Aiming at the status that it is easier for secure chip to be attacked by error inject attack,this paper proposes a protection scheme of error inject attack for secure chip.

It is an important principle in missile attack to get the priority by detecting and attacking before enemy.

The pure bearing method by use of single submarine locating target position,and the missile attack based on passive sonar conduction are discussed.

Aiming at combat application characteristics of submarine,we researched locating enemy s position via "trigonometry" and offered target designation for effectiveness for our formation of ships in missile attack.

Considering the guide method of a UAV when it takes an attacking mission,there should be an attack navigation at the beginning stage of the attack mission,the key point of this stage includes three parts,to acquire the navigation intelligence,to make the navigation strategy,and according to a reasonable navigation strategy to select the appropriate navigation law.

The principle of fire control system of multi target attack is introduced and a fast simulation algorithm is used in the calculation and simulation of missile attack region.