Abstract
This paper presents a practical electrical- measuring method with the help of mechanical means through which the effect on the Optoelectronic components caused by space radiation can be measured qualitatively and quantitatively by the from of electric signal.

In this paper, the simulated space radiation environment, the working state of the components and the test requirements are described in detail. The block diagram of the measurement circuit, the schematic drawing of the measurement assembly and results of measurement are given.

Besides, concrete application of optoelectronic components in the IRMSS (Infrared Multi-spectral Scanner) is briefly described in this paper.

Introduction
All space instruments must be adapted to radiation environment in their service life. Different radiation has different effect on the space instruments. Optoelectronic components are widely used in optoelectronic techniques, but they are limited to be used in space because of the radiation performance of optoelectronic components. The method study of measuring anti-radiation for optoelectronic components is carried out around tueir concrete application in the IRMSS of CBERS (China-Brazil Earth Resources Satellite)

Each optoelectronic component has both optical and electrical features, which make it special to measure its anit-radiation performance. The component here refer to luminescent and photosensitive units. This paper presents a practical electrical-measuring method with the help of mechanical means through which the effect on the Optoelectric components caused by space radiation can be measured qualitatively and quantitatively can be measured qualitatively and qualitatively by the form electric signal, and the results of measurement are the basis of taking anti-radiation protection measures and design.

2 Anti-radiation performance measurement of optoelectronic components

2.1 Radiation environment
Cobalt radiator which is isotropic is used to simulate the space radiation environment (y-ray), the radiative dose is accumulative while counted.

2.2 The block diagram of the measurement circuit and the schematic drawing of the measurement assembly.

2.2.1 The block diagrams of the measurement circuit, see figure 1.

Figure 1: The Block Diagram
2.2.2 The schematic drawing of the measurement assembly, see figure 2.

Figure 2 the schematic Drawing