JP4342431B2 - Aircraft noise data analysis processing method - Google Patents

Description

  The present invention relates to an aircraft noise data analysis processing method. More specifically, the present invention relates to a method for automatically measuring aircraft noise and eliminating noise other than aircraft noise called fog noise. The present invention relates to an aircraft noise data analysis processing method improved to a width.

  Conventionally, manned measurement and automatic measurement have been used as the measurement for analyzing and processing the noise data of this type of aircraft.

  In other words, in the manned measurement, the measurer installs a sound level meter at the measurement point, records the output in the level recorder, and usually stays resident for one week from 6 o'clock to 23 o'clock. Check if the noise generated by the aircraft is one of the aircraft, and if the measurer considers it as aircraft noise, enter a circle if it is not, and if not, enter a circle to indicate that the data processing will not be confused later. I was writing.

Then, the maximum occurrence time and the maximum noise level of the data that the measurer later determined to be aircraft noise are read and aggregated, and the weighted equivalent average noise level is commonly referred to as an annoyance index. ) Or an energy evaluation value such as equivalent sound level (LAeq; Equivalent Sound Level), etc., and WECPNL for each day is, as is well known, calculated as a power average of all maximum noise levels (dB). It is obtained by subtracting 27 by adding the logarithm of the number of occurrences of noise with weighted generation time zone,
In addition, energy evaluation values such as equivalent sound level (LAeq; Equivalent Sound Level) are widely used internationally, and are values obtained by converting noise that varies with time (unsteady sound) to a continuous constant noise level. In general, noise measurement for airplanes taking off and landing at private airports measures for seven consecutive days and evaluates the average value.

  However, in the case of manned measurement, even in the short-term measurement, an excessive burden is imposed on the measurer and the labor cost is enormous, and in recent years, automatic measurement has been performed.

  Next, the automatic measurement of aircraft noise is to automatically measure aircraft noise by installing a computer-controlled automatic measuring device at the measurement station at the measurement point in place of the measurer. When the computer reads and constantly monitors the value, and the noise value continuously exceeds the preset threshold for a preset time or more, the generated noise is considered to be caused by the aircraft, and the maximum time and level However, the threshold and duration are usually set to record all noise generated by the aircraft to be evaluated, so depending on the situation at the measurement point, the sound of a car or cold As a result, a large number of noises other than the aircraft are recorded, and the number of data may exceed 1000 even though the aircraft has only 180 takeoffs and landings.

  The data of the automatic measuring instruments is collected at the central station through a telephone line or the like, and data processing is performed. In the extraction method based on the time difference between the measuring stations, a plurality of measuring stations are arranged along the flight path. If this is the case, if the airplane passes over the sky, it should be observed at multiple points with some expected time difference if it flies in a fixed flight form such as takeoff or landing. However, by computer processing, only data that appears at a plurality of measurement stations is extracted as aircraft noise along the time difference between take-off and landing aircraft between the plurality of measurement stations.

  Next, in the extraction method by collation with the flight performance table (flight log), the flight performance table is provided from the airport side at a later date and collated with the aircraft take-off and landing time, and the advantage is recorded for take-off and landing. Therefore, if you know the time when you took off and landed at the airport, you can assume the flight time up to the measured value in advance, and you can extract the data in that range as the data of the takeoff. The time from the point to the measurement point is calculated backward, and the data in the vicinity of the time is extracted as the data of the lander.

  In addition, when there are multiple measuring stations, combining the extraction method based on the above-mentioned operation results table and the extraction method based on the time difference between measurement stations not only improves the accuracy but also improves the operation results table. It is also possible to respond to unrecorded go-around (landing re-doing) and operation modes such as the Ministry of Land, Infrastructure, Transport and Tourism and military aircraft for the purpose of radar adjustment.

For this purpose, for example, a determination sub-section and a determination period in which a plurality of sub-sections are combined are determined based on the temporal transition of the noise level, and the noise extraction value in the sub-section is disclosed. If a noise extraction value that does not require final determination is specified based on the frequency characteristics of the noise at the moment when the noise occurs, and there is at least one noise extraction value that should be finally determined within the determination period Based on the duration of the noise extraction value, whether the aircraft noise is determined (see Patent Document 1), or the flight plan information processing device 4 is linked to the central monitoring station 5, the aircraft 7 The identification information is recognized by the receiving station 2 and transmitted to the central monitoring station 5, and detailed information (airline company name, flight number, aircraft model, etc.) corresponding to the identification information from the flight plan information processing device 4 with this identification information as an intermediary Remove the noise measurement Corresponding to the noise level measured at the station 3, it is automatically stored in the storage device of the central monitoring station 5, and the data from the noise measuring station 3 is selected based on the position of the aircraft 7 or the noise measurement time Thus, the use of the noise level transmitted from the plurality of noise measurement stations 3 is allowed and the noise measurement range is expanded (see Patent Document 2), or the detection band level maximum value data is used as the detection band level maximum. By using relative detection band level average value data, which is the average value of the value data, there is much less variance, so the aircraft model identification process can be executed with higher accuracy, and the specification of the frequency band to be used has been changed By making it possible to improve the model identification accuracy, the reference band level data for each model can be accumulated or corrected by learning operation. By the the like, which can increase the model identification accuracy (see Patent Document 3) it has been disclosed.
JP 2001-091352 A JP 2002-365126 A Japanese Patent Laid-Open No. 9-89646

  However, in the extraction method based on comparison with the flight performance table, takeoff takes place at intervals of a little less than one and a half minutes and landing takes place at intervals of about two minutes, especially during rush hours of takeoff and landing. The measurement stations that are far from will cause confusion in the matching of noise measurement data, and furthermore, the provided flight performance table is entered by humans each time, and there is always a huge amount of data in a day. The fact is that mistakes are included to the extent that it can be said that this is a troublesome reconciliation.

  Furthermore, in the extraction method based on the time difference between the measurement stations described above, if the distance between the measurement points or the distance from the airport to the measurement point becomes longer, the time difference range (time window) needs to be expanded accordingly. Multiple data may appear in the time window, the extraction accuracy will be reduced, the measurement station may not be located in a positional relationship where the time difference can be matched, and the operation result table may not be available. The identification device is effective at the said location, and the threshold value and the duration setting must be satisfied, and the data must be recorded together with the determination result by the identification device.

  Furthermore, it is difficult to handle when aircraft noise and fog noise (noise other than aircraft noise) occur at the same time, and it can be judged if the measurement staff is stationed and confirmed by visual and auditory sense, but it is difficult with automatic measurement. is there.

  And if the amount of fogging sound is not so large, or it appears in a certain pattern such as sirens and chimes for disaster prevention radio, a skilled operator will have a database of aircraft noise levels originally generated in their heads. Therefore, if you deviate from that range, you may be able to delete such data at your discretion.

  Furthermore, in the method using an actual sound monitor as a countermeasure for fogging noise, when the aircraft flies far away and the generated noise is not so outstanding with respect to the surrounding noise, or when there are many cases that generate a large amount of noise in the surroundings, The actual sound of noise exceeding the threshold is automatically recorded on a hard disk or tape, and it is judged by a dedicated operator who listens to each sound to determine if there is no fogging sound. This is a reliable method for data processing. However, since the amount of work is enormous, it is a fact that it is not carried out very much except in special places. In this case, it is necessary to have several operators dedicated to listening to the actual sound, and it is enormous. Communication fees for receiving various data (acoustic data files) from fixed stations are enormous.

  As an alternative to the above-described method based on the judgment of the expert or the method using the actual sound monitor, there is a judgment based on the noise level waveform, and the noise level at every one second or every 0.1 second at the measuring station is recorded on the disk. In other words, it can be said that it is a digital version of the level recorder, and the actual sound data requires sampling of at least 11 kHz and 16 bits (22 kbytes per second) in order to judge listening, in the case of noise level recording, Since only about 4 bytes per second is required, there is an advantage that a short transfer time is required.

  In this case, the noise level is displayed on the screen like a level recorder at the central station, and the operator compares the waveform shape, especially the waveform shape of the previous and subsequent data, the data waveform shape of the adjacent measurement station, etc. However, the visual check of the noise level waveform for all the data is a considerable work load even if it is not as much as listening to the actual sound. About 30 aircraft aircraft noise is measured at 7 measuring stations, 30 minutes for a skilled person to perform one day of analysis processing work, 2 for those with little computer or data analysis processing experience It takes time.

In view of the problems described above, a result of intensive study, the analysis method of processing aircraft noise data according to claim 1 of the present invention is the largest temporal change data noise, or WECPNL value or LAeq value of maximum value displayed on the display device of the constant such as a monitor or printer in order from aging data giving the best contribution to noise evaluation value of the contribution rate numeric or more sound level waveform multiplied computer noise evaluation value, the maximum value determine unnecessary noise data other than the aircraft in order from aging data giving the best contribution to the largest noise temporal change data or the noise evaluation value of the automatic processing program capable of processing equal and judgment of the operator and, and delete unnecessary the noise data, by repeating these until the following degree of contribution to preset noise evaluation value The process of aggregating noise evaluation values when the time-varying data of the noise signal captured by the computer exceeds a predetermined threshold value and the noise data at the time of passing the aircraft is the portion where the threshold value is continuously exceeded for a predetermined time or more. In this case, unnecessary noise data other than that for the aircraft is deleted .

Furthermore, the aircraft noise data analysis processing method according to claim 2 is the aircraft noise data analysis processing method according to claim 1, wherein the electric field strength and / or altitude change of the transponder response signal generated by the measured and recorded aircraft is obtained. the one in which at the same time displayed on the display equipment.

    Furthermore, the aircraft noise data analysis processing method according to claim 3 is the same as the aircraft noise data analysis processing method according to claim 1 or claim 2, wherein The change in electric field strength with time and / or the direction of arrival information is simultaneously displayed on the display device.

Furthermore, the aircraft noise data analysis processing method according to claim 4 is a method in which the time-dependent change in the stuttering signal captured by the computer and the time-dependent change in the electric field strength and / or altitude of the transponder response signal generated by the aircraft are displayed on the display device. Of the noise with the largest noise level, or the time-varying data that gives the greatest contribution to the noise evaluation value of the noise level waveform greater than or equal to the value obtained by multiplying the noise evaluation value, which is the WECPNL value or LAeq value, by a certain contribution rate Thus , the time-dependent change of the noise signal captured by the computer and the time-dependent change of the electric field strength and / or altitude of the transponder response signal generated by the aircraft will most contribute to the noise change value or the noise evaluation value of the largest noise. the aircraft by an automatic processor equivalent processing that is programmable and the discretion of the operator in order from aging data Determine outer unnecessary noise data, and delete unnecessary the noise data, and repeating these until the following degree of contribution to preset noise evaluation value.

Furthermore, the method for analyzing and analyzing the noise data of an aircraft according to claim 5 is the following: The information contributes most to the noise evaluation value of the noise level waveform that is equal to or greater than the value obtained by multiplying the noise evaluation value, which is the WECPNL value or the LAeq value, by a certain contribution rate , over time on the display device. and displayed in order from the temporal change data, the largest noise maximum value the time course and / or direction of arrival information of the field strength of the radio wave changes over time and aircraft ground distance measuring apparatus of the captured noise signal to the computer to be used Of the program that can be processed in the same order as the operator's judgment in order from the time-dependent change data or the time-change data that contributes most to the noise evaluation value Determine unnecessary noise data other than the aircraft by management, and delete unnecessary the noise data, and repeating these until the following degree of contribution to preset noise evaluation value.

Further, the aircraft noise data analysis processing method according to claim 6 is a method in which the temporal change in the noise signal captured in the computer, the electric field intensity and / or altitude change in the transponder response signal generated by the aircraft, A certain contribution to the time-varying data of electric field strength and / or direction-of-arrival information of the radio wave used by the distance measuring device to the display device, and the noise evaluation value that is the maximum value of the stuttering or the WEPPNL value or LAeq value The time-varying data that makes the greatest contribution to the noise evaluation value of the noise level waveform that is greater than the value multiplied by the rate is displayed in order, the time-varying change in the stuttering signal captured by the computer and the electric field strength of the transponder response signal emitted by the aircraft / Or altitude change with time and time-dependent change in electric field strength and / or direction-of-arrival information used by aircraft distance measurement equipment The largest noise change with time data or unwanted noise data other than the aircraft by an automatic processor of the most possible contribution is equivalent to processing and the discretion of the operator in order from aging data providing a program to a noise evaluation value of the maximum value The unnecessary noise data is deleted, and these are repeated until the degree of contribution to the preset noise evaluation value is less than or equal to.

  The aircraft noise data analysis processing method of the present invention sorts the noise data of an arbitrary measurement station on an arbitrary day in order from the largest noise level waveform according to the above-described configuration, and displays the largest noise level waveform on the display device. In addition to being reproduced by a sound reproduction device, the operator visually observes only a noise level waveform that is equal to or higher than a numerical value obtained by multiplying a noise evaluation value such as a WECPNL value or LAeq by a certain contribution rate, and other than aircraft noise. This is an epoch-making invention that can reduce the time required for conventional analysis processing at once.

  The present invention relates to an aircraft noise data analysis processing method. More specifically, the present invention relates to a method for automatically measuring aircraft noise and eliminating noise other than aircraft noise called fog noise. The aircraft noise data analysis processing method according to claim 1, wherein the aircraft noise data analysis processing method according to claim 1 exceeds a predetermined threshold value due to a temporal change in a stuttering signal captured in a computer, and the threshold value is increased. When the data that exceeds the predetermined time continuously is used as the noise data when passing through the aircraft, the purpose is to delete unnecessary noise data other than aircraft in the process of calculating the noise evaluation value, and the maximum value is the largest Displayed on the display device of a computer such as a monitor or printer in order from the time-dependent data of noise or the time-dependent data that contributes most to the noise evaluation value. Or delete the unnecessary data by automatic processing of the program that can perform the same processing as the operator's judgment in order from the temporal change data of the noise with the largest maximum value or the temporal change data that contributes most to the noise evaluation value This is repeated until the degree of contribution to the preset noise evaluation value is less than or equal to.

  Furthermore, the aircraft noise data analysis processing method according to claim 2 is the aircraft noise data analysis processing method according to claim 1, wherein the electric field strength and / or altitude change of the transponder response signal generated by the measured and recorded aircraft is obtained. Are simultaneously displayed on the display device or the printing device.

  Furthermore, the aircraft noise data analysis processing method according to claim 3 is the same as the aircraft noise data analysis processing method according to claim 1 or claim 2, wherein The change in electric field strength with time and / or the direction of arrival information is simultaneously displayed on the display device.

  Furthermore, the aircraft noise data analysis processing method according to claim 4 is a method in which the time-dependent change in the stuttering signal captured by the computer and the time-dependent change in the electric field strength and / or altitude of the transponder response signal generated by the aircraft are displayed on the display device. The time-dependent data of the loudest noise or the time-dependent data that contributes most to the noise evaluation value are displayed in order, and the operator's judgment, or the temporal change of the stuttering signal captured by the computer and the transponder response signal generated by the aircraft By automatic processing of the program that can perform processing equivalent to the operator's judgment in order from the temporal change data of the noise with the largest maximum value or the temporal change data that most contributes to the noise evaluation value. Delete unnecessary data until they are less than or equal to the degree of contribution to the preset noise evaluation value. Ri is performed returns.

  Further, the aircraft noise data analysis processing method according to claim 5 is a method for analyzing the time-dependent change of the stuttering signal captured in the computer, the time-dependent change of the electric field strength of the radio wave used by the aircraft ground distance measuring device, and / or the arrival direction information. Is displayed in order from the time-varying data of the noise with the largest maximum value or the time-varying data that most contributes to the noise evaluation value on the display device, and the time-dependent change of the stuttering signal captured by the operator or the computer and the aircraft The operator's judgment in order from the time-dependent change of the electric field strength and / or direction-of-arrival information of the radio wave used by the ground-to-ground distance measuring device from the time-dependent change data of the noise with the largest maximum value or the time-change data that most contributes to the noise evaluation value Unnecessary data is deleted by automatic processing of a program that can perform the same processing as Those repeating these until the.

  Furthermore, the aircraft noise data analysis processing method according to claim 6 is a method for analyzing a change over time in a stuttering signal captured in a computer, a change over time in an electric field strength and / or altitude of a transponder response signal generated by an aircraft, and a ground distance of the aircraft. The time-dependent change and / or direction-of-arrival information of the electric field strength of the radio wave used by the measuring device is displayed in order from the time-varying data of the largest stuttering or the time-varying data that most contributes to the noise evaluation value. The time-dependent change of the noise signal captured by the operator or the computer, the electric field strength and / or altitude change of the transponder response signal generated by the aircraft, and the electric field strength of the radio wave used by the aircraft's ground distance measuring device. Time-varying and / or direction-of-arrival information is displayed on the display device, and the largest contribution to the time-varying data or noise evaluation value of the largest stuttering The unnecessary data is deleted by automatic processing of a program that can be processed in the same order as the operator's judgment in order from the time-varying data, and these are repeated until the degree of contribution to the preset noise evaluation value falls below It is.

  Furthermore, the aircraft noise data analysis processing method according to claim 7 exceeds a predetermined threshold value due to the time-dependent change of the noise signal captured in the computer, and a portion where the threshold value is continuously exceeded for a predetermined time or longer is passed through the aircraft. In the process of aggregating noise evaluation values, it is intended to delete unnecessary noise signal data other than aircraft in the process of aggregating noise evaluation values. The time-dependent data that gives the greatest contribution to the value is presented by the computer display device and the sound reproduction device in order, and the greatest contribution is made to the time-dependent data or noise evaluation value of the stuttering signal with the largest maximum value. The unnecessary data is deleted in advance by automatic processing of the program that can perform processing equivalent to the operator's judgment in order from the given time-dependent data. Those repeating these until the following degree of contribution to the noise evaluation value.

  Further, the aircraft noise data analysis processing method according to claim 8 is the aircraft noise data analysis processing method according to claim 7, in which the electric field strength and / or altitude of the transponder response signal generated by the aircraft simultaneously measured and recorded is measured. Changes are displayed simultaneously.

  Further, the aircraft noise data analysis processing method according to claim 9 is the aircraft noise data analysis processing method according to claim 7 or claim 8, wherein the radio noise data used by the aircraft ground distance measurement device recorded and recorded is used. The change over time in the electric field strength and / or the direction-of-arrival information is displayed simultaneously.

  Furthermore, the aircraft noise data analysis processing method according to claim 10 has the largest maximum value of the electric field strength and / or altitude change with time of the transponder response signal generated by the aircraft measured and recorded simultaneously with the noise signal captured in the computer. Measurement data is recorded at the same time as the operator's judgment or the noise signal taken in by the computer by presenting it in sequence from the time-varying data of the stuttering signal or the time-varying data that most contributes to the noise evaluation value. Equivalent to the operator's judgment in order from the time-varying data of the stuttering signal with the largest maximum value or the time-varying data that most contributes to the noise evaluation value. Delete unnecessary data by automatic processing of programs that can perform Until the following degree of contribution to fit the set noise evaluation value is performed repeatedly these.

  Further, the aircraft noise data analysis processing method according to claim 11 is a method of measuring the time-dependent change and / or direction of arrival of the electric field strength of the radio wave used by the aircraft ground distance measuring device measured and recorded at the same time as the roaring signal captured in the computer. The information is presented by the computer display device and the sound reproduction device in order from the time-varying data of the stuttering signal having the largest maximum value or the time-varying data that most contributes to the noise evaluation value, and is judged by the operator or taken into the computer. The time-dependent change in the electric field strength and / or direction-of-arrival information of the radio wave used by the aircraft ground distance measuring device measured and recorded at the same time as the roaring signal is the highest in the time-varying data or noise evaluation value of the maximum roaring signal. Unnecessary by automatic processing of programs that can perform the same processing as the operator's judgment in order from the time-varying data that gives the contribution And delete of over data, but repeating these until the following degree of Yadorikiutsushi to the preset noise evaluation value.

  Furthermore, the aircraft noise data analysis processing method according to claim 12 is a method of measuring a distance between an electric field intensity and / or altitude of a transponder response signal generated by an aircraft simultaneously measured and recorded simultaneously with a noise signal captured in a computer, and measuring a ground distance of the aircraft. The display device of the computer in order from the temporal change data of the stray signal having the largest maximum value or the temporal change data that makes the greatest contribution to the noise evaluation value of the temporal change and / or direction-of-arrival information of the electric field strength of the radio wave used by the device Changes in the field strength and / or altitude of the transponder response signal generated by the aircraft, which is measured and recorded simultaneously with the noise judgment signal presented by the sound reproduction device and entered by the computer, and used by the aircraft ground distance measurement device Stuttering with the largest maximum value of time-dependent changes in electric field strength and / or arrival direction information Unnecessary data is deleted by automatic processing of a program that can be processed in the same way as the operator's judgment in order from the time-dependent change data or the time-dependent change data that most contributes to the noise evaluation value, to the preset noise evaluation value These are repeated until the degree of contribution is less than or equal to.

  Furthermore, in the aircraft noise data analysis processing method according to claim 13, the noise evaluation value is a WECPNL value.

  Furthermore, in the aircraft noise data analysis processing method according to claim 14, the noise evaluation value is an energy value such as an LAeq value. Analysis processing method.

  That is, the aircraft noise data analysis processing method of the present invention automatically measures aircraft noise continuously for several days using a measuring instrument at a plurality of measurement stations, and the measured noise data is 0. .It is taken into the computer every 1 to 1 second.

  Next, the noise data captured by the computer is collected at the central office, and each noise data collected at the central office is displayed as a noise level waveform by a display device, that is, a monitor, a printer, etc. The largest contribution to the time-dependent data or noise evaluation value of the largest noise

Are displayed in order from the time-dependent change data.

  As for the maximum value, a predetermined threshold value is set in advance, and exceeds the predetermined threshold value due to the temporal change of the stuttering signal captured in the computer, and the passage of the aircraft over the portion continuously exceeding the threshold value for a predetermined time or more. It is used as the time stuttering data.

  Next, in order for the operator to visually observe the noise level waveform of the noise signal displayed on the display device of the computer, such as a monitor or printer, and to collect the noise evaluation values, unnecessary noise data other than the aircraft at the operator's discretion Are repeatedly performed until the degree of contribution to the preset noise evaluation value is less than or equal to.

  Further, the electric field intensity and / or altitude change with time of the transponder response signal generated by the measured and recorded aircraft is simultaneously displayed on the display device.

  Furthermore, the time-dependent change in the electric field strength of radio waves used by the ground distance measuring device emitted by the aircraft recorded and recorded and / or the arrival direction information are simultaneously displayed on the display device.

  Furthermore, the time-dependent change in the noise signal captured by the computer and the time-dependent change in the electric field strength and / or altitude of the transponder response signal generated by the aircraft are displayed on the display device as the highest time-varying noise data or noise evaluation value. The data is displayed in order from the time-varying data giving the contribution.

  Then, the temporal change data of the noise with the largest maximum value is displayed on the display device with the temporal change of the noise signal captured by the computer and the temporal change of the electric field intensity of the radio wave used by the ground distance measuring device emitted by the aircraft. Or it displays in order from the time-change data which most contributes to the noise evaluation value.

  Furthermore, the temporal change of the noise signal captured by the computer, the electric field strength and / or altitude of the transponder response signal emitted by the aircraft, the temporal change of the electric field strength of the radio wave used by the ground distance measuring device emitted by the aircraft, and The direction-of-arrival information is displayed in order from the time-varying data of the stuttering with the largest maximum value or the time-varying data that most contributes to the noise evaluation value on the display device.

  In addition, it is displayed on a display device such as a computer monitor or printer, and is reproduced as sound by a sound reproduction device, and unnecessary data is deleted at the operator's discretion, and the degree of contribution to the preset noise evaluation value is less than or equal to These are repeated until it becomes.

  Then, the electric field strength and / or altitude change over time of the transponder response signal generated by the aircraft recorded and recorded at the same time as the noise signal captured by the computer contributes most to the time-varying data or noise evaluation value of the maximum stuttering signal. The data is presented by the computer display device and the sound reproduction device in order from the given time-dependent data.

  Furthermore, the time-dependent change data of the noise signal with the largest maximum value of the time-dependent change and / or direction-of-arrival information of the radio wave used by the ground distance measuring device emitted by the aircraft measured and recorded at the same time as the noise signal captured in the computer Alternatively, it is presented by the computer display device and the sound reproduction device in order from the time-dependent change data that most contributes to the noise evaluation value.

  Furthermore, the time-dependent change in electric field strength and / or altitude of the transponder response signal emitted by the aircraft measured and recorded at the same time as the noise signal captured by the computer and the time-dependent change in electric field strength of the radio wave used by the ground distance measuring device emitted by the aircraft and / or Alternatively, the direction-of-arrival information is presented by the computer display device and the sound reproduction device in order from the temporal change data of the noise signal having the largest maximum value or the temporal change data that most contributes to the noise evaluation value.

  The aircraft noise data analysis processing method according to the present invention, as described above, deletes unnecessary data at the operator's discretion, and repeats these until the degree of contribution to the preset noise evaluation value falls below. By registering unnecessary data in the computer in advance by automatic processing of a program capable of processing equivalent to the operator's judgment, it can be automatically processed.

  Next, the noise level waveform of the computer noise data recorded at any measurement station on any day is sorted in order from the largest noise level waveform, and the largest noise level waveform is displayed on the display device and reproduced by the sound reproduction device. It is.

  The noise evaluation value of the aircraft stuttering data analysis processing method of the present invention is a WECPNL value, and the WECPNL value is set and multiplied by a constant contribution rate, and the noise level equal to or higher than the numerical value obtained by multiplying the WECPNL by a constant contribution rate. Only the waveform is visually checked by the operator, and noise other than aircraft noise is judged and deleted.

  Next, in Japan, the weighted equivalent average noise level is WEPPN (Weighted Equivalent Continuous Noise Level), but in other countries, energy evaluation values such as LAeq are used. The LAeq value is used.

  The present invention is an aircraft noise data analysis processing method. In order to improve the efficiency of analysis processing using noise level waveforms, the evaluation of energy evaluation values such as WECPNL or LAeq is performed by averaging the maximum noise level data for each aircraft. Therefore, data with a larger dB value has a greater contribution to WECPNL. For example, 80 dB1 data, 70 dB10 data, and 60 dB100 data are equivalent.

  In other words, when checking the data of the place where the data is measured at 80 dB and date, there is almost no influence when overlooking the data of 60 dB, and the measurement is performed to shorten the processing time. If the data can be sorted in descending order and the operator can check only data having a large contribution to the energy evaluation value such as WECPNL or LAeq, the processing load can be reduced without reducing the accuracy of the data.

Claims (6)

Aging data of the largest noise maximum value or the temporal change data that gives most contribute to the noise evaluation value is WECPNL value or LAeq values in the noise evaluation value of a certain contribution numerical or more sound level waveform obtained by multiplying sequentially displayed on the display device of a computer such as a monitor or printer, equivalent processes and the discretion of the operator in order from aging data giving the highest noise contributed most to the aging data and the noise evaluation value of the maximum value It can be determined whether it is unnecessary stuttering data other than the aircraft by automatic processing of the program , the unnecessary noise data is deleted, and these are repeated until the degree of contribution to the preset noise evaluation value falls below by performing, it exceeds the threshold value changes with time data of a predetermined captured noise signal to the computer, and the threshold for a predetermined time following When a portion exceeding continuously was noise data at the time the aircraft passes, aircraft noise data analysis processing method and deletes unnecessary noise data other than aircraft in the process of aggregating the noise evaluation value. Aircraft noise data analysis method according to claim 1, characterized in that the display field strength measurements recorded aircraft emit transponder response signal and / or a high degree of aging at the same time on the display equipment.   The aircraft noise according to claim 1 or 2, wherein the time-dependent change in electric field strength of radio waves used by the aircraft ground distance measurement device and / or the arrival direction information recorded on the display device are simultaneously displayed on the display device. Data analysis processing method. Time-varying data of noise, WECPNL value or LAeq value, which has the largest maximum value on the display device, shows the time-dependent change in the noise signal captured by the computer and the electric field strength and / or altitude change in the transponder response signal emitted by the aircraft. The aircraft emits the temporal change of the stuttering signal captured in the computer, displaying in order from the temporal change data that gives the greatest contribution to the noise evaluation value of the noise level waveform that is equal to or greater than the value obtained by multiplying the noise evaluation value by a certain contribution rate. Program capable of processing equivalent to the operator's judgment in order from the time-varying data of the largest noise or the time-varying data that most contributes to the noise evaluation value for the time-varying change in electric field strength and / or altitude of the transponder response signal of the automatic processing to determine unnecessary noise data other than the aircraft, unnecessary the noise data Perform removal, aircraft noise data analysis processing wherein the repeating these until the following degree of contribution to preset noise evaluation value. Time-varying data of noise with the largest maximum value or WECPNL on display device with time-varying change of noise signal taken into computer and electric field strength and / or direction-of-arrival information of radio wave used by aircraft ground distance measuring device and displayed in order from the temporal change data provides the most contributes to the noise evaluation value of a certain contribution numerical or more sound level waveform obtained by multiplying the noise evaluation value is a value or LAeq value, the noise signal taken to the computer Temporal change and time-dependent change of electric field strength of radio waves used by aircraft distance measurement device and / or direction of arrival information in order of time-varying data of noise having the largest maximum value or time-varying data that most contributes to noise evaluation value determine unnecessary noise data other than the aircraft by an automatic processor of available programs equivalent to processing and judgment of the operator, the non The function may remove noise data, aircraft noise data analysis processing wherein the repeating these until the following degree of contribution to preset noise evaluation value Do. Temporal change in noise signal captured by computer, electric field intensity and / or altitude change of transponder response signal emitted by aircraft, and temporal change and / or direction of arrival of radio field strength used by aircraft ground distance measuring device The information contributes most to the noise evaluation value of the noise level waveform greater than or equal to a value obtained by multiplying the noise evaluation value that is the WECPNL value or LAeq value by a certain contribution rate, with the time-varying data of the largest noise on the display device. The time-lapse change of the noise signal captured in the computer, the time-dependent change of the electric field strength and / or altitude of the transponder response signal emitted by the aircraft, and the radio wave used by the aircraft ground distance measuring device Change the field strength and / or direction-of-arrival information of the sound into the time-varying data or noise evaluation value of the largest noise Also determines whether unwanted noise data other than the aircraft by an automatic processor of the possible equivalent processing and the discretion of the operator in order from aging data giving a contribution program, and delete unnecessary the noise data, previously An aircraft noise data analysis processing method characterized by repeatedly performing these steps until the degree of contribution to the set noise evaluation value is less than or equal to.