The beacon fuze is based on the radio order fuze. It is a new concept fuze that controls the exploding height of submunition using the RF digital communication and omputer control technology. According to the need of the soft killing submunition, the beacon bullet as the measuring basic station can be orientated with the measurement of oblique distance. A mathematic model of the accurate orientation of exploding height is set up. A practical method of measuring height is proposed and its orientation error is computed