In this study, a wireless inertial sensor system was designed for application in human motion capture. A human body node displacement and attitude data decoding strategy is proposed based on the gait analysis method, synthesizing the advantages of the complementary filter and Kalman filter methods. A...

For the development of the direction and scale of aquaculture, the requirements for aquaculture technology and the environment are constantly increasing. In the process of aquaculture, the high requirements of parameters such as dissolved oxygen content and PH value of water quality make water quality...

In an ultra-high-frequency (UHF) radio frequency identification (RFID) system, direct separation for tag collision on a physical layer can improve the efficiency of the tag identification. Many coding methods can be adopted in the RFID system. Different codes have different link frequencies and have...

With the continuous development of China's Beidou navigation and positioning system (BDS), Beidou wide-area real-time precise positioning system is an important part of Beidou system, meeting the needs of the high-precision location service in various industries of the national economy. Based on the...

With OneWeb, Starlink and other LEO satellite systems being well known, commercial space industry has become a focus of worldwide attention and a key word in the development of China's space industry in recent years. Due to the loose technical threshold and easy networking, remote sensing satellites...

Microstrip antennas have become the key of recent research and they are commonly used in wireless communications because of its mini size, low profile. This paper uses HFSS software to design a dual band circularly polarized microstrip antenna for navigation system which based on circular polarization...

Objective quality assessment methods have been used widely for evaluation of audio systems. This article introduces a new method to show the relationship between the input parameters and the prediction targets of the multivariate adaptive regression splines (MARS) model. In this proposed method, the...

A dual-band reconfigurable low noise amplifier(LNA) for T/R module is designed based on SMIC 65nm CMOS process In this paper, the low noise amplifier can operate in L/S band optionally. The simulation results shown it has a larger than 20dB gain and smaller than 2.5dB noise figure for both L and S bands,...

An ultra-wideband low noise amplifier(LNA) based on the cascode configuration with resistive feedback is presented in this paper. A shunt-shunt feedback resistor and a pre-π matching network is employed to achieve wideband input impedance matching, and to enhance gain response and reduce noise for using...

In order to improve the efficiency of detecting mass hall sensors, this article describes a design of group testing system for mass hall sensors which can complete group testing of mass hall sensors’ quality one time. The content of group testing includes forward steps, reverse steps, Positive pull power...

On the basis of GPS data at stations of different climatic types in China, precipitable water vapor (PWV) products in year 2016 were obtained through precision data processing and water vapor inversion. On the basis of these products, the reliability of accuracy, annual variation, and diurnal variation...

Recently, UAV has been widely used in various fields. The attitude estimation of autonomous UAV is an important basis for its autonomous flight mission. The attitude estimation technique based on GNSS is a traditional positioning method. However, it is a challenge to provide a high precision estimation...

To manage the wireless positioning of pipeline robot, STM32 mobile positioning module is adopted to build a mobile positioning system to solve the quick troubleshooting and positioning of robot in the complicated pipeline. In this paper, it analyzes the influences of the node number variation and positioning...