This PDF file contains the front matter associated with SPIE Proceedings Volume 12308, including the Title Page, Copyright information, Table of Contents and Conference Committee list.

In this paper, the marine situation plotting system combined with normal trajectory model is exploited by adopting object-oriented design method and dynamic link library technology. The system is implemented with heavy emphasis on simplicity and usability. The system has the functions of situation display, plotting and trajectory extraction. The trajectory shrinkage optimization method of normal trajectory model is used to optimize a large number of tracks. Then the DBSCAN algorithm is carried out to cluster the optimized data to get the normal trajectory model, which can contribute to the plotting function. The plotting function includes point plotting, line plotting, and surface plotting. Users can select the plotting operation on the floating panel. The system can adaptively select the corresponding ship icon according to the scale of chart. Color-coded situation displays are used for different types of ships, which improve the situational display and overall awareness. Additionally, users can operate the mouse on the situation map for ranging and area measurement. The experimental results show that the system has good operability and usability.

We propose a reconfigurable mode (de)multiplexer based on a thermo-optic asymmetric directional coupler for (de)multiplexing both LP₀₁-LP_11a modes and LP₀₁-LP_11b modes. Simulation results show that, for TE(TM) polarization, with a heating power of 35.8 mW, the coupling efficiency of LP₀₁-LP_11a is 99.56% (98.43%); with a heating power of 53.2 mW, the coupling efficiency of LP₀₁-LP_11b is 98.76% (89.59%).

In this paper, a microwave sensor using self-oscillating complementary split-ring resonator (SO-CSRR) for wrist pulse detection is proposed. The CSRR used in this article can generate a highly concentrated electric field, enough to detect the tiny distance variation between the CSRR and the wrist skin caused by the radial artery in the near field region. This distance variation will change the signal phase passing through the CSRR. By injecting the phase-modulated signal into the SO-CSRR, it generates an amplitude-varying signal carrying the wrist pulse information. The output signal of the SO-CSRR is then amplitude-demodulated by the radio frequency (RF) detector (DET). The measured results are highly consistent with the actual situation and prove that the method is feasible.

Superimpose functions are designed to double the peak intensity and narrow the peak width based on inherent symmetry of Fourier Transform (FT) peak shapes. A new strategy, stepwise superimpose derivative, is developed to implement the superimpose operation with FT spectroscopy and imaging. A stair-like configuration is specifically built with a conventional FT spectrum. A derivative of their multiplication results in a sharply resolved spectrum with respect to first-order derivative FT spectrum as spectral background. Application examples in infrared spectroscopy, nuclear magnetic resonance spectroscopy and magnetic resonance imaging are presented.

In order to establish the standard transfer chain traceable to the absolute cryogenic radiometer and improve the absolute calibration accuracy of spectral radiation for optical remote sensor, an optical radiometric calibration method based on broadband monochromator light source is proposed and the corresponding system is developed. In the system design, not only the high-efficiency monochromator lighting system, low aberration off-axis paraboloid reflection optical path, high precision mechanical adjustment device and positioning device are adopted, but also the light source water-cooling system is used to effectively improve the performance of the system. The results show that the system has the characteristics of broadband, high precision and good stability, which provides an effective and feasible technical means for realizing the standard transfer of detector with high-precision.

In order to realize the automatic calibration of fiber optic hydrophone with wide frequency, the principle of heterodyne method is studied in this paper. And combined with the standing wave field and free field calibration methods, a fiber optic hydrophone phase-shifted sensitivity calibration device is developed, which realizes the accurate calibration of the fiber optic hydrophone in the frequency range of 20 Hz to 50 kHz. The measurement uncertainty of the calibration device is 1.5 dB (k = 2).

In view of the complex operation of the laser axis detection system for a certain type of anti-tank missile, a portable laser axis detection system based on infrared CCD imaging technology is developed, which can realize the visualization of laser detection process and the automation of facula calculation, and the detection efficiency is about twice higher than that of the original detection engineering vehicle detection.

The accuracy of Laser Demarcation Instruments (LDIs) determines the efficiency and quality of subsequent measurements. After investigating the existing calibration method of LDIs, a new LDIs calibration device is designed in this paper based on image vision detection technology. The calibration method is convenient, high detection accuracy and high efficiency, and realizes digital calibration. This paper completes the overall design of the calibration system for LDIs, designs the mechanical structure of the image acquisition device and the working platform of the LDIs, and selects the relevant devices. The mechanical structure of the system is composed of an image acquisition device, a standard vertical line and a working platform for LDIs, which can calibrate the laser line width, horizontal tilt error of the laser line, and vertical tilt error of the laser line. Experiments were carried out, and the collected laser line images were processed by the computer to record and save the calibration results. The measurement uncertainty of the measurement results was evaluated.

This paper takes the tracing of series resonance point and the confirmation of Q point in physics experiment as an example to introduce the method of circuit connection based on the free trial version of Multisim12. The virtual oscilloscope is used to demonstrate the varieties of the voltage of signal source and the resistance when the signal source changes. We can get the series resonance frequency by comparing these two varieties. The virtual multi-meter is used to get the Q point of the series circuit. At the same time, this paper also uses the virtual multimeter to intuitively obtain the quality factor of the series circuit. This simulation is suitable for teaching as an experiment and studying in the spare time.

The most important condition for achieving laser gyro (LG) stable operation and high precision characteristics is to ensure the constancy of the laser resonator length, so that the ring laser generates on a single mode. Computer simulation of processes in the resonator length control system of the Zeeman LG allows predicting its operating time on a single mode with keeping high accuracy. In the paper, the method of computer simulation is considered, which enables instead of multi-hour long technological tests during production to conduct short tests and then use the obtained data to prognosticate further LG behavior by applying an approximating function. The algorithm for the computer implementation of this method and the results of experimental studies, which confirmed an excellent coincidence of the approximating function with the experimental dependence, are presented. With the application of the proposed method, a multiple reduction of the technological stage duration of LG production is achieved with getting the data for sorting LGs on their accuracy. This permits us to improve Zeeman LG production arrangement, matching it with the basic principles of lean production, such as eliminating useless procedures, reducing the duration of technological operations.

Based on the characteristics of LCOS, it was detailed that the simulation of LCOS aureole stability which building on the OpenGL. First, the problem of aureole and its stability were introduced in brief, and led to go into damping coefficient from here. Secondly the deduce of combined correction angle (including the synthetic pitch angle Σμ and the synthetic azimuth angle Συ) was introduced. Finally, the necessity of damping coefficient adding to LCOS was analyzed, and the target motion was dynamic simulated depending on OpenGL, meanwhile the aureole stability was ensured.

When using genetic algorithm to generate path coverage test cases, test cases are usually input into the instrumented program to obtain program path representation, and fitness values are calculated according to the path representation.This paper uses deep neural network to predict the fitness value of genetic algorithm. Firstly, a batch of test cases are generated by random method, then the fitness value of test cases is calculated, and the training set of neural network is obtained by combination. Then the trained neural network is used to predict the fitness value of the population in the process of evolution to reduce the running time of the population in the process of evolution and improve the efficiency