Reseach On Passive Millimeter Wave Imagine System Display And Control Terminal Design Based On ARM Operating System

Blackbody radiation theory is the basic theory of Passive millimeter-wave(PMMW) imaging technology, millimeter wave radiation energy received by the scene and the object itself, the difference in energy between them to achieve imaging. Use image preprocessing, super-resolution imaging processing algorithms to improve the quality of the results.Passive millimeter-wave imaging has three characteristics: a specific material has a certain ability to penetrate(anti- camouflage ability);metal objects have a higher image contrast; able to penetrate clouds, battlefield smoke, can all-time, all-weather work.Currently, a lot of passive millimeter wave imaging technology used in counter-terrorism, airport security, hazardous materials detection and so on.Early imaging system display and control terminals are generally treated with a computer, the computer’s volume is too huge, does not meet the integration and miniaturization trend.In order to gradually achieve integration, miniaturization, in the study of the subject of passive millimeter wave imaging system, using an embedded system as a display and control terminals. The embedded system used in PMMW imaging system display control unit design, would have been greatly improved integration, portability, reliability, cost of control systems. Because passive millimeter wave imaging system’s applications in the military field and the security aspects,high integration, high portability, high reliability embedded has a significant value.This paper relies on related projects, does a in-depth research on the imaging system display and control terminals. Contents and results are summarized as follows:1 Combined imaging system’s technical indicators, computing system parameters, does a research on the embedded system and completes the parts selection, and then, completes the design of display and control terminals. Including the selection of hardware platform, determining transmission interface, determining operating system, determining program development environment2 Established the development environment in the host Linux, the host and target platforms to build cross-compiler environment, complete the display and control terminals operating system’s Linux kernel customization and transplantation and root file system production.3 Open the interface between the display and control terminal and imaging system’s other module(between the signal processing and pre-processing unit, a servo control unit is the serial ports,between the signal processing unit is the SPI interface), completed the preparation and testing of the interface driver.4 Completed the debugging between the display and control terminal and the signal processing unit, the result can meet the real-time, correctness requirements of imaging system.5 Completed the design and implementation of the interface of the display and control terminals. Including implemented the key’s function of scanning and control area and the image contrast area. At last, completed the implementation of image data’s receiving and display...