MHT4043-2015 English PDF

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MHT4043-2015: Technical requirements for civil aviation X-band surface movement radar

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Basic data

Standard ID: MH/T 4043-2015 (MH/T4043-2015)
Description (Translated English): Technical requirements for civil aviation X-band surface movement radar
Sector / Industry: Civil Aviation Industry Standard (Recommended)
Classification of Chinese Standard: V54
Classification of International Standard: 33.200
Word Count Estimation: 9,959
Date of Issue: 2015-10-12
Date of Implementation: 2015-12-01
Quoted Standard: GB 8702; GB 10436; MH/T 4020
Regulation (derived from): ?Civil Aviation Industry Standard 2015 No.5; Industry Standard Filing Announcement 2016 No.1 (Total No.193)
Issuing agency(ies): Civil Aviation Administration of China
Summary: This standard specifies the technical requirements for X-band surveillance radar equipment for civil aviation. This standard is applicable to the design, development, inspection and use of X-band surveillance radar equipment for civil airports.

MHT4043-2015: Technical requirements for civil aviation X-band surface movement radar

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Technical requirements for civil aviation X-band surface movement radar ICS 33.200 V 54 MH Civil Aviation Industry Standard of the People's Republic of China Civil aviation X-band surface surveillance radar equipment skills requirement 2015-09-30 released 2015-12-01 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 was approved by the Aircraft Airworthiness Certification Department of the Civil Aviation Administration of China. This standard is under the jurisdiction of the China Academy of Civil Aviation Science and Technology. Drafting organizations of this standard. Air Traffic Control Industry Management Office of Civil Aviation Administration of China, Second Research Institute of Civil Aviation Administration of China. The main drafters of this standard. Guo Jing, Luo Xiao, Ye Jiaquan, Liu Jing, Wei Tong, Pan Jie, Yang Xiaojia, Cao Xiangdong. This standard is interpreted by the Second Research Institute of Civil Aviation Administration of China. Civil aviation X-band surface surveillance radar equipment technical requirements

1 Scope

This standard specifies the technical requirements for civil aviation X-band surface surveillance radar equipment. This standard applies to the design, development, inspection and use of X-band surface surveillance radar equipment for civil airports.

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. GB 8702 Electromagnetic environment control limit GB 10436 Hygienic standards for microwave radiation in workplaces MH/T 4020 Technical specification for lightning protection of civil aviation communication, navigation and monitoring facilities 3 Terms, definitions and abbreviations 3.1 Terms and definitions The following terms and definitions apply to this document. 3.1.1 Surface movement radar By radiating electromagnetic waves, and detecting and processing the reflected signals of radiated electromagnetic waves from ground objects, the target of interest within the signal coverage can be realized Radar equipment for the detection and monitoring of standard (aircraft, vehicles, obstacles, etc.). 3.1.2 Pulse radar A radar that obtains target information by transmitting pulse signals. 3.1.3 Continuous wave radar A radar that obtains target information by transmitting continuous wave signals. 3.1.4 Range resolution In the same azimuth, the ability of the radar to distinguish the smallest distance between adjacent objects. 3.1.5 Range accuracy Mean square error of radar range estimation. 3.1.6 Azimuth resolution At the same distance, the ability of the radar to distinguish the smallest azimuth angle of adjacent objects. 3.1.7 Azimuth accuracy The mean square error of the radar detection bearing estimation. 3.1.8 Pulse duration The time interval between the half amplitude point (Um) of the rising edge and the falling edge of the pulse envelope. 3.1.9 Pulse compression technology The technique of modulating the transmitted wide pulse signal and processing the echo to obtain narrow pulse. 3.1.10 Pulse rise time The time between the 0.1 times amplitude point and the 0.9 times amplitude point (Um) of the rising edge of the pulse envelope. 3.1.11 Pulse decay time The time between the 0.9 times amplitude point to the 0.1 times amplitude point (Um) of the falling edge of the pulse envelope. 3.1.12 Detection probability The probability of an actual target being detected in the radar output detection. 3.1.13 Probability of false alarm The possibility of falsely detecting anything other than the real target as a target in radar output detection. 3.2 Abbreviations The following abbreviations apply to this document. 4.1 Composition The surface surveillance radar equipment is composed of an antenna feeder system, a transmitting system, a receiving system, a signal processing system, and a monitoring system. 4.2 General requirements 4.2.1 The microwave radiation of radar indoor equipment should meet the requirements of GB 8702 and GB 10436. 4.2.2 The main equipment (including transmitting system, receiving system, signal processing system, etc.) composing the radar should adopt redundant configuration. The radio system and the receiving system can realize dual-channel redundancy; the automatic or manual switching of redundant configuration should output signals stably within 3 s. 4.2.3 The radar should adopt the following technical standards. --Pulse radar adopts technical standards such as frequency diversity and constant false alarm detection; --Continuous wave radar adopts all-solid-state, all-coherent, frequency diversity, frequency modulation, constant false alarm detection and other technical systems. 4.2.4 The radar signal processing system unit should support the clock for timing processing, and the timing accuracy should reach at least 100 μs; the time synchronization standard The standard should adopt the network time synchronization protocol. 4.2.5 The safety protection device shall meet the following requirements. --With a safety circuit, the antenna drive will be automatically turned off under abnormal working conditions; --With safety linkage device, turn off the antenna drive and stop radiation when the antenna needs to be shut down; --With a locking mechanism to prevent the antenna from rotating during maintenance. 4.2.6 The time from cold start to stable operation of the radar should not exceed 180 s; 4.2.7 The MTBF of the pulse radar transceiver system should be greater than 10 000 h, and the MTBF of the continuous wave radar transceiver system should be greater than 20 000 h. The MTTR of the internal equipment should be less than 0.5 h, and the MTTR of the outdoor equipment should be less than 2 h. 4.2.8 The power supply shall meet the following requirements. --Single-phase voltage is 220 V22 V, or three-phase voltage is 380 V38 V; --The frequency is 50 Hz2.5 Hz. 4.2.9 Radar antennas and system facilities should have a lightning protection system and meet the requirements of MH/T 4020. 4.2.10 The environmental conditions of the equipment shall meet the following requirements. --Indoor equipment operating environment. 4.3 Performance requirements 4.3.1 The working frequency band is X band, 9.0 GHz～9.5 GHz. 4.3.2 Under the condition that the rainfall is not more than 16 mm/h and the target equivalent radar cross-sectional area is 1 m2, the following detection requirements should be met. --Detection distance. not less than 4 300 m; --Azimuth. 0 °～360 °; --Position accuracy. The position accuracy of the detected target is better than 7.5 m (95% confidence level); --Azimuth error. the position error is not more than 0.15° at a distance of 1 000 m; --Detection probability. not less than 90% within the specified coverage distance; - False alarm probability. not more than 1×10-6. 4.3.3 The resolution should meet the following requirements. --Distance resolution is not more than 15 m; --Upper position resolution is not more than 0.57° at a distance of 1 000 m. 4.3.4 The detection accuracy of the target movement speed should reach 2 km/h, and it should be able to detect the movement speed in the range of 0 km/h～463 km/h. Moving target. 4.3.5 The target processing capacity should not be less than 250 targets. 4.4 Antenna system requirements 4.4.1 The antenna polarization mode is linear polarization or circular polarization. 4.4.2 The vertical antenna radiation should be able to provide the required airspace coverage, and the vertical lobe width (3 dB) should not be greater than 18°±2°. 4.4.3 The azimuth lobe width (3 dB) radiated in the horizontal direction of the antenna should not be greater than 0.45º, and the azimuth lobe and sidelobe level should not be greater than -27 dB (Within ±10°) or -30 dB (over ±10°). 4.4.4 The antenna backlobe level should not be greater than -40 dBc. 4.4.5 The antenna gain should not be less than 34 dBi. 4.4.6 The antenna elevation angle should be adjustable within the range of -0.5°～0°. 4.4.7 The beam scanning rate should not be less than 360°/s. 4.4.8 A two-position encoder shall be used, and the accuracy of each encoder shall be no less than 13 bits (8192 azimuth reference pulses per revolution). 4.4.9 The voltage standing wave ratio of the antenna and the rotating hinge should not be greater than 1.5. 4.4.10 Waveguide can be used for pressure drying. 4.4.11 The isolation between the transmitting system and the receiving system of continuous wave radar should not be less than 60 dB. 4.5 Launch system requirements 4.5.1 A launch system with fault softening capability should be adopted. 4.5.2 The output power fluctuation should meet the following requirements. --Pulse radar. not more than ±0.3 dB; --Continuous wave radar. not more than ±2.0 dB. 4.5.3 The pulse width of the pulse radar transmitting system should be within the range of 40 ns ± 4 ns, and the pulse repetition frequency should be 800 Hz to 8 000 Hz Adjustable within the range, the pulse repetition frequency swing is not more than 0.6%. 4.5.4 The pulse envelope should be clear, free of self-excitation, stable amplitude, free of jitter, and. --The rise time of the unmodulated pulse is not more than 30 ns; --The fall time of the unmodulated pulse is not more than 30 ns; --The pulse top drop is not more than 5%; --The fluctuation at the top of the pulse is not more than 3%. 4.5.5 The scan period variation of the continuous wave radar transmitting system should not exceed 100 μs. 4.5.6 The frequency sweep bandwidth of the continuous wave radar transmitting system should not be less than 100 MH z. 4.5.7 The frequency sweep time change of the continuous wave radar transmitting system should not exceed 10 μs, and the frequency sweep time change should not exceed 10 μs. 4.5.8 The output gain difference between the harmonics and the fundamental frequency should not be less than 60 dB. 4.5.9 The output gain difference between the parasitic radiation and the fundamental frequency should meet the following requirements. --Pulse radar. not less than 60 dB; --Continuous wave radar. not less than 45 dB. 4.5.10 The function of selecting, adjusting, and setting sector radiation power suppression shall be provided. At least 4 blanking sectors can be set at the same time, between multiple sectors The resolution should not be greater than 1°, and the resolution of the azimuth sector should not be greater than 10°. 4.5.11 It should have functions such as standing wave protection, overvoltage protection, over temperature protection, and stall protection. Pulse radar should also have over-duty cycle protection. can. 4.6 Receiving system requirements 4.6.1 The noise figure of the signal receiving link (not including the antenna feeder and the noise processing part of the receiving system) should not be greater than 6 dB. 4.6.2 The linear dynamic range should not be less than 70 dB. 4.6.3 The gain control range should not be less than 30 dB, and the whole process is controllable. 4.6.4 The intermediate frequency bandwidth of the pulse radar receiving system should not be less than 20 MH z; the intermediate frequency bandwidth of the continuous wave radar receiving system should not be less than 7 MH z. 4.6.5 The out-of-band interference suppression capability should not be less than 35 dB. 4.6.6 The image rejection should not be less than 18 dB. 4.6.7 Shall have STC or SFC function. 4.6.8 For non-fully coherent pulse radars, automatic frequency control functions should be provided. 4.6.9 For radars using pulse compression technology, the main and sidelobe ratio of pulse compression should not be less than 40 dB, and the equivalent pulse width after pulse compression should be Within the range of 40 ns±4 ns. 4.6.10 It shall have isolation protection and overload protection functions. 4.7 Signal processing system requirements 4.7.1 Radar head signal processing 4.7.1.1 It shall have digital or original video output, and the digital video shall adopt a standard format. 4.7.1.2 The time interval between the radar beam illuminating the target and the video signal output should not exceed 250 ms. 4.7.1.3 The original video should adopt the coaxial output interface, and the digital video should adopt the EIA-422 or EIA-644 output interface. 4.7.2 RDP signal processing 4.7.2.1 It shall have the ability to receive and process original video. 4.7.2.2 It shall have the function of selecting filter banks according to different clutter environments. 4.7.2.3 The rain clutter processing function shall be provided. 4.7.2.4 The clutter map processing function shall be provided, and the clutter map detection threshold shall be adjustable. 4.7.2.5 The constant false alarm processing shall be adopted, and the constant false alarm threshold shall be adjustable. 4.7.2.6 It should be able to provide the target position report output conforming to the standard format, and the report processing delay should not exceed 500 ms. 4.7.2.7 It shall have RJ45 or RS232 data output interface, and the port format and data transmission rate can be configured. 4.7.3 RDP component configuration RDP signal processing components can be selected as required. 4.8 Monitoring system requirements 4.8.1 It shall have local and remote monitoring and control functions with configurable priority, and the function of hierarchical management of user rights. 4.8.2 There should be three levels of equipment working status indication and working parameter display of overall, sub-system and module. 4.8.3 It shall have the capabilities of fault monitoring, fault module self-detection and fault isolation, and provide image and sound alarms for serious fault information. 4.8.4 Prompts and confirmations should be made for parameter modification and equipment operation; the overall equipment parameter backup and loading function should be provided. 4.8.5 The original video display, recording and playback functions shall be provided locally and remotely. 4.8.6 Video surveillance functions shall at least include. --Display original video, clutter map; --Measure the distance, azimuth and echo intensity of the target within the scope of action; -Perform distance scaling, center point offset, etc.; --Current working status and parameters; --Automatic storage and printing of the displayed content. 4.8.7 The antenna feeder system should be able to monitor the status of each module and the antenna speed; it should be equipped with oil level, oil temperature, motor overtemperature, and wind pressure alarm functions. 4.8.8 The transmitting system should be able to monitor the status of each module, transmitting power and voltage standing wave ratio. 4.8.9 The receiving system should be able to monitor the status of each module. 4.8.10 The signal processing system should be able to monitor the status of each module and the performance of the signal processor generated by the test signal excitation in the system. 4.8.11 A radar system log should be established to record the operating status, operation process and various alarm status of the radar, and the storage time limit should not be less than 31 d. ......

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