Application field
Based on the PCI-9846 weapon data link test technology applied to the aviation field, the data link simulation scenario was tested.
challenge
Based on the PCI-9846 weapon data link test system, the computer and weapon data link analog function module is the core. Its advanced performance, compact structure and strong maneuverability have unique aspects in simulation application testing and protocol testing, and have achieved dynamic testing. The requirements of intelligent testing.
The performance indicators of the tested weapon data link system cover RF performance, time synchronization, signal format, image processing, electromagnetic compatibility, antenna tracking, etc. The test system realizes joint debugging of data link system, technical position detection, production adjustment, and failure. Discovered and other functions have achieved the goal of system-wide integrated dynamic testing.
In the aspect of test technology, based on the theory of electromagnetic wave propagation, the test method of the actual environment of the micro-dark room and near-field simulation open space is proposed. The transfer function between the near-field transceiver antennas is determined by the microwave network system identification technology, and the real-time online RF channel quantitative measurement is realized. Reduce passive intermodulation, solve high power protection and electromagnetic compatibility problems; propose protocol testing technology for weapon-specific data link test system, perform protocol statistical analysis, data processing, and realize weapon against this kind of protocol testing technology Data chain protocol consistency, interoperability, robustness testing.
solution
The PCI-9846 weapon data link test system is mainly composed of industrial control computer and weapon data link analog function modules. The Delphi programming language and the Chinese-style graphical user interface are used to realize the operational functions required by the test system. The industrial control computer internally expands multiple RS-422 serial interfaces and USB 2.0 interfaces. The external RS-422 interface is used for transmitting bidirectional serial control data with the weapon testing system, receiving command information, and transmitting the status information of the data link transmission to the weapon testing system through the internal RS422 interface, and also capable of weapon data. The chain simulation device performs command control. The USB2.0 interface is used to transfer or receive image and information files in an externally specified format for image and information data restoration processing. The industrial control computer is also used for test control, receiving commands from the weapon test system or locally generating commands to control the programmable attenuator via the I/O digital interface for testing data link receiver sensitivity. The industrial computer is plugged into the PCI-9846 high-speed data acquisition card to complete the image data acquisition and image analysis processing, and realize image storage and playback. The weapon data link simulation device completes the transmission of the command information, the reception of the image and the status information. The instructions are generated by a weapon test system or a local industrial computer, and the generated commands are processed, modulated, and transmitted by the module's command baseband. At the same time, the image receiver of the module receives the signal and demodulates and performs baseband processing, and inputs it to the PCI-9846 high-speed data acquisition card, and the received image is analyzed and processed by the industrial computer.
1 Overview
The traditional weapon data link test method is mainly based on the static performance parameter detection of the transmission system. It is difficult to make a correct judgment on the transient abnormality of the data link, and it is even more impossible to perform dynamic simulation test on the normal use situation. It is not effective to ensure reliable and reliable application of the data link. Weapon data chain dynamic simulation test is an important part of distributed parallel test developed by SDP (Structured Distributed Programming) technology for the new generation weapon system. While completing the data link itself test, it also simulates the other components of the weapon system. Provide matching functions. ADLINK's PCI-9846 high-resolution high-speed data acquisition card in the weapon data link test system, with its wide dynamic range, onboard 512 MB memory and outstanding characteristics of the PCI bus speed limit, to help the weapon data link test, satisfied Complex application requirements such as parallelism, dynamics, and simulation testing have become the technical highlights in test systems and have improved the level of testing technology.
The test system has the advantages of small volume, high quantitative test accuracy, high automation level and reliable operation, and has achieved modularization, generalization and serialization requirements, and has significant features in military and economic benefits.
2. Data link simulation test technology
The weapon data link test system is based on the computer and weapon data link simulation module. Its advanced performance, compact structure and strong maneuverability have unique aspects in simulation application testing and protocol testing, and meet the requirements of dynamic testing and intelligent testing.
The performance indicators of the tested weapon data link system cover RF performance, time synchronization, signal format, image processing, electromagnetic compatibility, antenna tracking, etc. The test system realizes joint debugging of data link system, technical position detection, production adjustment, and failure. Discovered and other functions have achieved the goal of system-wide integrated dynamic testing.
In the aspect of test technology, based on the theory of electromagnetic wave propagation, the test method of the actual environment of the micro-dark room and near-field simulation open space is proposed. The transfer function between the near-field transceiver antennas is determined by the microwave network system identification technology, and the real-time online RF channel quantitative measurement is realized. Reduce passive intermodulation, solve high power protection and electromagnetic compatibility problems; propose protocol testing technology for weapon-specific data link test system, perform protocol statistical analysis, data processing, and realize weaponry through this protocol testing technology Data chain protocol consistency, interoperability, robustness testing.
3. Data link test system composition
3.1 hardware components
The data link test system is mainly composed of an industrial control computer and a weapon data link simulation module, as shown in Figure 1.
The industrial control computer internally expands multiple RS-422 serial interfaces and USB 2.0 interfaces. The external RS-422 interface is used for transmitting bidirectional serial control data with the weapon testing system, receiving command information, and transmitting the status information of the data link transmission to the weapon testing system through the internal RS422 interface, and also capable of weapon data. The chain simulation device performs command control. The USB2.0 interface is used to transfer or receive image and information files in an externally specified format for image and information data restoration processing. The industrial control computer is also used for test control, receiving commands from the weapon test system or locally generating commands to control the programmable attenuator via the I/O digital interface for testing data link receiver sensitivity. The industrial computer is plugged into the PCI-9846 high-speed data acquisition card to complete the image data acquisition and image analysis processing, and realize image storage and playback.
Figure 1 Data link test system composition
The weapon data link simulation device completes the transmission of the command information, the reception of the image and the status information. The instructions are generated by a weapon test system or a local industrial computer, and the generated commands are processed, modulated, and transmitted by the module's command baseband. At the same time, the image receiver of the module receives the signal and demodulates and performs baseband processing, and inputs it to the PCI-9846 high-speed data acquisition card, and the received image is analyzed and processed by the industrial computer.
The application test block diagram of the data link test system is shown in Figure 2.
Figure 2 Data link test application block diagram
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