Phase pulse-type laser range finding method
A laser ranging and pulsed technology, applied in the field of phase pulsed laser ranging, can solve the problems of short measuring range, poor anti-interference ability, increased measurement time and cost, and achieve low cost, strong anti-interference ability, and measurement fast effect
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[0083] In order to obtain the first phase difference of various frequency components in the first transmit pulse signal whose frequency F1 is 7.5 MHz, the following steps are adopted:
[0084] (1), such as figure 1 As shown, the first transmit pulse signal with a duty cycle of 5% and the frequency F1 of 7.5MHz and the first local oscillator pulse signal of (F1-1KHz)=7.499MHz are obtained through frequency mixing, low-pass filtering, and amplification in sequence The first reference signal; the first echo pulse signal with a frequency F1 of 7.5MHz and the first local oscillator pulse signal of (F1-1KHz)=7.499MHz are sequentially processed through frequency mixing, low-pass filtering, and amplification to obtain the first echo signal;
[0085] (2), such as figure 2 As shown, the first reference signal is sent to the controller, and the controller performs analog-to-digital conversion processing on the first reference signal and realizes phase detection with the 1KHz local sin...
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