Method for designing continuous phase-modulation signal of non-continuous spectrum

The invention relates to a method for designing a signal, specifically to a method for designing a continuous phase-modulation signal of a non-continuous spectrum, and aims to solve the problem in an existing waveform design method that details of each frequency point of each pass band and stop band are not considered, so sufficient matching with changeable interference environment cannot be realized in signal design and the problem that balance design of a proportion of a signal to interference ratio to a sidelobe index is not flexible enough in a design process. The method firstly directs at a signal design general objective function P=[lambda]xkx+(1-lambda)(2N-xb-bx), then utilizes a gradient iteration method to obtain a waveform optimal solution; then weight lambda is traversed from 1 to 0, a series of values of the signal to interference ratio and the sidelobe are obtained, one of the indexes are used as a horizontal axis, the other index is used as a longitudinal axis, and a curve that is obtained is a Pareto optimal curve; and the Pareto optimal curve is used as a tool for assisting selection an optimal balance between objective functions in multi-objective optimization to design the continuous phase-modulation signal of the non-continuous spectrum. The method provided by the invention is suitable for design of the continuous phase-modulation signal of the non-continuous spectrum.