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MHT4049-2018 English PDF

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MHT4049-2018: Technical requirement for voice and surveillance data recorder
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MH/T 4049-2018English299 Add to Cart 3 days [Need to translate] Technical requirement for voice and surveillance data recorder Valid MH/T 4049-2018

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Standard similar to MHT4049-2018

GB/T 23420   MH/T 4057   MH/T 4056   MH/T 4042   

Basic data

Standard ID MH/T 4049-2018 (MH/T4049-2018)
Description (Translated English) Technical requirement for voice and surveillance data recorder
Sector / Industry Civil Aviation Industry Standard (Recommended)
Classification of Chinese Standard V54
Word Count Estimation 12,194
Date of Issue 1/18/2018
Date of Implementation 4/1/2018
Issuing agency(ies) Civil Aviation Administration of China

MHT4049-2018: Technical requirement for voice and surveillance data recorder

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Technical requirement for voice and surveillance data recorder ICS 49.090 V 54 MH Civil Aviation Industry Standard of the People's Republic of China Technical requirements for voice and surveillance data recorders 2018-01-18 release 2018-04-01 Implementation Issued by Civil Aviation Administration of China

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the Air Traffic Control Industry Management Office of the Civil Aviation Administration of China. This standard is under the jurisdiction of the China Academy of Civil Aviation Science and Technology. Drafting organization of this standard. The Second Research Institute of Civil Aviation Administration of China. The main drafters of this standard. Yang Xiaojia, Guo Jing, Li Li, Guo Ning, Gao Jing, Zhou Bin, Zhang De. This standard is interpreted by the Second Research Institute of Civil Aviation Administration of China. Technical requirements for voice and surveillance data recorders

1 Scope

This standard specifies the technical requirements for voice and surveillance data recorders (hereinafter referred to as recorders). This standard applies to the planning, design, manufacturing, testing, construction and use of recorders.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. 3 Terms, definitions and abbreviations 3.1 Terms and definitions The following terms and definitions apply to this document. 3.1.1 Recorder Multi-channel synchronous recording and playback of voice data and monitoring data within a specified time is a special equipment. 3.1.2 MH Synchronous recording Use a unified time source to record voice data and monitor data. 3.1.3 Playback Play the recorded voice data and monitoring data. 3.1.4 Synchronous playback Synchronously play the voice data and monitoring data recorded by multiple channels. 3.1.5 Local playback Play back on the recorder. 3.1.6 Remote playback Remotely control the recorder playback through the private network. 3.2 Abbreviations The following abbreviations apply to this document.

4 Technical requirements

4.1 Composition of recorder The recorder consists of a collection unit (voice data, monitoring data), a data recording and storage unit, a playback unit and a management and maintenance unit group to make. 4.2 General requirements 4.2.1 The recorder should truly and completely record the original data, and the monitoring data and voice data should be synchronously replayed continuously, completely and stably during playback. according to. 4.2.2 The recorder should support at least two redundant power supplies. 4.2.3 The recorder shall meet the requirements of MH/T 4020 for surge protection of power supply and distribution systems. 4.2.4 The MTBF of the recorder should be greater than 4 500 h, the MTTR should be less than 0.5 h, and the design life of the recorder should be greater than 15 years. 4.2.5 The recorder should work normally under the following conditions. 4.2.6 Clock synchronization shall meet the following requirements. --Realize the time unity of the whole system --Has the function of accessing an external synchronous clock source; --The way to access the external source clock supports at least. RS232 interface, compliant with TIA/EIA-232-F related EIA-232 interface regulations, RJ45 interface conforming to IEC 60603-7-5 related to RJ45 interface regulations; --Real-time calibration, with fault tolerance to external clock sources; --The external synchronization clock source is lost, and the recorder is switched to the internal clock. The 48-hour accuracy error is less than 0.5 s. 4.2.7 The data storage time should not be less than 30 days. 4.2.8 The recorder shuts down abnormally, and the restart time should be less than 4 minutes. 4.2.9 The recorder shall have the ability to prevent tampering and deletion of recorded data. 4.2.10 The recorder should be modular in design, easy to expand, and use shelf products. 4.3 Voice data acquisition unit 4.3.1 The voice signal type shall at least have the ability to support analog audio, digital relay, digital telephone, and VoIP voice. 4.3.2 There should be independent voice recording channels and voice playback channels. 4.3.3 Analog audio performance indicators should meet the following requirements. 4.3.4 Digital trunk audio performance indicators should meet the following requirements. --Voice sampling supports China No. 1 signaling, ITU-T SS7, ITU-T Q.931; --The signal-to-noise ratio is greater than or equal to 38 dB. Note. China No. 1 Signalling is the general term for the channel associated signalling used in my country in the automatic telephone switching network. It conforms to the R2 subset specification of the signaling system and is a two-way The signaling system can be transmitted via 2-wire and 4-wire. 4.3.5 VoIP voice should meet the following requirements. --The protocol supports IETF RFC3261 (SIP), ITU-T H.323, IETF RFC3261 (RTSP); --Comply with EUROCAE ED-137 protocol standards related to telephone, Internet telephone and records. --The voice stream format supports the relevant regulations of the IETF RFC3261 (RTSP) format part. 4.4 Monitoring data acquisition unit 4.4.1 The supported surveillance data transmission protocol shall at least include UDP and HDLC. 4.4.2 It should be capable of collecting and processing primary/secondary radar data, surface surveillance radar data, multi-point positioning data, ADS-B data, and integrated navigation data. Trace data and other functions. 4.5 Data recording and storage unit 4.5.1 It shall have recording and storage functions of voice data and monitoring data. 4.5.2 The recorded data shall be encrypted and protected. 4.5.3 Recording and storage shall have dual-computer redundant configuration, parallel and independent recording. 4.5.4 The storage medium shall be supported for non-stop replacement. 4.5.5 The single-channel recording start mode should support sound control, voltage control, signaling control, and protocol control. 4.5.6 It shall have the function of dumping the recorded voice data to an external storage device, and the dumping format shall at least conform to the WAV audio format. Note. WAV is a sound file format that conforms to the RIFF (Resource Interchange File Format) file specification and is used to save Windows platforms Audio information resources. 4.5.7 It shall have the function of dumping the recorded monitoring data to an external storage device. The dump format is shown in Table 1. 4.6 Playback unit 4.6.1 Records should have monitoring data processing and display, voice decoding and playback functions. 4.6.2 The playback shall include voice playback, monitoring data playback, recorder synchronization playback, remote synchronization playback and RCI synchronization playback functions. 4.6.3 The voice data shall have the output function of speaker equipment (speakers, earphones, etc.). 4.6.4 When replaying monitoring data, it shall have the display function of monitoring data, including at least. --Selection and display of background map; --Radar sign information, in line with MH/T 4012 regulations; --Ranging (including map ranging, target-to-map ranging and target-to-target ranging); --Target filtering (filtering targets based on information such as flight altitude and area range). 4.6.5 When monitoring data is played back, it should be able to find the target according to the designated secondary code, call sign or address code. 4.6.6 The playback process shall have the functions of pause, play (multiply/decrease), fast forward, rewind, and drag. 4.6.7 The quality of data playback shall meet the following requirements. --Monitoring data error rate is less than 10-7; -Voice quality distortion is less than 2%. 4.6.8 It should be possible to allow the air traffic control automation system to replay voice and surveillance data remotely under safe conditions. 4.7 Management and Maintenance Unit 4.7.1 The function parameters shall meet the following requirements. --Record channel parameters including at least channel number and channel name; --Geographical information parameters include at least background map, route, waypoint and control sector; --The remaining space threshold of the storage medium; --Warning methods include at least sound, color, and dialog box. 4.7.2 The analog voice parameters shall at least meet the following requirements. --Pre-recording duration. 1 s～8 s; --Compression ratio. G729, GSM-AMR, ADPCM, PCM; --Volume. -50 dB～＋14 dB; --Single channel voice activation threshold. -35 dBm～＋5 dBm; --Single channel voltage control start threshold. 16 V～40 V. 4.7.3 Monitoring data equipment parameters should include at least name and type, and radar equipment parameters should also include latitude and longitude. 4.7.4 Monitoring data communication protocol parameters should meet the following requirements. --HDLC, set the serial port number and communication baud rate; --UDP multicast, at least the multicast IP address and port of the recorded data can be set; --UDP broadcast, at least the port for recording data can be set. 4.7.5 The monitoring management shall support. --Prompts and alarms of the working status of each unit module; --Two working modes of local monitoring and remote monitoring; --Monitoring data recording status prompt of each channel; --Recording status prompt of each channel of voice data; --Prompt the playback status of each channel of monitoring data; --Prompt the playback status of each channel of voice data; --Monitoring the utilization rate of the computer's central processing unit; --Monitoring of computer memory usage; --Monitor the on-off of the data interface; --Statistics of storage space occupied by data; -Monitoring data interruption alarm; --Voice data has no data alarm for a long time; --Long-term recording alarm of voice data; --Alarm for insufficient remaining space of storage medium; --Calibration clock loss alarm; -Recorder abnormal restart alarm; --Storage media failure alarm; - Abnormal power supply alarm. 4.7.6 The content of the log record shall include at least. --operator; --Start and end time of operation; --Operation content; --Record the start and end time of each channel of the recorder; --The abnormal exit time and reason of the recorder; - Various alarms specified in 4.7.5; --Start time of the recorder; -Recorder exit time. 4.7.7 User authority management shall meet the following requirements. --Support voice data query and monitoring data query; --Support the query function of the recorded data in the form of date (yyyymmdd), time (hhmmss), channel number and channel name can; --Support system administrators to view users, add users, delete users and edit user attributes; --The system administrator has the user authority to grant; --The system administrator has the authority to backup and restore recorded data; --The system administrator has the authority to clear alarms; --The system administrator has log query authority; --The system administrator has the authority to view, modify, backup and restore parameters. 4.8 Test method The main functions and performance test methods of the recorder are shown in Appendix A. AA

Appendix A

(Normative appendix) testing method A.1 Clock synchronization function Respectively connect to the reference clock source, adjust and record the system time several times and record the time required for calibration. The test results should meet the requirements of 4.2.6 begging. A.2 Voice collection function and performance Use the electroacoustic tester to input the specified test voice data, and view the sampling rate, signal-to-noise ratio, input level, and output displayed on the tester. Incoming impedance, channel crosstalk and frequency bandwidth data, the test results should meet the requirements of 4.3.3. A.3 Voice data recording and storage function A.3.1 Use a voice signal generator to simulate a channel of analog voice data that meets the requirements of 4.3.3, and check whether the recorder can achieve analog voice data According to the records and storage, the test results should meet the requirements of 4.5. A.3.2 Use digital telephone to transmit codec and signaling tester to simulate a digital voice data that meets the requirements of 4.3.4 and 4.3.5. Check whether the recorder can record and store digital voice data. The test result should meet the requirements of 4.5. A.4 Voice data playback function and quality Use the electroacoustic tester to input the quality-controlled test voice data (sampling rate, signal-to-noise ratio, input level, input impedance, channel string Interference and frequency bandwidth data), through monitoring to determine whether the playback content of the voice data is consistent with the input analog voice data, and check the electroacoustic measurement The voice quality tested by the tester should meet the requirements of 4.6.1, 4.6.2, 4.6.3, 4.6.6 and 4.6.7. A.5 Monitoring data collection function Simulate the monitoring data through the monitoring data simulator and input the monitoring data to the recorder in the manner specified in 4.4.1, and the test results shall conform to The provisions of 4.4.2. A.6 Monitoring data recording and storage function Use the monitoring data simulator to simulate the monitoring data and input it into the recorder to view the recording and storage of the monitoring data in the recorder, The test results should meet the requirements of 4.5. A.7 Monitoring data playback function and quality Use the monitoring data simulator to simulate the monitoring data and check the display of the monitoring data. The test results should meet 4.6.1, 4.6.2, 4.6.4 and 4.6.6.Use a data analyzer to test the quality of the replayed surveillance data, and the test results should meet the requirements of 4.6.7. A.8 Voice parameter values Use electroacoustic tester, multimeter and other dialogue parameters for testing, and the test results should meet the requirements of 4.7.2. A.9 Monitoring and management test Actual or simulated various working conditions and faults are tested, and the test results should meet the requirements of 4.7.5. A.10 Working environment test Use the high and low temperature control box to test the temperature range when the recorder can work normally, and use the empty box barometer to test the working environment of the recorder. Air pressure, use a humidity control test box to test the humidity range where the recorder can work normally, use a multimeter to test the working power supply voltage of the recorder, The test results should meet the requirements of 4.2.5.

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