Aiming at the problem that the present radar reconnaissance receiver is hard to take into account both wide instantaneous bandwidth and high sensitivity, the acoustooptic channelized receiver technology has been deeply studied in this work. By making full use of the wide bandwidth, high speed and parallel processing technology advantages of acoustooptic modulation and spatial Fourier transformation and combining the multistage adaptive integral photoelectric conversion technology, the proposed acoustooptic channelized receiver can realize the efficient target signal intercept under complicated electromagnetic environments. The experimental results indicate that the acoustooptic channelized receiver system has the features of wide capture range, strong adaptive capacity, high detection sensitivity and can effectively separate the signals at the same time arrived. After the prototype test, when the system works instantaneous bandwidth is 1 GHz,signal detection sensitivity can be as high as more than -95 dBm. It is of high value in the practice of electronic reconnaissance field.