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The principle of Multiple Quadrature Waveform Synthesis (MQWS) is introduced, which is based on the theory of quadrature modulation. Its adaptability to pulse signals is analyzed. Combined with pre-saved waveform data, this method can be used in radar signal environment simulation and it can simplify the requirement for the hardware implementation with general-purpose and flexibility characters. The realization experiments show that it can fulfill the signal's simulation of various radar types. Keywords-radar environmen signal; MQWS; simulation;Pulse Descriptive WordI.