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In the actual GNSS space signal quality monitoring system, the performance of the channel is not ideal, resulting in the signal transmitted to the receiver is inconsistent with the signal received by the antenna. Studying the characteristics and designing the equalization algorithm of the channel could restore the received signal to the real state, which will ensure the quality monitoring results...
The existence of non-line-of-sight (NLOS) errors will considerably degrade the localization accuracy. Therefore, the NLOS node localization is investigated. In this article, we propose a NLOS node localization algorithm that utilizes the firefly algorithm. The objective function is established by the probability of propagation of NLOS and LOS according to the approximate maximum likelihood method...
The thickness of the boundary layer of the discrete-time Tracking-Differentiator is variable, so that the control characteristic line is asymmetric. In general, the nonlinear boundary transform is used to get the control synthesis function. However, it contains square root operations, and the compute is more complex. This study is conducted to put forward a new algorithm to simplify partition boundary...
Aircraft infrared radiation characteristic is the important basis of penetration performance evaluation. When we use ground-based infrared radiation measurement system test aircraft in the out-field, goals are often in the clouds, the clouds of infrared radiation absorption and scattering makes the transmittance and background luminance change, which aifect measurement accuracy. Radiative transfer...
The current animal sperm morphology analysis is mostly achieved through computer vision technology. By using image processing technique, the parameters of each sperm such as ellipticity, elongation of the head, mid-piece angle and percentage of acrosome can be calculated, then the quality of sperm can be evaluated. This system uses K-means algorithim to segment the sperm images, thinning algorithm...
Generally speaking, basic real-time measurements collected from different control centers have a time delay due to the transmission delay and data exchanges in the energy management system (EMS). Measurement errors resulting from both the raw measurement noise and time delay have undesirable effect on power system dynamic state estimation (DSE). In order to reduce measurement errors, accurate measurement...
This paper proposes a novel estimation method using finite impulse response (FIR) filter for the vehicle roll and bank angles. A vehicle model was constructed using the bicycle model and roll motion model and has parameter uncertainties. The proposed method ensures robust to vehicle parameter uncertainties and has no risk of divergence. Furthermore, the proposed method does not need to use expensive...
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