Multi-band adaptive telemetry signal demodulation method
A multi-band adaptive telemetry signal demodulation method comprises the steps that a direct up-conversion transmitting circuit is adopted to modulate a signal to be transmitted to intermediate frequency, a baseband signal and a local oscillator signal are subjected to frequency mixing and are trans...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | A multi-band adaptive telemetry signal demodulation method comprises the steps that a direct up-conversion transmitting circuit is adopted to modulate a signal to be transmitted to intermediate frequency, a baseband signal and a local oscillator signal are subjected to frequency mixing and are transmitted by a transmitting antenna in a carrier form, a receiving circuit receives an echo signal through a receiving antenna and demodulates the echo signal, and the received echo signal is transmitted to the receiving antenna, a signal coding information is extracted; different frequency modulation is carried out according to different sent signals or echo signals, the relation degree coefficient Ck of the kth frame image and the (k-1) th frame image is calculated from the second video frame image, and the transmitting antenna and the receiving antenna are telescopic adjusting antennas. The invention solves the problems that the existing telemetry signal transmission efficiency is lower, the transmission of more re |
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