Review on Evaluating Methods of Thermal Infrared Camouflage Performance of Textiles

Thermal infrared camouflage fabrics play an important role in the countermeasure of thermal infrared detection.The infrared emissivity and the thermal infrared image are commonly used to characterize the infrared radiation features and the camouflage performance of fabrics respectively.In the paper,the commonly used testing and evaluating methods for thermal infrared camouflage fabrics are reviewed.The principles and problems of the calorimetry method and the reflectivity method for measuring infrared emissivity of fabrics are illustrated.The characteristics and limitations of the threshold conditions method based on the detectability of infrared thermography and the manual interpretation method for evaluating camouflage performance are also revealed.Finally,the development direction of testing and evaluating methods for thermal infrared camouflage fabrics are pointed out.