Method for generating digital combined pulse signals with continuous phase positions

Abstract

The invention belongs to the field of phased array radar resource scheduling, and relates to a sliding window resource scheduling technology based on sectors, in particular to a method for generating digital combined pulse signals with continuous phase positions. The technology is mainly suitable for resource management and distribution of a two-dimensional rotary phased array radar. A radar system carries out resource distribution on multiple functions and multiple tasks according to the sectors, and the residence time of various tasks is adjusted in the sectors in a self-adaptive mode according to loads of the tasks. According to the sliding window resource scheduling technology, when resource distribution is carried out on a current scheduling interval, the task load condition of one sector starting from the current scheduling interval is considered, the task load of one sector starting from the next interval is considered when the next scheduling interval is carried out, and sliding window type resource scheduling is formed. The residence time distribution ratio of the various tasks is determined according to the different work modes of the radar, the detection range, the search data rate, the fine batch number, the determination batch number and the like of the radar are adjusted in a self-adaptive mode according to the time obtaining the tasks, the multiple functions and the multiple tasks are achieved at the same time, and the flexibility and operational effectiveness of the two-dimensional rotary phased array radar are improved.

Description

technical field [0001] The invention belongs to the radar signal generating technology, adopts the inter-pulse sinusoidal signal compensation method, ensures multi-pulse signals, inter-pulse phase continuity, and stable amplitude, and realizes the generation of digital combined pulse signals with continuous phases. Background technique [0002] Solid-state transmitters have wide frequency bands and large duty cycles, and are widely used in radar systems. In the radar of conventional pulse compression system, the solid-state transmitter works as follows: receiving a pulse excitation signal and triggering a power output. Due to multi-stage amplification, the solid-state transmitter has a certain delay from triggering to stable power output, and the delay can be as long as more than 1us. During this delay, the output signal power rises slowly and cannot be used as a normal radar signal. [0003] The radar signal generation works in the multi-pulse combination excitation mode, ...

AI Technical Summary

Problems solved by technology

Multi-pulse signal, each pulse starts from zero phase, and the phase between pulses is discontinuous, that is, there are high-frequency components between pulses; the high-frequency components are outside the passband of the filter and are filtered out by the filter, which is expressed in the time domain It is the amplitude notch between pulses; the signal is amplified by the back-end amplifier to further expand the depth of the amplitude notch; when the notch level is lower than the working threshold of the solid-state transmitter, the transmitter regards it as two triggers, due to the power of the solid-state transmitter There is a rising edge factor in the output, and part of the valid signal of the second trigger will be lost

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