The features of advanced GPS anti-jamming Technology were analysed,such as selfadaptive zero setting,frequency domain and time domain filtering of GPS receiving antenna, receiving codes(P and M),psendo satellite and combination of GPS and INS.
This paper mainly describes the software design for a new type of ultrasound power detecting system based on instrument, in which data acquisition module, digital filtering module, data conversion module, zero setting and adjustment module.
Aimed at matching the practical needs of measuring temperature in coal mines, the paper introduces the development of a new on-line temperature-measuring system, using temperature sensor DS18B20 and single chip-microcomputer AT89C51. The system, equipped with infrared adjusting technology, allows both an improvement in not only remote operation of zero setting and alarm value setting, but also the leakproofness and security.
Based on the characteristic Of GM(1,l) modelling, the paperPresents a new method Of zero setting modelling (labeled GM(1,1) method). Whell applied to grey fore￣ing, it can decrease obserVatioll data needed forestablishing a forecasting model of n-dimenSion non-negative seqience fromn to n-1, thus enaviing the Process of Sampling and GM(1,1) tranSformationto be optimized. This method is of practical value.