A rotary dual-channel roll and pitch tracking scheme is proposed, and a dual-channel rotation control algorithm is designed to solve the problem of detector front and phase plane rotation, expand the field of view, and improve detection efficiency. The light and miniaturized platform design in space improves the control speed and accuracy. In the strong maneuvering state of the terminal target, the dual-channel infrared tracking reduces the amount of target misses and improves the performance of the control system to precisely hit the target. In this paper, the research results obtained are expounded from the two aspects of the rotary dual-channel system tracking principle and the rotary dual-channel tracking control method. Firstly, the design of the dual-channel rotation control algorithm is introduced; secondly, the dual-channel rotation tracking loop is designed; finally, the research results are verified by experiments, which illustrate the advantages of the rotation-based tracking in fast response, dual-channel interaction and precise guidance.
Based on spontaneous parametric downconversion process, we propose a novel self-calibration radiometer scheme which can self-calibrate the degradation of its own response and ultimately monitor the fluctuation of a target radiation. Monitor results were independent of its degradation and not linked to the primary standard detector scale. The principle and feasibility of the proposed scheme were verified by observing bromine–tungsten lamp. A relative standard deviation of 0.39 % was obtained for stable bromine–tungsten lamp. Results show that the proposed scheme is advanced of its principle. The proposed scheme could make a significant breakthrough in the self-calibration issue on the space platform.
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