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Pulse repetition period estimation method for staggered radar under high pulse loss

A radar pulse and repetition cycle technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of radar signal staggered number and sub-period estimation, low pulse loss rate, and unsolved operator sub-period sequence relationship, etc.

Active Publication Date: 2022-05-13
YANGZHOU UNIV
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Problems solved by technology

Although the above-mentioned staggered signal sorting methods have been beneficially discussed in threshold design and staggered radar frame period estimation, etc., they have not estimated the number of staggered radar signals and sub-periods, nor have they calculated order relationship, and often require a lower pulse loss rate

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  • Pulse repetition period estimation method for staggered radar under high pulse loss
  • Pulse repetition period estimation method for staggered radar under high pulse loss
  • Pulse repetition period estimation method for staggered radar under high pulse loss

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Embodiment 1

[0065] Such as figure 1 shown. Assume that the staggered pulse sequence has 8 sub-periods, which are 195, 50, 170, 128, 85, 96, 77, and 116 respectively, and the frame period is 917, and 10 groups are sent, so the total number of sent pulses is 80. figure 2 The PRI value corresponding to each pulse in the staggered pulse sequence is given when no pulse is lost, image 3 The PRI value corresponding to each pulse in the received pulse sequence is given when there is a 40% pulse loss rate, Figure 4 It is the PRI value of the actual effective pulse after corresponding the received pulse to the actual sent pulse number. In this embodiment, the specific steps of the staggered radar pulse repetition period estimation method under high pulse loss are:

[0066] Step 1. Estimating the frame period of the staggered radar, and constructing a matrix I with the stop pulse number, the start pulse number and the number of pulses corresponding to the frame period;

[0067] Step 1-1. Calc...

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Abstract

The present invention proposes a method for estimating the pulse repetition period of the staggered radar under the condition of high pulse loss. Construct matrix I; According to the 3 × l-dimensional matrix I obtained in step 1 and the estimated staggered radar frame period, estimate the staggered number of staggered radar signals and the PRI value of each sub-period; solve the order relationship between sub-periods to obtain cycle order. The invention can not only correctly estimate the frame period, the number of staggers and each sub-period of the staggered radar, but also solve the sequence relationship among the sub-periods.

Description

technical field [0001] The invention belongs to the technical field of electronic countermeasures, and in particular relates to a method for estimating the pulse repetition period of a staggered radar under high pulse loss. Background technique [0002] Staggered radar is a common pulse radar, which can solve the blind speed problem of pulse radar because it has multiple different pulse repetition intervals (Pulse Repetition Interval, PRI) or pulse repetition frequency (Pulse Repetition Frequency, PRF). The radar signal sorting is an important part of the electronic countermeasure system. Its function and role are to process the radar signal pulse sequence intercepted by the receiver and separate the pulse sequences belonging to different radars. At present, the commonly used repetition frequency sorting algorithm is mainly aimed at radar signals with a fixed single PRI, that is, conventional radar signals, or dithering radar signals. The classic algorithms include cumulativ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/28
CPCG01S7/28
Inventor 姚志均陈舒涵高锐
Owner YANGZHOU UNIV