Aimed at the requirement of terminal guidance simulation test for a certain infrared seeker, an infrared target simulator which is used to complete the non-uniformity correctionand target tracking performance detection was developed. The simulator integrates black body and infrared target simulation system, and switches two working modes (testing and non-uniformity correction) by means of electronic control. This article introduces the main composition, working principle and realization of each subsystem, and tests the key performance indicators of the system. The results show that the parameters of the system meet the design requirements and achieve the desired application results.
The range analysis of the infrared detection system is the first task in the design of the detection system. The traditional range model based on the signal-to-noise ratio is only suitable for a uniform background. For complex backgrounds, the fluctuation of background clutter is the main factor restricting the detection distance, and the results based on the signal-to-noise ratio model may deviate greatly from the actual situation. Based on the characteristics of the re-entry process, this paper analyzes the dynamic process, and establishes an infrared detection distance analysis model based on the signal-to-clutter ratio. The radiation flux between the background and the target is calculated, and the infrared detection band selection is simulated. On this basis, the analysis and calculation of the infrared detection distance under different cloud conditions are carried out, and the similarities and differences between the signal-to-noise ratio model and the signal-to-clutter ratio model are compared, which can provide references for the design of infrared detection systems in practical applications.
In this paper, the thermal resistance radiant heat flow sensor and the automatic balance thin film radiant heat flow sensor are calibrated according to the small-scale heat flow in the cold vacuum environment, and the stability time is analyzed, the calibration data is linearly fitted, and then the calibration process is analyzed. The errors that may occur in the It provides a method basis for the engineering use of the heat flow meter in a similar environment.
Aiming at complex military application scenarios, this paper proposes a vision and lidar fusion scheme, and designs an algorithm for real-time construction of local scenes and real-time local path planning. It satisfies that the vehicle can avoid ground obstacles and aerial obstacles in real time under the state of no navigation and no map, and realize autonomous navigation. Experiments have verified that the algorithm has high execution efficiency and can meet the application requirements of autonomous driving.
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