The Torpedo Homing Array Source Studies

Torpedo self-guided array signal source is a multichannel, array signal sending signal source,which is the important part of torpedo self-guided system. From the research phase to the product, the torpedo self-guided system needs two important signal sources----signal source inside torpedo and self-guided system detecting signal source. They are similar in both hardware and software. As far as technic parameter is concerned, self-guided system detecting signal source is more difficult than signal source inside torpedo. Taking self-guided system detecting signal source for example, the paper has studied deeply the technology of torpedo self-guided array signal source, which includes:1. Signal synthesizing agrithm for torpedo self-guided array signal source is studied. The arithmetic formulas for sine wave, linear frequency modulation signal, V-style frequency modulation signal, white noise signal, reverberation signal and echo signal are given by their definition. Simultanously, according to the principle of beamforming, the arithmetic method of beamforming based on delay filter is presented.2. According to the design demand of torpedo self-guided array signal source, the overall hardware design is given. The design of VXI interface and the signal source module are discussed in detail, as well as the method of low-noise circuit design.3. According to the software demand of torpedo self-guided array signal source, the overall software design is given. After analyzing each part of software at length, the optimizing method of software is discussed.4. Lastly, each performance index of torpedo self-guided array signal source is tested by experiment and system error is analyzed.