Unlock instant, AI-driven research and patent intelligence for your innovation.

A Non-Uniform Quantization and Sorting Method of Sequence Differences of Pri Jitter Signals

A jitter signal, non-uniform technology, applied in the field of electronic reconnaissance, can solve the problems of divergence of histogram statistical results, inability to count potential PRI values, failure of sorting methods, etc., to achieve the effect of effective extraction

Active Publication Date: 2020-07-14
SHANDONG INST OF AEROSPACE ELECTRONICS TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] These conventional main sorting algorithms can achieve better results for pulse sequences with a small amount of jitter, and pulse sequences with a large amount of jitter will cause the statistical results of the histogram to diverge, and the potential PRI value cannot be calculated, resulting in the failure of the sorting method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Non-Uniform Quantization and Sorting Method of Sequence Differences of Pri Jitter Signals
  • A Non-Uniform Quantization and Sorting Method of Sequence Differences of Pri Jitter Signals
  • A Non-Uniform Quantization and Sorting Method of Sequence Differences of Pri Jitter Signals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0034] This embodiment provides a method for non-uniform quantization and sorting of PRI jitter signal sequence differences. The method is for sorting PRI jitter signals at pulse repetition intervals. The specific process of the method is as follows: figure 1 shown, including the following steps:

[0035] S1, put [(1-α)T PRI , (1+α)T PRI ]

[0036] All TOA difference results of time-of-arrival TOA sequences in the range are quantized as T using non-uniform quantization PRI Adjacent integer value, obtain the quantized TOA difference result; where T pri The PRI value recorded as the PRI jitter signal, and the jitter amount is α.

[0037] Among them, for the PRI jitter signal, the PRI jitter signal is obtained in [(1-α)T PRI , (1+α)T PRI ] pulse sequence within the time range, in this embodiment, the pulse arrival time sequence is TOA sequence differen...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a PRI dithering signal sequence difference non-uniform quantization sorting method, which can carry out non-uniform quantization on a pulse sequence time of arrival (TOA) difference result, enable a statistical result to be focused and complete extraction of a hidden PRI value. The method carries out sorting in view of the PRI dithering signals and comprises the following steps: the PRI dithering signal has a PRI value of Tpri and a dithering amount of alpha; TOA sequence difference results in a range of (1-alpha)TPRI to (1+alpha)TPRI are quantized to integer values near the TPRI, and a quantized TOA difference result is acquired; the quantized TOA difference result is subjected to histogram statistics, and a value exceeding a preset threshold Tthreshold in the histogram is taken as a hidden PRI value. The hidden PRI value is determined to be a real PRI value through sequence retrieval, a pulse sequence corresponding to the real PRI value is extracted from the PRI dithering signal, and sorting of the PRI dithering signal sequence is realized.

Description

technical field [0001] The invention belongs to the field of electronic reconnaissance, and in particular relates to a method for non-uniform quantization and sorting of PRI jitter signal sequence differences. Background technique [0002] The electronic reconnaissance system is faced with complex random overlapping dense pulse streams generated by multiple radar radiation sources. To realize the characteristic analysis of each radar radiation source, the pulse sequence of each radiation source must be sorted first, that is, the signal sorting is completed. Signal sorting generally includes two processing processes: pre-sorting and main sorting. Pre-sorting uses parameters such as signal arrival direction, carrier frequency, and pulse width to classify and divide into multiple pre-sorting results; The sorting results are processed by inter-pulse correlation, mainly for PRI sorting, and the pulse sequence is extracted by using the characteristics of PRI. Conventional PRI mai...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/35G01S7/36G01S7/40
CPCG01S7/354G01S7/36G01S7/4004
Inventor 李民张长帅贺瑞于建明王金伟王帅
Owner SHANDONG INST OF AEROSPACE ELECTRONICS TECH