Abstract: Experimental study is carried out by using a set of infrared radiation heating equipment for the two mutual vertical surfaces of the Small-size High Temperature Wave-Transparent cover board, as well as an equivalent simulation test under non-linear high temperature conditions. Using the finite element method, under the condition of the radiation heat exchange, with consideration of the thermal conductivity of the antenna structure and the heat transfer of the surrounding medium, numerical simulations are carried out for the test process. With the quartz lamp radiation heating to complete the assessment test, the test data and numerical simulation results are in good agreement, which verifies the credibility and validity of the numerical simulation method.