SJ 20660-1998 General specification for ground-based air warning radar
Some standard content:
Military standard of the electronics industry of the People's Republic of China FL5840
SJ20660-1998
General specification for ground-based air warning radal1998-03-11 issued
1998-05-01 implemented
Approved by the Ministry of Electronics Industry of the People's Republic of China 1 Scope
2 Reference documents
3 Requirements
3.1 Qualification
3.2 Reliability··
3.3 Materials, components.
3.4 Design
3.5 Structure
3.6 Standard parts
Maintainability
3.8 Transportability
3.9 Man-machine-environment system engineering
Safety·．
Nuclear reinforcement
Components…
Electromagnetic compatibility
Dimensions, weight
Color and surface condition
Product logo and code
Appearance quality
Main tactical performance·
Main technical performance
3.20 Environmental conditions
4 Quality assurance regulations
4.1 Inspection rules
4.2 Inspection methods
5 Delivery preparation
5.1 Sealing and packaging．
5.2 Packing.
5.3 Transportation and storage
5.4 Marking
6 Notes·
6.1 Intended use
G.2 Contents of order documents·
6. 3 Definitions
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People's Republic of China Electronic Industry Military Standard General Specification for Ground-based Air Warning Radar
Geaeral specification
For ground-based air warning radar1 Scope
1.1 Subject content
SJ20660-1998
This specification specifies the requirements, quality assurance and delivery preparation for ground-based air warning radar (hereinafter referred to as radar). 1.2 Scope of application
This specification applies to various types of military radars equipped on the ground. 1.3 Classification
Radars are generally classified according to the loading type:
5. Fixed type,
h. Mobile type.
2 References
The valid versions of the following standards and specifications constitute a part of this specification within the scope specified in this specification. GB 2894~82 Safety signs
GB3784—83 Radar terminology
GJB74.2-85 Military ground radars must meet general technical conditions Common terminology CFB74.4-85 Military ground radars General technical conditions Technical conditions project format GJB74.5-85 Military ground radars General technical conditions Design and manufacturing requirements GJB74.6-85 Military ground radars General technical conditions: Environmental conditions requirements and test methods GJB74.8-85 Military ground radar passband technical conditions Air intelligence radar flight inspection specifications GJB74.985 Military ground radars General technical conditions Acceptance rules GIB74.14-85 Military ground radar passband Packaging, transportation and storage with technical condition mark GJB151.1-86 Requirements for electromagnetic emission and sensitivity of military equipment and subsystems General requirements GJB151.4-86 Requirements for electromagnetic emission and sensitivity of military equipment and subsystems Requirements for equipment and subsystems in ground installations (fixed and mobile, including belt-type and wheeled vehicles) (Class A3) (GJB152-86 Measurement of electromagnetic emission and sensitivity of military equipment and subsystems GJB1770.1-93 Maintainability of air intelligence radar Maintainability requirements GJB1770.3-93 Maintainability of air intelligence radar Maintainability test and evaluation Ministry of Electronics Industry of the People's Republic of China 1998-03-11 Issued 1998 - 05 — 01 Implementation
SJ 20660-1998
GJB887-90 Test method for anti-ground clutter performance of military ground radar GJB899-91 Reliability identification and acceptance test GJB909-91 Quality control of key parts and importance SJ207.1~207.4—82 Management system of design documents SJ Ground-based air warning radar tactical performance test method 3 infants and requirements
3. 1 Qualification
The radar submitted in accordance with this specification shall be a product that has passed the qualification or has been approved. 3.2 Visibility
Unless otherwise specified, the lower limit of the mean time between failures (MTBF) of the radar (91) shall not be less than 150h. 3.3 Materials and components
3.3.1 The selection of materials shall be in accordance with the provisions of Article 4.9 of GJB74.5. 3.3.2 The selection of components shall be in accordance with the provisions of Articles 4.1 to 4.5 of GJB74.5. 3.3.3 Materials and components that are resistant to salt spray corrosion (or have been treated with salt spray corrosion resistance) shall be selected, and sealed seals shall be selected as much as possible. Components to be installed.
3.3.4 All components (such as semiconductors and integrated circuits) entering the factory shall be inspected and screened. Those that have exceeded the storage period shall be re-inspected and qualified before they can be used. When processing and installing, there shall be a seal or acceptance document of the inspection station of the verification and inspection department. 3.3.5 Purchased parts, outsourced parts, and supporting parts shall be quality certified (certified) and have long-term fixed-point supply guarantee conditions. 3.3.6 The quality control of key and important parts shall be carried out in accordance with the provisions of GJB909. 3.4 Design
3.4.1 Radar design shall be carried out in accordance with the provisions of Article 1.2 and Articles 3.1~3.5 of GJB74.5. 3.4.2 The completeness of technical documents in radar design shall be carried out in accordance with the provisions of SJ207.1~207.4. 3.4.3 The processability requirements in radar manufacturing shall be carried out in accordance with the provisions of Article 1.7 of GJB74.5. 3.5 Structure
The radar structure should be firm, safe and reliable, and strive to be small in size and light in weight (miniaturization and modularization), easy to operate and maintain, so as to ensure that the radar and operators can work safely and normally under the specific environmental conditions of coasts, islands and mountains. The requirements for high-frequency connectors, feeders, antennas, antenna bases, transmission mechanisms, printed circuit boards and microstrip boards should comply with the provisions of Articles 4.4 to 4.8 of GJB74.5.
3.6 Standard parts
3.6.1 The level of generalization, serialization and combination (modularization) should be improved in radar design, and standard parts, general parts and replaceable modular units should be used as much as possible to ensure good interchangeability of components with the same functions between subsystems. 3.6.2 The assembly parts, printed circuit boards, modules, etc. in the radar should be interchangeable with the corresponding replaceable units in the spare parts. After the interchange, the adjustable parts can be slightly adjusted on site to work properly. 3.7 Maintainability
3.7.1 Maintainability requirements
According to the provisions of Article 4.2.1.1 of GJB1770.1, the maintainability index of the radar at the battlefield level (i.e. radar station level on-site use conditions): unless otherwise specified, its MTTR should not exceed 30min. 3.7.2 Built-in self-test (BET) requirements
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S3 20669-1998
The radar should have built-in automatic detection capabilities. Under the conditions of locating the fault to the replaceable unit (the number of replaceable units located is specified by the product specifications) at the battlefield level (station level) maintenance site, unless otherwise specified, its self-test technical performance is as follows,
disk. Fault detection rate should be greater than 95%, wwW.bzxz.Net
b. Fault isolation rate should be greater than 90%
c. Self-check alarm rate should be less than 2%,
3.8 Transportability
3.8.1 The transportability of the radar should comply with the provisions of Article 1.1.1 and Articles 1.1.1.1~1.1.1.4 of GJB 74.5. 3.8.2 After the radar is loaded on a vehicle (shelter) or packed in a box, it should be able to withstand marching and transportation under the conditions of roads, distances and speeds specified in Article 3.20.6.
3.9 Man-machine-environment system engineering
3.9.1 In radar design, the design criteria and principles of "man-machine-environment system engineering" should be fully utilized to make the operation and maintenance of the staff convenient, safe and reliable. 3.9.2 The requirements of "man-machine-environment system engineering" in radar design should comply with the provisions of Articles 1.4.1 to 1.4.10 of GJB74.5.
3. 10 Safety
3.10.1 Safety design
The radar should be equipped with monitoring, alarm, explosion-proof, anti-shock, anti-biological, power-off protection, automatic fault insurance and monitoring and other safety devices. The specific design requirements shall be in accordance with GJB74.5. 1.8.3 and 1.9. 3.10.2 Safety signs
Wherever there are safety requirements (such as protective covers, inspection doors, covers, antenna stops, etc.), there should be eye-catching safety precautions and safety signs. The safety signs should comply with the provisions of GB2894. 3.11 Nuclear reinforcement
In order to improve the survivability of the radar in the event of a nuclear attack, the radar should be designed with nuclear reinforcement (such as entering the well or going down the well) when necessary. The specific requirements shall be specified in the order contract. 3.12 Parts
3.12.1 The processing of parts and components shall comply with the drawings, and their assembly and connection shall be firm and reliable, and there shall be measures to prevent loosening. 3.12.2 Protective devices shall be added to parts that are easily damaged, and moisture-proof, salt spray-proof and mildew-proof treatment shall be carried out for parts and components that are easy to absorb moisture and mildew.
3.12.3 Metal parts should not have rust and other mechanical damage, and all contact and friction parts should be protected by lubrication according to the specifications.
3.13 Electromagnetic compatibility
The electromagnetic emission and sensitivity requirements to be achieved shall be in accordance with the provisions of RE02, KE03, and RS03 in Table 1 of Chapter 5 of GB151.1. Its limit values shall be in accordance with the provisions of Chapters 15, 16, and 19 of GB151.4. 3.14 Dimensions and weight
Should comply with the provisions of Article 1.1 of GJB 74.5. 3.15 Color and surface condition
3.15.1 The surface color of the radar and its supporting equipment is generally military green. If there are special requirements, the various identification colors of the radar shall be specified in the order contract. It shall be in accordance with the provisions of Article 3.6 of GJB74.5. 3
SJ 20660-1998
3.15.2 The colors of equipment installed indoors and outdoors should be coordinated and meet the overall requirements. 3, 15. 3 The surface restoration and chemical treatment should comply with the provisions of Articles 4.11.1 to 4.11.3 of GJB 74.5. 3.16 Product logos and codes
The logos in radar equipment should comply with the provisions of Article 3.6.3 of GJB 74.5. The various logos and codes in radar equipment should be consistent with the numbering marks on the corresponding circuit diagram, assembly diagram, wiring diagram and electrical connection diagram.
3.17 External quality
3.17.1 The appearance should be beautiful and elegant, with harmonious colors. The external surface should be smooth and free of dents, scratches, cracks, deformation, etc. The coating layer should not bubble, crack or fall off. 3.17.2 All switches, knobs, buttons, etc. shall be arranged in a unified and coordinated manner. Operation shall be flexible, correct and convenient. Parts, plugs, etc. shall be fastened without looseness, and the positioning parts shall be correctly positioned. 3.17.3 The signs, text symbols and signs indicating the functions shall be clear, neat and legible. 3.18 Main tactical performance
3.18.1 Working frequency and bandwidth (see 4.2.17.1) Radar operating frequency and bandwidth shall comply with the requirements of the combat mission book and the national product specifications. 3.18.2 Detection range (see 4.2.17.2)
3.18.2.1 Given conditions
Unless otherwise specified, the general given conditions are as follows: Detection probability Pa0.5 or 0.8#
b. False alarm probability, Pla 10-*
c. Target effective reflection area id 2m
d. Target fluctuation, SWI,
e. Antenna rotation speed: rated rotation speed,
3. 18. 2. 2 Maximum detection distance
The maximum detection distance RmBx at different heights is specified by the product specification. 3.18.2.3 Maximum coverage height
The maximum coverage height is specified by the product specification. 3. 18. 2. 4 Maximum elevation angle
The maximum elevation angle is specified by the product specification.
3. 18. 2. 5 Azimuth
The azimuth angle is 360°
3. 18.2. 6 Vertical plane operation and measurement diagram (force reduction diagram) Vertical plane operation and measurement diagram (power diagram) is drawn according to the specific conditions of each type of radar and is drawn according to the product specification. 3.18.3 Detection accuracy (see 4.2.17.3) 3.18.3.1 Range accuracy (RMS value): Unless otherwise specified, it should not be greater than 800ml. 3.18.3.2 Azimuth accuracy (RMS value): Unless otherwise specified, it should not be greater than 1°%. 3.18.4 Target resolution (see 4.2.17.4) 3.18.4.1 Range resolution: Unless otherwise specified, it should not be greater than 500m. 3.18.4.2 Azimuth resolution: Unless otherwise specified, it should not be greater than 2°.+.
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3.18.5 Data rate (see 4.2.17.5) SJ 20660 -1998
Unless otherwise specified, the data rate for detecting targets should be selected within the antenna rotation speed of 3r/min or 6r/min. 3.18.6 Anti-active interference capability (see 4.2.17.6) 3.18.6.1 Frequency conversion capability
Frequency conversion mode, frequency conversion range, frequency conversion speed, frequency conversion points and adaptive color conversion capability, etc., shall be specified in the product specifications. 3.18.6.2 Anti-flap interference capability
a, antenna sidelobe level, unless otherwise specified, the first clipped lobe level shall be at least 25dB lower than the main lobe level, and other side lobe levels shall be at least 30dB lower than the main lobe level,
h, Sidelobe interference suppression capability: specified in the product specifications. 3.18.6.3 Antenna polarization selection capability
Polarization form, polarization working mode, polarization conversion speed, etc., shall be specified in the product specifications. 3.18.6.4 Self-defense distance
In the case of active interference, the radar self-defense distance after applying various anti-interference measures shall be specified in the product specifications. 3.18.7 Anti-passive interference capability (see 4.2.17.7) 3.18.7.1 Anti-background interference capability
%, Anti-ground clutter interference capability, the improvement factor (1) for ground clutter interference, shall not be less than 40dB unless otherwise specified; or expressed by target visibility in ground clutter, the visibility coefficient SCV shall not be less than 34dBh, Anti-meteorological (dynamic clutter) interference capability: the improvement factor for rain clutter interference, unless otherwise specified, its lower limit shall be 15dB, the improvement factor for other meteorological interference shall be specified by the product specification. 3.18-7.2 Anti-box bar, box wire capability
The improvement factor for artificial passive clutter interference such as box bar, box wire, etc., unless otherwise specified. Its lower limit shall be 20dB. 3.18.8 Data transmission and remote control capability (see 4.2.17.8) Data transmission and remote control capability shall be specified by the product specification. 3.18.9 Identifier detection range (see 4.2.17.9) The interrogation and response range of the Identifier should cover the radar detection range specified in 3.16.2. 3.18.10 Terminal equipment requirements (see 4.2.17.10) 3.18.10.1 Display equipment requirements
a: The type, specification, quantity and layout of the display equipment shall be specified by the product specification. The display content (characters and graphics, etc.) shall be specified by the product specification. 3.18.10.2 Data processing equipment requirements
3.18.10.2.1 The point trace recording method and point trace processing capability shall be specified by the product specification. 3.18.10.2.2 Track processing shall be specified by the product specification. 3.18.10.2.3 Input and output methods shall be specified by the product specification. 3.18.11 Interface requirements (see 4.2.17.11) 3.18.11.1 Radar and IFF interface requirements According to the interface protocol, the radar shall have the capabilities of transmitting, frequency regulation and antenna synchronization control adapted to the IFF.
3.18.11.2 Radar and intelligence command system interface requirements According to the interface protocol, the radar shall have the physical interface capability of providing a visual signal to the intelligence command system, or providing signal and data information in the specified message format, etc.
3.18.11.3 Other interface requirements
SJ 20660-1998
The interface requirements between radar and other equipment such as image transmission, data transmission, remote control, etc. shall be specified by the product specifications. 3.18.12 Radar response speed (see 2.17.12) 3.18.1Z.1 Emergency start-up time: unless otherwise specified, the emergency parallel time should not exceed 3 minutes. 3.18.12.2 Normal start-up time: unless otherwise specified, the normal start-up time should not exceed 7 minutes. 3.18.12.3 Intercepting working mode conversion time, fast antenna up and down time, shall be specified by product specifications. 3.18.13 Mobility (see 4.2.17.13) 3.18.13.1 Mobility design
shall be carried out in accordance with the provisions of GJB 74.5, 1.6, 3.18.13.2 Loading method
, the loading method of fixed radar is boxing, and the loading method of mobile radar is loading on vehicles (tire trucks, trailers or shelters). 3.18.13.3 Transportation method
: The transportation methods of fixed radars are land, water, and air (transport aircraft or helicopter lifting): b, the transportation methods of mobile radars are land or water, C. In special cases, the product specifications should specify multiple compatible transportation methods according to combat use requirements. 3.18.13.4 Number of transportation units
8. The number of transportation units (boxes) of fixed radars is specified by product specifications: b. The number of transportation units of mobile radars, unless otherwise specified, consists of radar vehicles (including motor vehicle compartments or shelters, trailers, tractors), oil engine power station vehicles, command work vehicles, etc. 3.18.13.5 Erection and dismantling time
Under the specified meteorological conditions, staffing (personnel) and special tools (crane, etc.), the erection and dismantling time of radar (large, medium and small fixed stations, mobile stations and mobile stations) shall be determined by the product specifications. 3.18-14: Power supply requirements (see 4.2.17.14) 3.18.14.1 The power supply mode is municipal electricity or oil-electric 3.18.14.2 Unless otherwise specified, the rated frequency of the power supply is 50Hz ± 2.5%, the rated voltage is three-phase four-wire system, and the line voltage changes within the range of 380V ± 5%. The radar should work normally. 3.1814.3 The power consumption of the radar shall be specified in the product specification. 3.18.15 Continuous working capacity (see 4.2.17.15) Unless otherwise specified, the continuous working time of the radar under normal test atmospheric conditions shall be selected from 12.24, 36, and 72 hours, and the specific indicators shall be specified in the product specification. 3.19 Main technical performance (see 4.2.18) The main technical performance of the radar shall be selected from Chapter 8 of GJB74.4, and the specific indicators shall be specified in the product specification. 3.20 Environmental requirements
3.20.1 High temperature
High photography shall be specified in the product specification according to the following conditions. a. High temperature storage temperature: 60, 65℃,
h. High temperature working temperature: 40, 45 (; f.
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Constant condensation heat
SJ 20660—1998
Outdoor 50, 55℃
Wet and hot environment is in accordance with the conditions in Table 1 and is specified by the product specifications. Table 1 Condensation heat environment conditions
Use place
3. 20.3 Low temperature photography
Low temperature shall be in accordance with the following conditions and specified by the product specifications. a. Low temperature storage temperature: indoor relative difference of -40°C to outdoor relative difference of -40, -45, 50°C. b. Low temperature working temperature: indoor relative difference of 0, 10, -20°C and outdoor relative difference of -35, 40, -45°C. 3.20.4 Shock
Environmental temperature
The radar shall be able to withstand the shock environmental conditions during transportation, marching and use, and shall comply with G The requirements of Article 8.1 of JB74.6.
3.20.5 The radar should be able to withstand the various vibration environmental conditions encountered and should meet the requirements of Article 9.1 of GJB74.6. 3.20.6 Sports Cars
During transportation and marching, the radar should be able to withstand the conditions of the roads, distances and speeds specified below. 3.20.6.1 Road Sports Cars
8. Speed: (20~30) km/h on dirt roads and gravel roads; (20~30) km/h on asphalt roads, Concrete road: (30~40) kn/h. b Distance: 200, 500, 1000 km, the specific indicators are specified by the product specifications. The mileage of dirt roads and gravel roads shall not be less than 60% of the specified test mileage.
3.20.6.2 Test field sports car
. Rough corrugated road (wave distance 1B0cm, wave height 15cm), the speed is 8km/hlb. Stone road (Belgian stone road), the speed is 32km/h; c. Radial corrugated road (wave height 5~1 0cm), the speed is 24km/hld. Corrugated road (distance 5cm), the speed is 16km/hld. Corrugated road (wave quotient 8cm), the speed is 32km/h. 3.24.7 Rain
Rain environment conditions for radar during storage, transportation and use are as specified in Table 2, the rain time is 1h, .7
Use place
General
Outdoor wind and rain
3.20.8 Low pressure (altitude)
SJ 206601998
Shade Angle
Four-petal Surface
Majestic and Strong Cliff
mm/min
The low-pressure environment during air transportation and the low-pressure environment during use shall meet the requirements of Article 5.1 of GJH 74.6.
3.20.9 Bacteria
The radar shall have the ability to resist the corrosion of toxic bacteria. The specific requirements shall be specified by the product specifications. 3.20.10 Salt Spray
The radar shall have the ability to resist the corrosion of salt spray. The specific requirements shall be specified by the product specifications. 3,24.11 Solar Radiation
The radar antenna, feeder and other equipment installed in the sky shall have the ability to withstand the thermal and photochemical effects of solar radiation. The specific requirements shall be specified by the product specifications.
3. 2#.12 Wind resistance
Unless otherwise specified, the radar antenna system (for those without antenna cover) should be able to work normally when the relative wind speed is less than 20m/s. When the relative wind speed is 20m/s~30m/s, it should be able to work at a reduced speed. When the relative wind speed is greater than 30m/s, the radar antenna should stop working. When the relative wind speed is greater than 40m/s, the antenna should be laid down in advance. 3.20.13 Balling
Outdoor equipment such as radar wires and feeders should be able to withstand the ice load specified by the product specifications. Transmission parts such as antennas should have antifreeze protection covers or heating devices.
4 Quality assurance regulations
4.1 Inspection rules
4.1.1 Inspection responsibilities
Unless otherwise specified in the contract or order, the contractor shall be responsible for completing all inspections specified in this specification. If necessary, the ordering party or the higher-level competent authority has the right to inspect any inspection item described in this specification. 4.1.2 Responsibility for Conformity
All products must comply with all requirements of Chapters 3 and 5 of this specification. The inspections specified in this specification shall become an integral part of the contractor's overall inspection system or quality assurance program. If the contract includes test requirements not specified in this specification, the contractor shall also ensure that the products submitted for acceptance comply with the contract requirements. Quality consistency sampling does not allow the submission of products that are known to be defective, nor can the ordering party be required to accept defective products. 4.1.3 Inspection Classification
The inspections specified in this specification are divided into:
. Identification inspection
h. Quality consistency inspection.
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4.1.4 Inspection Conditions
SJ 20660-- 1998
4.1. 4.1 Unless otherwise specified, all inspections specified in this specification shall be carried out under the following normal test atmospheric conditions:. Temperature: 15~～35℃,
b. Relative condensation: 20%~80%
c Air pressure: the air pressure of the test site.
4.1.4.2 The power supply during the test shall comply with the provisions of 3.18.14.2. 4.1.4.3 The test instrument used during the test shall have sufficient accuracy and stability, and its accuracy shall be better than one-third of the accuracy of the measured index.
4.1.5 Appraisal test
Appraisal test shall be carried out in the test site approved by the ordering party or the superior appraisal agency. When one of the following situations occurs, the installation test shall generally be carried out:
b. When the product is stopped for a long time and the production is resumed
c. When there are major changes in product design, manufacturing process, key components and materials, which may affect product performance. 4.1.5.1 Number of samples
Unless otherwise specified, the contractor shall provide at least one (set) radar for identification inspection. 4.1.5.2 Inspection items and methods
Identification inspection shall be carried out in accordance with the items and methods listed in Table 3. Table 3
Derivability
Material.Components
Standard parts
Maintainability
Transportability
Human factors
Safety
Nuclear reinforcement
Parts
Technical requirements
Chapter number
Test method
Invitation number
Quality consistency inspection
Inspection items
Electromagnetic compatibility
Dimensions, measurements
Color and surface condition
Product logo and code
Appearance quality
Workmanship Operating frequency and bandwidth
Detection range
Detection accuracy
Target resolution
Data rate of detected targets
Anti-active interference capability
Anti-passive interference capability
Data transmission and remote control capability
Detection range of friend-or-foe identification device
Terminal equipment requirements
Interface requirements
Radar start-up time
Mobility
Power supply requirements
Continuous working capability
Main technical performance
SJ 20660--1996
Continued Table 3
Technical requirements
Article number
Test method
Chapter number
4. 2. 17. 1
4. 2. 17. 2
4. 2. 17. 4
4. 2.17. 5
4. 2-17. 6
4 2-17. 7
4. 2. 17. 9
4.2.17.10
4. 2. 17. 11
4. 2. 17. 12
4. 2. 17. 13
4.2.17.14
4.2.17.15
4.2.18
Quality and validity test
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