With the continuous development of infrared technology and its extensive usage in military, radiation attitude measurement is attracting more attention. Aiming at compensation requirement for complex background interference during rotating missile measurement, theoretical research on dual-band carried out. The mechanism characteristics earth are analyzed according to flying movement characteristics. atmosphere propagation 3~5-μm 8~14-μm bands studied, model established. Then, influence cloud...

The microtremor survey method (MSM) holds great potential for obtaining subsurface shear wave velocity structures in exploration geophysics. However, the lack of an instant imaging mechanism with local fast computation and processing has become a significant bottleneck hindering development MSM. In tasks, computational resources ordinary nodes employed are often limited. this paper, we consider single-point array network time-varying wireless channels stochastic task data arrivals sequential...

As this study examined the issue of surface acoustic wave (SAW) torque sensor which interfered in high rotational speed, gyroscopic effect generated by rotation was analyzed. Firstly, SAW coupled equations contained and loads were deduced, calculation error caused solved. Following this, hardware testing platform turntable experiment designed to verify correctness theoretical calculation. Finally, according experimental data, compensated multivariate polynomial fitting (MPF), Gaussian...

Abstract In view of the problems that current attitude measurement method rotating projectile based on three-axis infrared needs to normalize sensor according surrounding environment in advance, resulting troublesome application and insufficient environmental adaptability, an adaptive normalization for four-axis is proposed. Based mathematical relationship between sensors, algorithm output amplitude offset sensors designed, which can realize at any time. By building semi-physical experiment...

The reliability of the attitude information is critical for precise control flying projectiles, which can be impacted by interference in dual-band infrared data. Though various compensation methods exist, primary challenge lies accurately and timely detecting type based on given dataset. However, one-dimensional dataset such scenarios are commonly redundant difficult to handle efficiently. Hence, lightweight algorithms data processing required. In this paper, an detection framework proposed...

Abstract This paper presents a wireless clamp-on torque sensor based on dual or quad one-port SAW resonators to meet the measurement requirements of transmission system. Firstly, principle is introduced, mechanical model structure calculated and simulated by theoretical analysis COMSOL. The differential method confirmed, optimal parameters are studied. Then, sensitive theory devices analyzed, sensing elements system designed frequency division multiple access (FDMA). And novel element...

Abstract Aiming at the problem that triaxial geomagnetic attitude measurement model can not directly figure out complete information of rotating missile or current calculation by limit ratio and integral method needs calibration curves look-up table method, after establishing missile-borne infrared respectively, a biaxial composite is proposed. By model, pitch angle roll be calculated. Combined with heading worked finally. Through error transfer theory analysis, direct realized alternating...

Abstract Unmanned aerial vehicle (UAV), is an unmanned aircraft operated by radio remote control equipment and self-contained program device. When Aerial Vehicle on mission, its location information needs to be acquired navigate it. Based the research background of navigation measurement, a passive integrated mode Inertial / Altimeter Infrared Geomagnetism Navigation method designed in this paper. Firstly, several methods for navigation, including geomagnetic infrared inertial altimeter are...

Abstract In order to satisfy the requirements of TDLAS gas measurement, DFB laser drive and temperature control system is designed with taking STM32F103RCT6 as main chip, including sine wave sawtooth signal generation circuit, acquisition circuit etc. The are respectively generated by using DDS chip STM32 on-chip DAC, two superimposed constant current source laser. At same time, internal collected controlled. a center wavelength 1653.7 nm used verify CH4. experiment proves that can generate...

rGO is widely used in aerospace, petrochemical, marine and other fields because of its high conductivity, thermal specific surface area, light transmittance excellent mechanical properties. At the same time, due to good hydrophobicity, it not only easier synthesize superhydrophobic materials, but also improve stability electrothermal properties composites, prolong service life ensure effect. In this paper, a modified Hummer method was constructed prepare reduced graphene oxide (rGO)...