Target indication radar system capable of adaptively selecting waveform according to target distance

Abstract

The invention discloses a target indication radar system capable of adaptively selecting the waveform according to a target distance, which comprises an antenna feedback subsystem, a receiver, a signal processing subsystem, a terminal subsystem, a monitoring subsystem, a time sequence controller and a transmitter, wherein the terminal subsystem sends a key target distance to the monitoring subsystem; the monitoring subsystem divides the target distance into three distance areas, adaptively judges which distance area the key target is located according to the important target distance, and acquires an optimal time sequence code; the time sequence controller generates transmitting signals x(t); the transmitter carries out amplification and filtering on the transmitting signals x(t) and generates transmitting radio frequency signals; the antenna feedback subsystem sends the transmitting radio frequency signals and receives echo radio frequency signals; and the receiver carries out frequency mixing processing on the echo radio frequency signals so as to acquire base band orthogonal two-way signals, the base band orthogonal two-way signals are sent to the signal processing subsystem for beam forming and pulse compression, and the distance, the height, the elevation and the azimuth deviation of the key target are sent to the terminal subsystem after the key target is recognized.

Description

technical field [0001] The invention belongs to the technical field of radar system launch control, in particular to a target indicating radar system for adaptively selecting waveforms according to target distance, which is suitable for practical engineering applications. Background technique [0002] For a long time, radar performance is closely related to pulse repetition period and transmission pulse width in waveform parameters. The selection and change of pulse repetition period and transmission pulse width (transmission pulse width) directly affect the realization of radar functions such as clutter suppression and signal detection. . In the traditional sense, radars generally have fixed timing, whether in search mode or tracking mode, that is, in the case of the same working mode and the same wave position, the pulse repetition period used is fixed. This type of radar is because of engineering realization Simple, easy for operators to operate and analyze, and widely u...

AI Technical Summary

Problems solved by technology

However, in the actual environment, targets and clutter at different distances from the radar often have different properties. Using a fixed repetition frequency to search or track targets will make the clutter suppression performance in some areas not good enough; Less energy needs to be emitted during tracking, and if a wide pulse signal is used, energy will be wasted

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