A detection algorithm for small moving targets is proposed. The new algorithm firstly utilizes convolution filtering for
noise smoothing, and then a proposed preprocessing method based on the norm of the difference vectors of the processed
images sequence is applied to remove most of low-frequency background. Furthermore, optic flow technique is adopted
to segment the doubtful small moving targets from the subimage remained by preprocessing. Finally, the statistic
information for each of doubtful small moving targets is calculated. From the statistical feature, a determining criterion is
established to determine whether each of the doubtful small moving targets is a true target or not. Because the
preprocessing approach can get rid of most of the low-frequency background effectively, the calculation quantity of the
sequential processing by optic flow is decreased largely. The experiments in a designed test system prove that the
proposed detection algorithm can detect small moving targets in 30fps, 512x512 pixels, staring images sequence with
SNR no less than 3dB, and the correct detecting probability is up to 96%, which can satisfy the real time processing
requirements in practice.
This paper introduces the principle of Shafting correction In heavy mechanical manufacturing industry, shipping industry and Nuclear industry, analyzes the effect of distribution of laser light beam spot energy to PSD measure precision. With experiment, we analyze the relation between the different distribution of laser light beam spot energy and PSD measure precision, discuss the method to compensate of shafting correction error caused by the distribution of laser light beam spot energy.
The precise of artillery duplicate-aim is the important tactics index. At present many countries are making great efforts to improve the firing rate of large artillery, and the leading index of artillery in high firing rate is duplicate-aim precision. So the measure of duplicate-aim precision of artillery and evaluation of reliability are very crucial. The paper proposes a Theodolite front across-assembling method with cooperative object by which the precise of artillery duplicate-aim is non-touch detected. According to the precise demand of artillery duplicate-aim, the optimal disposition theory of theodolite front across-assembling is presented to assure high system precise. It proves that the method function with simpleness and high detecting precise and better flexibility and acclimation.