At present,the impact of long-term natural environmental effects on missile equipment is getting increasingly attention by more and more equipment development affiliations,and a large number of natural environmental tests have been carried out for multi-level products to verify and evaluate the adaptability of natural environment.In order to more effectively implement and promote the natural environmental test work for equipment,the natural environmental test requirements,test types,test technology development and its application of typical missile equipment are demonstrated on the basis of both characteristics and weak links of typical missile equipment.Moreover,as to the problems encountered in the implementation of current natural environmental test,the development suggestions of missile equipment natural environmental test technology are put forward in terms of system planning,data mining,research and application of accelerated test technology.

The long term natural environment adaptability of missile cannot be evaluated completely in the short term due to the low degeneration of natural environmental effects,though extremely limited environmental tests have been carried out in the missile laboratory in response to various environmental factors in the natural environment.A set of comprehensive evaluation methods is provided for long-term natural environmental effects,which defines the natural environment adaptability verification method for different types of missile products.Through the comprehensive utilization of the basic data of natural environment adaptability and various test verification information,the systematic,comprehensive and rapid evaluation of the missile's natural environment adaptability is realized.

Aiming at the current evaluation methods of technical contribution rate are mostly based on static combat networks with low credibility of the evaluation results,an evaluation method of technical contribution rate of U.S. aircraft carrier combat system-of-systems considering the influence of time and space is proposed.The U.S. aircraft carrier combat network model considering time and space factors is constructed based on OODA (observation,orientation,decision,action) operation loop.The effectiveness evaluation method of combat system-of-systems based on self-information is proposed. Combining the degree of technical support for equipment combat technical indicators, an evaluation model of technical contribution rate is established.Taking the air defense and anti-missile combat system-of-systems of the U.S. aircraft carrier as an example,the results show that the proposed method fully takes into account the spatial-temporal dynamic characteristics of the combat network,which can assess the contribution rate of technology more realistically and objectively,and support for the equipment project approval demonstration and technology optimization development.

In the measurement of near field electromagnetic scattering characteristics, the transmitter′s high-power signal enters the receiver directly or after reflection, which is easy to cause the receiver block. After power amplifier, emission signal waveform changed and got a long tail, the tail and the target scattering echo signal enter into the receiver at the same time, the echo signal will be seriously affected by the trailing. Above problem will lead to the insufficient of receiver dynamic range and the measuring capability of the system is influenced. A method with time domain filtering and optimization design of antenna is proposed, which improves the receiver isolation of the near-field electromagnetic scattering characteristics of measuring and the low radar cross-section (RCS) measurement.