Research On IR/MMW Compound Decoy Technology

In this paper, based on the interrelated theory of interfering IR and MMW, the characters of interfering IR/MMW compound pyrotechnic decoy were studied, the study technology route of IR/MMW compound pyrotechnic decoy, which plated metal lamella on carbon fiber fabric and coated the high-powered pyrotechnic powder, was put forwarded.The interrelated characteristics of metal deposited carbon fiber fabric, which was the MMW interference component in compound pyrotechnic decoy, was studied, the processing conditions for electroless nickel, copper and silver plating on carbon fiber were optimized, and the processing conditions for electroless nickel without palladium activation and electroless silver enviorment-friendly and directly were put forward creatively. The surface microcosmic appearance and resistances of metal deposited carbon fiber fabric were measured.The technics of coating pyrotechnic powder on one side of metal deposited carbon fiber fabric were studied, the formula of IR/MMW compound pyrotechnic decoy was designed experimentally, the components design principle was presented, the initial formula, consisting of (C₂F₄)_n, magnesium powder, flammable agent KR, infrared active matter HW and adhesive fluorine rubber etc., was screened out through plenty of experiments. Using the regression and rotation design method, the initial formula was optimized and designed, connecting to the performance test experiment of spectral infrared radiant properties of IR/MMW compound pyrotechnic decoy, the author optimized the optimal formula of IR decoy medicament, and revealed the rules of each components interference the ability of radiation in 3～5μm and 8～14μm wave by use of MATLAB software to make three-dimensional graph.The characteristic of IR/MMW compound pyrotechnic decoy was tested and the experimental study results indicate that the IR spectral radiant luminance of the optimal formula enhance distinctly; the RCS values of different metal coated carbon fiber fabric increase with the increasing of conducting ability of metal deposit and the RCS values of the same metal coated carbon fiber fabric increase with the thickness of metal deposit; the conducting ability and RCS value of Cu-Ag deposited carbon fabric are the best and largest than any other metal coated carbon fiber fabric under the same plating time.