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As the main site for the test and identification of the equipment including air-to-surface guided weapons, optoelectronic targeting pods and so on, the shooting range is in urgent need of first-hand infrared measurement data as the basis for assessing scene fidelity in order to construct a qualified platform for the future digitalized assessment of weapons. In this paper, it selects the typical climate and geomorphological characteristics of the Gobi shooting range, analyzes the basic principles of infrared radiation characteristic test, designs and collects the infrared images of the Gobi ground object background in different time intervals and different observation angles based on the optical measurement UAV platform, obtains the change rules in the infrared radiation characteristics of different ground objects such as plant, Gobi, cement and so on over time through data processing analysis. According to the test results, it shows that the temperature and brightness of typical ground objects such as Gobi Desert, cement pavement, plant roof covered with insulation material, exposed plant roof and so on keep rising, which reach its maximum around 14:30 and then decrease as the sun sets. Among them, the radiation temperature and brightness of the Gobi Desert at different time points are higher than that of the cement pavement, according to the analysis, it can be found that cement has a certain cumulative effect on thermal radiation and it is not easy to dissipate, and the Gobi Desert is more sensitive to the sun due to diffuse reflection effect so it is easy to accumulate heat and it is not easy to dissipate; The radiation temperature and brightness of the exposed plant roof at different time points are higher than that of the plant roof covered with thermal insulation material; It will directly cause changes in the infrared radiation characteristics of ground objects due to the sun shelter and coupling interaction between ground objects.
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