Abstract: Formation-flying satellite radar is a new technique developed recently. It offers the potential for diversity gain and spatial resolution gain through transmitting the orthogonal waveforms. Combining the performance of LFM signal with the orthogonal code division technology, OCD-LFM (orthogonal code division linear frequency modulation) signals is proposed. Then, the cross-ambiguity and the range resolution on the performance of the designed signals are analyzed. Also, the relationship between the parameters that minimize the cross-correlation peaks and minimize the effect of Doppler frequency shift of the proposed signals is derived. Theoretical analysis and computer simulation results illustrate that the orthogonal performance of OCD-LFM signals gradually enhanced with the increase of phase code length N, while the proposed signal has better performance than the traditional hybrid waveform obtained by combining chirp waveform with binary pseudo-random sequences in range resolution and Doppler tolerance.