Sea peak simulation method based on sea peak space-time varying characteristics
A technology with time-varying characteristics and simulation methods, which is applied in the field of radar and radar sea clutter, can solve the problems that the sea peak amplitude and phase velocity change with time and space position, and cannot be close to the sea peak.
Pending Publication Date: 2021-07-16
XIDIAN UNIV
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[0005] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art, and propose a sea spike simulation method based on the space-time variation characteristics of the sea spike, which is used to solve the problem that the amplitude and phase velocity of the sea spike cannot be reflected in the sea spike simulation method in the prior art The characteristics change with the change of time and space position, so it cannot be close to the problem of real sea peaks
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[0034] The present invention will be further described below with reference to the accompanying drawings.
[0035] Refer to the attachment figure 1 Further, the implementation steps of the present invention are further described.
[0036] Step 1, set the initial spatial position of the initial sea peak.
[0037] The pulse time-distance of the pulse time-distance from the extraction of the high-resolution radar echoes and the distance unit dimension as the parameters of the Poisson distribution function, and the pulse time with high-resolution radar echo is the same. The number of rows of non-zero elements in the matrix and the number of columns represent the pulse time of the pulse time of the high-resolution radar echo, the initial position of the pulse time of the corresponding position of the corresponding position of the high-resolution radar echo, respectively. 0 Initial location R with distance unit R 0 .
[0038] In addition to the single pulse time of each initial sea spik...
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The invention discloses a sea peak simulation method based on sea peak space-time variation characteristics. The problem that in the prior art, a sea peak simulation method cannot reflect the characteristics that the amplitude and the phase speed of a sea peak change along with time and space position changes is solved. The method comprises the following steps: (1) setting an initial spatial position of an initial sea peak; (2) carrying out amplitude modulation on the initial sea peak in a pulse time dimension; (3) carrying out amplitude modulation on the sea peak after pulse dimension amplitude modulation in a distance dimension; (4) setting the phase velocity of each pulse occupied by the sea peak after distance dimension amplitude modulation; (5) generating a sea peak with a space-time varying characteristic; and (6) traversing all the initial sea peaks to obtain all the sea peaks with space-time varying characteristics. Compared with the existing sea peak simulation method, the sea peak simulation method can better reflect the change characteristics of the sea peak in the time dimension and the space dimension.
Description
Technical field [0001] The present invention belongs to the field of radar technology, and further relates to a margin simulation method based on margin hourly time-varying characteristics in the field of radar margin. The present invention can be used to simulate the margin peaks in high-resolution sea throwows, as well as the performance of small target detectors in the background of sea clutter. Background technique [0002] When the sea surface radar works in high-resolution, in the horizontal mode, the marine peak and target echoes are similar in power, duration, etc. during a scan cycle, which is likely to form a false alarm. In order to ensure the detection probability of the audience, and the probability of detection of critical observable targets, the research of marina simulation methods is of great significance. At present, the simulation method of the sea peak is mainly based on the statistical characteristics and characteristic indicators of the sea peak. Although it...
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Login to View More IPC IPC(8): G01S7/41
CPCG01S7/414
Inventor 水鹏朗田文琦梁祥施赛楠
Owner XIDIAN UNIV