequency band are compared with reference modulation degree, reference frequency shift amount, reference frequency shift amount, and azimuth angle of preset normal transmission determination reference information, and the result of the comparison is analyzed. Further comprising a comparison unit for transmitting to the monitor control unit,
Error verification and operation analysis device for navigation safety facilities.
The method of claim 4, wherein
The result analysis unit
The difference between the modulation degree, frequency shift amount, frequency shift amount, azimuth angle and reference transmission standard reference information detected by the comparison analyzer, reference frequency shift amount, and reference frequency shift amount are numerically quantified.
Verifying the modulation degree, frequency shift and variation degree, azimuth angle, and amplitude change of the frequency signal for each band according to the analyzed difference,
As a result of verification, information on whether the frequency signal of each band is normally transmitted and the cause of abnormal transmission are derived and judged.
Error verification and operation analysis device for navigation safety facilities.
Placing at least one signal receiving module and the signal inspecting device at a predetermined inspection position using at least one fixing member;
Receiving a frequency signal transmitted from a preset navigation safety facility using the at least one signal receiving module;
Using wired and wireless connections in transmitting the signals received by the at least one signal receiving module to the comparison analyzer;
Verifying, by the at least one signal inspection device, the frequency signal transmitted from the navigation safety facility according to whether the frequency signal is normally transmitted and the normal transmission determination reference information of the frequency signal set to determine the cause of abnormal transmission; And
Transmitting information on whether or not the frequency signal is normally transmitted and the cause of abnormal transmission according to the verification result;
Verifying the frequency signal transmitted from the navigation safety facility,
Comparing and analyzing the waveform, amplitude, frequency, frequency modulation degree, frequency shift amount and variation amount, and azimuth angle with respect to the frequency signal by using the normal transmission determination reference information in a comparison analyzer; And
And displaying, by a monitoring unit, a waveform, amplitude, frequency, frequency modulation degree, frequency shift amount and variation amount, and azimuth of a frequency signal compared and analyzed according to the normal transmission determination reference information of the frequency signal on a screen.
Error verification and operational analysis of navigation safety facilities.
The method of claim 6,
Verifying the frequency signal transmitted from the navigation safety facility
Receiving and digitally converting a frequency signal from the navigation safety facility through a first antenna;
Receiving and digitally converting a GPS signal through a second antenna;
The method may further include storing the preset normal transmission criterion information of the frequency signal in a database, and sharing information necessary for error verification and operational analysis, such as past measurement and analysis data stored in the database.
Error verification and operational analysis of navigation safety facilities.
The method of claim 7, wherein
Verifying the frequency signal transmitted from the navigation safety facility
Controlling the frequency signal, GPS signal information, frequency signal in a state verified according to the normal transmission criterion information of the frequency signal, whether or not the frequency signal is normally transmitted, and information about an abnormal transmission cause to be displayed on the monitoring unit; ;
And transmitting information on whether the frequency signal is normally transmitted and the cause of abnormal transmission to an operator and storing the normal transmission judgment reference information and past measurement data of the frequency signal in the database.
Error verification and operational analysis of navigation safety facilities.
The method of claim 7, wherein
Comparing and analyzing the waveform, amplitude, frequency, frequency modulation degree, frequency shift and shift amount, azimuth for the frequency signal
Dividing the frequency signal by frequency band and demodulating the amplitude of the frequency signal for each band;
Detecting a modulation degree of frequency signals for each demodulated frequency band;
Detecting a frequency shift amount and a shift amount of the frequency signals for each demodulated frequency band; And
Comparing and detecting the azimuth extracted by processing and calculating a GPS signal and the azimuth extracted from the received frequency signal; And
The modulation rate, frequency shift amount, frequency shift amount, and azimuth angle of the detected frequency bands are compared with reference modulation degree, reference frequency shift amount, reference frequency shift amount, and GPS azimuth angle of preset normal transmission determination reference information, and the result of the comparison is analyzed. And transmitting to the unit and the monitor control unit.
Error verification and operational analysis of navigation safety facilities.
The method of claim 9,
The step of transmitting the information on whether the frequency signal is transmitted normally and the cause of abnormal transmission
Analyzing and quantifying the difference between the reference modulation degree, reference frequency shift amount, reference frequency shift amount, and azimuth angle according to the detected modulation rate, frequency shift amount, frequency shift amount, and normal transmission determination reference information for each frequency band;
An operation analysis step of numerically quantifying an operation analysis result by comparing and analyzing the detected modulation rate, frequency shift amount, frequency shift amount, and past analysis stored information for each frequency band;
Verifying a modulation degree, a frequency shift and variation degree, an azimuth angle, and an amplitude change of frequency signals of different bands according to the analyzed difference; And
Deriving and determining information on whether or not the normal frequency transmission of the frequency signal for each band, and the cause of the abnormal transmission as a result of the verification, the past measurement and operation analysis,
Error verification and operational analysis of navigation safety facilities.

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