Based on the main trend and the technology characteristic that submarine weapon system has transform into weapon channel organization, some difficulties in submarine torpedo attack operation are analyzed witch is increased with the improving of anti-torpedo technology. In order to remedy the deficiency in torpedoes salvo operation by a single self-guided mode in counterattack state, the concept of Torpedo Multi-way Launch Control (or Torpedoes Salvo by Different Self-guided Mode) is put forward. Some critical correlative links are researched, some methods and models on international interference among torpedoes, calculation and input of torpedo launch parameter are established.

Taking defence against ship formation as background,this paper discusses the tactical reasons,technical conditions and possibility for developing long-range torpedo,and puts forward the concept of submarine group attacking and guidance way by using leading torpedo.Moreover,operational concept of realizing long-distance attack against ship formation and regarding torpedo as launching-platform or anterior detector is presented,and major technologic characters and functional requirements of the long-range torpedo are analyzed.

According to the demands of operation and the technological characteristics of wake-guided torpedo,and based on straight-running torpedoes savlo principle and the solving methods of relevant questions,it is pointed out that the critical link to avoid missing target in salvo of wake-guided torpedoes is to control the space among torpedoes to enter target's wake based on target geometric length and torpedo ballistic characteristics.Finally,a model is established to determine launch parameter of wake-guided torpedo in fan-shaped salvo and parallel salvo.It can increase not only hit probability of wake-guided torpedoes salvo,but also hit number by means of quantifying salvo torpedoes.