Fuzzy processing method of high-precision ranging radar based on modulation pulse sequence

Abstract

The invention relates to the field of communication. The embodiment of the invention discloses a fuzzy processing method of a high-precision ranging radar based on a modulation pulse sequence. The method comprises a resolution determining method of a frequency conversion probe sequence with variable impulse width, a fuzzy problem processing method in a radar impulse sequence, a multipath interference eliminating method in a ranging radar receiver, a non-fuzzy high-precision positioning process of an adjustable variable pulse sequence and a superheterodyne receiving system with high-precision fuzzy eliminating. Non-fuzzy high-precision positioning with long distance can be completed by adjusting the detecting sequence of radar signal and upgrading a signal processing software of the radar receiver according to the method of the invention, the signal processing software of the prior system is easy to be updated, the expansibility is better, and the cost is relatively low. The invention can solve the contradiction of fuzzy distance measured by the radar and target detection resolution, and provides the complete implementation process for measuring the adjustable variable pulse sequence at the same time.

Description

technical field [0001] The invention relates to the communication field, in particular to a fuzzy processing method for a high-precision ranging radar based on a modulated pulse sequence. Background technique [0002] Radar is a radio device that uses radio waves to determine the position of objects. Electromagnetic waves are the same as sound waves. According to the echo signals of obstacles encountered, the radar receiver determines the size and movement characteristics of the target, and uses the electromagnetic wave reflection characteristics to achieve distance. Target measurement, etc. The shorter the working wavelength of the electromagnetic wave, the more obvious its particle nature, the better the linearity of propagation, and the stronger the reflection performance. Conversely, the longer the working wavelength of the radar, the more obvious its fluctuation and the more obvious the diffraction effect. Usually, radar uses radio waves in the microwave band. In rece...

AI Technical Summary

Problems solved by technology

However, the step-by-step frequency modulation measurement method will produce a fuzzy distance within a certain range, and the size of the distance is related to the specific frequency modulation step size

Moreover, the modulation distance will also affect the resolution of target positioning, and the two form a pair of contradictions, similar to the principle of uncertainty

Due to ambiguity, this method cannot get better positioning accuracy

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