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To offset the weakness of acoustic surveillance system, a underwater magnetic surveillance system was designed for port protection. A three classes' bus topology structure was adopted. The system comprised scene devices, transmission cable, and console. The scene devices included several gateways and more nodes with a magnetometers array. Three protocols of RS-485 bus, CAN bus, and CAN-Ethernet transform was designed for data transmitting. Nodes worked in autonomous intelligent mode based DSP microprocessor. Each node managed a magnetometers array via RS-485 bus, implemented signal sampling as well as target detecting and positioning, and sent results to the gateway via CAN bus when need. The principle prototype consisting of a console, a gateway, and three nodes with an array of ten magnetometer cells was developed. The experiment results prove the system effective.

With the development of infrared missile guidance system fleetly, the simulation plays more and more important role in the integrated testing of infrared missile guidance system, because it is a key technology to shorten manufacture period and to advance efficiency-cost ratio. This paper designs hardware-in-the-loop simulation platform of infrared guidance system, including: the simulation modeling of kinematics equation of characteristics, the generation technology of target background and antagonistic, the key technology design of hardware and software are researched thoroughly about signal resting, their constructions are discussed in detail.

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The paper describes the hub flop amount measuring machine control system design and basic principle in detail. The whole control system uses MC9S12DP256 as the core of the device for measurement, control and data analysis, which can be used as the controller of the measuring instrument to control and communication with PC data transfer control. The peripheral interfaces are distributed according to the control system requirements and to achieve precise control of the stepper motor as well as the probe start and stop within a specified amount of pre-press up and down, horizontal movement through MC9S12DP256.