Phase synchronization method and equipment

Phase synchronization equipment, comprising:

• a signal transceiver, a processor and a memory,
• wherein the signal transceiver is arranged to receive and transmit a phase synchronization signal;
• the memory is arranged to store executable instructions;
• and
• the processor is arranged to execute the stored executable instructions to perform a phase synchronization method, the method comprises:
• determining pulse widths of first and second phase synchronization signals and starting time of transmission of the first and second phase synchronization signals, wherein the starting time is located between two successive moments when radar signals are transmitted;
• controlling a first spaceborne Synthetic Aperture Radar (SAR) to transmit the first phase synchronization signal to a second spaceborne SAR according to the pulse width and starting time of the first phase synchronization signal;
• controlling the second spaceborne SAR to transmit the second phase synchronization signal to the first spaceborne SAR according to the pulse width and starting time of the second phase synchronization signal;
• determining a compensation phase according to a peak phase of the second phase synchronization signal received by the first spaceborne SAR and a peak phase of the first phase synchronization signal received by the second spaceborne SAR;
• and
• performing phase synchronization compensation on the radar signals received by the first spaceborne SAR and the second spaceborne SAR according to the compensation phase.