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A fine alignment method suitable for marine strapdown inertial navigation system is proposed. In this method, DVL (Doppler velocity log) is applied to give velocity reference. System error equation is deduced to obtain fine alignment model. And the measurement equation corresponded to Doppler velocity log is given in this paper. Here in the measurement equation we consider the DVL speed measuring...
When acquiring analog signal in industrial process control, the ground loop current and noise should be effectively eliminated to show the authenticity of the signal acquired. This is particularly important when sampling very small voltages (mV) or currents (mA) DC signal. This paper explains the design of a DC isolating transmitter for small signal. The transmitter is practical and consists of DC...
A fine alignment method suitable for marine strapdown inertial navigation system is proposed. In this method, Doppler velocity log is applied to give velocity reference because of its accuracy and independence. System error equation is deduced to obtain fine alignment model. And the measurement equation corresponded to Doppler velocity log is given in this paper. In order to validate this method,...
Synaptogenesis is considered necessary for learning and memory. Recently, it has been suggested that progesterone (PROG) effects synaptogenesis of the cerebellar Purkinje cell, helps alleviate symptoms of multiple sclerosis and helps arrest spinal cord neurodegeneration. However, it is unclear whether PROG influences synaptic plasticity in central nervous system neurons after global cerebral ischemia...
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