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Abstract:In order to realize the rapid and high-precision monitoring of electromagnetic environment, the advanced e3238s instrument and corresponding hardware are used to design and develop the system software. A complete set of electromagnetic environment monitoring system is formed. The functions of electromagnetic signal sorting, identification, frequency measurement and direction finding are realized. The frequency range reaches 1GHz ~ 18GHz, the scanning speed is 10 GHz / s, the frequency measurement accuracy is better than 0.1 MHz, and the direction finding accuracy is better than 3 ° (r.m.s).The practical application results show that the system makes full use of the advantages of e3238s instrument and makes up for its shortcomings. It can realize the functions of electromagnetic signal high-speed search, analysis and acquisition, direction finding, long-time storage of measurement data, data playback and other functions, which meets the needs of electromagnetic environment monitoring.