Zhao Qi

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We present an improved mobile Ad Hoc Network on-demand routing protocol which based on AODV by controlling the broadcasting of RREQ information. This protocol analysis the lifetime of node when implementing routing discovery, and avoiding the unnecessary information sending efficiently. By compare AODV with IAODV in the same scenario, the new protocol is(More)
The Star Sensor can be used to assist the inertial navigation system (INS) for navigation and positioning, restraining the accumulated error caused by the inertial components. During the integrated navigation process, the Star Sensor is installed above the INS, generated installation errors between the INS body coordinate system and the Star Sensor body(More)
  • Zhao Qi, Ma Li
  • 2013
This document mainly describes how to design and implement a telemetry and telecontrol systems which is apply for satellite on ground test. Telemetry and telecontrol systems front-end software is part of a satellite's ground test system, running on a host computer, which is mainly used to complete the unified control and management of the telemetry and(More)
In order to reduce the influence on horizontal misalignment, which is caused by external velocity error under the external damping mode in Strapdown Inertial Navigation System (SINS for short), the technology of dual-system parallel processing is presented in the SINS calculation. Solution system 1 is the same as traditional solution model, in which log(More)
This paper presents a design of a a high-precision shaft angle acquisition system used in the solar panel by the implementation of absolute round induetosyn as angle sensor, the Direct Digital Synthesizer (DDS) and resolver to digital converter (RDC), and the AVR micro controller which is used as the central processor. This paper also introduces the(More)
The fault diagnosis model of steam turbine based on Bayesian network is direct impacts on the complexity of the diagnostic process, so the construction of Bayesian network model is the primary problem. According actual fault diagnosis system of steam turbine containing redundancy and uncertain information, proposed attribute reduction method to fault(More)
The development of modern transmission has leaded to transmission gears scuffing becoming more serious. The finite element method (FEM) is proposed that can be used as the most economical and effective designing method to predict the gears temperature, determining whether the tooth scuffing or not, and analysis the thermal stress and the deformation of(More)
This paper mainly introduced a FPGA-based design model for low-bit Remote Subcarrier. This demodulation method is designed to accomplish carrier synchronization and bit synchronization quickly and effectively. It can achieve synchronization in FPGA which refer to the theory of software wireless. We should validate the arithmetic whether can satisfy the need(More)