This paper dealt with the reflection spectrum and polarized reflection spectrum of 20 rocks in 2πspace, then get the model of reflection spectrum of rock surface in 2πspace. We measured the change of the reflection spectrum and polarized reflection spectrum according to the altering of the incidence angle, vertex angle, azimuth angle, bands, polarization. The results shows: the influence of incidence angle to the spectrum curve is very strong. And when the vertex angle is equal, the horizontal azimuth polarizes the rock spectrum, and elongates the circular spectrum in mirror direction, and the shape after distortion is much like ellipse. The polarization has influenced on the intensity that the rock spectrum reflected, but has no evident influence on the characteristics of wave shape of rock in 2π space. So we can describe the whole reflection spectrum characteristics (including polarization) of rock surface in 2πspace by measuring and calculating the value of e and p in several key directions.

At present, a new integrated navigation, which is used in the location function of reference gravity anomaly map to control the errors of Inertial Navigation System (INS), is developed in marine navigation. It is named Gravity Aided INS. Both INS and gravity anomaly computed in real-time need a three-dimensional marine normal gravity model. Conventionally, a reduction method applied in geophysical survey is directly introduced to process observed value. This reduction doesn't separate anomaly and normal gravity in observed value, so errors are occurred. The three dimensional marine normal gravity model is derived from J2 gravity model, and suitable for the region depth less than 1000m. Also some experiments and calculations are finished.

In order to research the global change and analyze the characteristics of land surface or atmosphere, an Earth Observation Station usually needs a high-definition large screen to display the satellite remote sensing image. Under the development of digital imaging technology, this application can be put into practice. In this paper, the optical engine, a key technique in the digital imaging, is introduced. Then the basic principle and technical difficulties of optical engine are discussed in detail. It is testified that the optical engine technique can make the satellite remote sensing image displayed in high-definition model.

An observa tor is combined with fuzzy set theory and neural networks for monitoring transformer operation-state. It has overcome the limitations such as the dependency on experts for fuzzy rule and no auto-adaptation for fuzzy set. The auto-regulation of membership functions and the self-organization of fuzzy rule are realized by the self-learning of the neural networks. This approach is proven by experiments.

In this paper the authors analyzed the data collection of seabed terrain, the influence factors on measurement precision and the data computation in time or frequency domain. In order to estimate the noise embedded in the received data, the structure and algorithm of characteris tic matching filter based on the entropy concept is developed and discussed in detail. It is shown that the noise data can be removed effectively and the high precision seabed terrain be simulated by the filtering method.