Linearity controllable chirp signal generating method

The invention relates to a linearity controllable chirp signal generating method. A chirp signal is generated in a digital matching mode, the linearity can be accurately foreknown, high design consistency is achieved, the anti-jamming capability to the external environment is high, the linearity of the generated chirp signal can be modified and finely adjusted through phase control coding, and compared with the DAC technology, very good engineering realization capacity is achieved in the aspects of data storing and reading. Compared with a simulation mode for generating a chirp signal, the linearity controllable chirp signal generating method has the advantages of being flexible, accurate, convenient and wide in application range. The linearity controllable chirp signal generating method can be suitable for various occasions with the requirement for high linearity chirp signals well. Especially, the linearity modifying function is achieved, and the linearity controllable chirp signal generating method can be applied more reliably and conveniently, and has the advantages superior to the simulation mode.