A processing system and method for circuit pulse signals applied to low-altitude detection radar

Abstract

The invention discloses a circuit pulse signal processing system applied to a low-altitude detection radar, comprising: a data acquisition module, which is used for acquiring target echo data detected by the low-altitude detection radar in real time, and sending the target echo data to a data analysis module; updating the position of the detection radar that obtains the target echo data in a three-dimensional model in real time, and planning the flight route of the detection radar according to a flight safety tag; selecting a target adjustment image with the same basic parameters as the target object in the real-time detection process, that is, if the reflected radio wave waveform, the reflected cross section and the amplitude speed are the same, it means that the detected object is the same target object; and performing three-dimensional supplementary update on the target stereo image; and completing the detection pulse signal processing with a shorter detection path while ensuring the complete detection of the target object.

Description

Technical Field

[0001] The present invention relates to the technical field, and in particular to a processing system and method for circuit pulse signals applied to low-altitude detection radar. Background Art

[0002] Low-altitude radar uses radio waves to detect the position of objects below the horizon, obtains the target's distance information by measuring the round-trip time delay of pulse radio waves, measures the target's radial velocity based on the Doppler frequency in the received pulse carrier, and uses the equal signal method to obtain the target's azimuth and pitch angle data.

[0003] However, in order to obtain the data of all target points on the target object and use this data for imaging processing to obtain an accurate three-dimensional stereo image, it is necessary to reasonably plan the flight detection route; and then how to objectively detect the spatial position, structure, form, dynamic and static state of the target object, and complete the detection pulse signal processing with a shorter detection path while ensuring the complete detection of the target object, is an urgent problem to be solved; for this reason, we propose a circuit pulse signal processing system and method for low-altitude detection radar. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a processing system for circuit pulse signals applied to low-altitude detection radar to achieve the provision.

[0005] To achieve the above object, according to an embodiment of the first aspect of the present invention, a circuit pulse signal processing system for low-altitude detection radar is provided, comprising:

[0006] The data acquisition module is used to collect the target echo data detected by the low-altitude detection radar in real time and send the target echo data to the data analysis module;

[0007] Among them, the target echo data includes the reflected radio wave waveform, reflection cross section and amplitude velocity and target slant range, target angular position and target relative velocity;

[0008] A data analysis module, which establishes a three-dimensional model of the detection area in real time according to the target echo data;

[0009] Obtain a real-time stereoscopic image of the target by analyzing the reflected radio wave waveform, reflection cross section and amplitude velocity; and

[0010] By analyzing the target slant range, target angular position and target relative speed, the real-time target stereo image is adjusted to obtain a target adjustment image;

[0011] The detection radar position that obtains the target echo data is updated in real time in the three-dimensional model, and the flight safety label is obtained according to the flight parameters of the real-time detection radar position, the target stereo image and the target adjustment image;

[0012] The flight path planning module plans the flight route of the detection radar according to the flight safety label.

[0013] Furthermore, a three-dimensional model of the detection area is established in real time according to the target echo data, including:

[0014] The low-altitude radar detection area is modeled by three-dimensional modeling software to obtain a three-dimensional model;

[0015] The target echo data is detected in real time by a low-altitude detection radar, and the initial target object image is obtained after processing and marked as the initial image;

[0016] The target object is rendered into a three-dimensional model in real time according to the initial image data; the reflected radio wave waveform, reflection cross section and amplitude velocity in the initial image are extracted as the basic parameters of the target object.

[0017] Furthermore, by analyzing the reflected radio wave waveform, reflection cross section and amplitude velocity, a real-time target stereo image is obtained, including:

[0018] Selecting a target adjustment image having the same basic parameters as the target object during real-time detection, and extracting a target slant range, a target angular position, and a target relative speed from the target adjustment image as stereoscopic parameters of the target object;

[0019] Selecting an adjusted image with different stereoscopic parameters of the target object from the target adjusted image, and rendering it to an initial image position in the three-dimensional model;

[0020] The updated initial image is labeled as the target stereo image of the target object.

[0021] Furthermore, by analyzing the target slant range, target angular position and target relative speed, the real-time target stereo image is adjusted to obtain a target adjustment image, including:

[0022] The detection radar position is updated in real time. When the detection radar moves to the initial image detection position, the target object stereo parameters of the current target stereo image are obtained, and the target object stereo image is compared with the target stereo image of the previously marked target object. If the target object stereo parameters are different, it is marked as a target adjustment image; if the target object stereo parameters are the same, the target stereo image is not processed;

[0023] Verifying basic parameters of the target object of the target adjustment image, if the basic parameters of the target objects of the two are the same, replacing the target stereo image of the target object with the target adjustment image and rendering it into the three-dimensional model;

[0024] If the basic parameters of the two target objects are different, the detection radar will re-detect the initial image position.

[0025] Furthermore, a flight safety tag is obtained according to the flight parameters of the real-time detection radar position and the target stereo image and the target adjustment image, including:

[0026] Acquire the flight parameters of the detection radar detection process in real time, wherein the flight parameters include the number of detections in which a complete target stereo image is detected and the number of target stereo images in which the target adjustment image replaces the target object;

[0027] When the number of detections of a complete target stereo image is greater than the number of times the target adjustment image replaces the target stereo image of the target object, the real-time position of the detection radar is marked with a flight safety tag.

[0028] Furthermore, the flight route of the detection radar is planned according to the flight safety tag, including:

[0029] The position of the detection radar with the flight safety label is updated in real time in the three-dimensional model, and the route with the shortest broken line length formed by connecting the moving points of the detection radar is planned as the flight route of the detection radar.

[0030] Furthermore, a method for processing a circuit pulse signal applied to a low-altitude detection radar comprises:

[0031] Step 1: Collect target echo data detected by low-altitude detection radar in real time;

[0032] Step 2: Obtain a real-time stereoscopic image of the target by analyzing the reflected radio wave waveform, reflection cross section and amplitude velocity;

[0033] Step 3: By analyzing the target slant range, target angular position and target relative speed, the real-time target stereo image is adjusted to obtain a target adjustment image;

[0034] Step 4: Obtain a flight safety label based on the real-time detection radar position and the flight parameters of the target stereo image and the target adjustment image;

[0035] Step 5: Plan the flight route of the detection radar according to the flight safety label.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. In the present invention, by selecting a target adjustment image with the same basic parameters as the target object during real-time detection, that is, the reflected radio wave waveform, reflection cross section and amplitude speed are the same, it is indicated that the detected object is the same target object; and then according to the different detection orientations of the radar during the target detection process, the target object generates different target adjustment images, that is, the target slant range, target angular position and target relative speed are used as the target object stereo parameters. According to the number of detections when the complete target stereo image is detected is greater than the number of times the target adjustment image replaces the target stereo image of the target object; and then the target stereo image is supplemented and updated in three dimensions; and the pulse signal processing of the detection is completed with a shorter detection path while ensuring the complete detection of the target object.

[0038] 2. In the present invention, in multiple processing of the stereoscopic parameters of the target object, if the stereoscopic parameters of the target object are different, it is marked as a target adjustment image; if the stereoscopic parameters of the target object are the same, the target stereoscopic image is not processed; indicating that the target object currently detected by the radar is in a stationary state;

[0039] When checking the basic parameters of the target object of the target adjustment image, if the basic parameters of the target objects of the two are the same, the target adjustment image replaces the target stereo image of the target object and is rendered into the three-dimensional model, which means that the target object currently detected by the radar is in a moving state, thereby ensuring the accuracy and completeness of information such as the spatial position, structure, form, dynamic and static state of the target object after multiple detections. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 The present invention is a schematic diagram of the working steps of a circuit pulse signal processing system applied to a low-altitude detection radar. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The technical solution involved in the present invention is mainly:

[0044] See also Figure 1 The present invention provides a circuit pulse signal processing system for low-altitude detection radar, comprising:

[0045] The data acquisition module is used to collect the target echo data detected by the low-altitude detection radar in real time and send the target echo data to the data analysis module;

[0046] Among them, the target echo data includes the reflected radio wave waveform, reflection cross section and amplitude velocity and target slant range, target angular position and target relative velocity;

[0047] A data analysis module, which establishes a three-dimensional model of the detection area in real time according to the target echo data;

[0048] The present invention can use a radar system that emits laser beams to detect the position, speed and other characteristic quantities of the target to perform three-dimensional imaging of the target object; by emitting a detection signal (laser beam) to the target, and then comparing the received signal reflected from the target (target echo) with the emitted signal, after appropriate processing, relevant information of the target can be obtained, such as target distance, direction, height, speed, attitude, and even shape parameters, so as to detect, track and identify targets such as aircraft and missiles. It consists of a laser transmitter, an optical receiver, a turntable and an information processing system. The laser converts electrical pulses into light pulses and emits them. The optical receiver then restores the light pulses reflected from the target into electrical pulses and sends them to the display.

[0049] Obtain a real-time stereoscopic image of the target by analyzing the reflected radio wave waveform, reflection cross section and amplitude velocity; and

[0050] By analyzing the target slant range, target angular position and target relative speed, the real-time target stereo image is adjusted to obtain a target adjustment image;

[0051] The detection radar position that obtains the target echo data is updated in real time in the three-dimensional model, and the flight safety label is obtained according to the flight parameters of the real-time detection radar position, the target stereo image and the target adjustment image;

[0052] The flight path planning module plans the flight route of the detection radar according to the flight safety label.

[0053] In a specific embodiment, establishing a three-dimensional model of the detection area in real time according to the target echo data includes:

[0054] The low-altitude radar detection area is modeled by three-dimensional modeling software to obtain a three-dimensional model;

[0055] The target echo data is detected in real time by a low-altitude detection radar, and the initial target object image is obtained after processing and marked as the initial image;

[0056] The target object is rendered into a three-dimensional model in real time according to the initial image data; the reflected radio wave waveform, reflection cross section and amplitude velocity in the initial image are extracted as the basic parameters of the target object.

[0057] The pulse measurement radar obtains the distance information of the target by measuring the round-trip time delay of the pulse electromagnetic wave, measures the radial velocity of the target according to the Doppler frequency in the received pulse carrier, and obtains the azimuth and elevation angle data of the target using the equal signal method.

[0058] The present invention can use a tracking radar that can form a conical beam as a low-altitude detection radar for pulse measurement; the tracking principle of the conical scanning radar is: the antenna beam deviates from the radar aiming axis (equisignal axis) by a small angle, and rotates rapidly around the aiming axis, sweeping into a cone in the direction of the maximum beam gain, so that the target echo amplitude is sinusoidally modulated. Signal demodulation and phase discrimination can obtain an angular error signal between the aiming axis and the target, which is used to control the antenna to rotate in the direction of reducing the target deflection angle to achieve angle tracking. The single pulse radar uses four receivers symmetrically configured relative to the equisignal axis to simultaneously receive the echo, compare the upper and lower pairs with the left and right pairs of received signals, and obtain an error signal to control the rotation of the antenna. When the two pairs of received signals are equal, the angle tracking is completed. While the radar is tracking, the azimuth and elevation angle data can be read from the angular encoder of the antenna base. The single pulse has higher angle measurement accuracy, higher data rate, and stronger anti-interference ability than the conical scanning method. The measurement, analysis and processing of the target echo data waveform can obtain information about the target reflection cross section, rolling speed, polarization characteristics, etc.

[0059] In a specific embodiment, a real-time target stereoscopic image is obtained by analyzing the reflected radio wave waveform, reflection cross section and amplitude velocity, including:

[0060] Selecting a target adjustment image having the same basic parameters as the target object during real-time detection, and extracting a target slant range, a target angular position, and a target relative speed from the target adjustment image as stereoscopic parameters of the target object;

[0061] Selecting an adjusted image with different stereoscopic parameters of the target object from the target adjusted image, and rendering it to an initial image position in the three-dimensional model;

[0062] The updated initial image is labeled as the target stereo image of the target object.

[0063] By analyzing the target slant range, target angular position and target relative speed, the real-time target stereo image is adjusted to obtain a target adjustment image, including:

[0064] The detection radar position is updated in real time. When the detection radar moves to the initial image detection position, the target object stereo parameters of the current target stereo image are obtained, and the parameters are compared with the target stereo image of the previously marked target object. If the target object stereo parameters are different, it is marked as a target adjustment image; if the target object stereo parameters are the same, the target stereo image is not processed; indicating that the target object currently detected by the radar is in a stationary state;

[0065] The basic parameters of the target object of the target adjustment image are checked. If the basic parameters of the target objects of the two are the same, the target adjustment image replaces the target stereo image of the target object and is rendered into the three-dimensional model; that is, it indicates that the target object currently detected by the radar is in a moving state.

[0066] If the basic parameters of the two target objects are different, the detection radar will re-detect the initial image position.

[0067] In a specific embodiment, obtaining a flight safety tag according to the real-time detection radar position and the flight parameters of the target stereo image and the target adjustment image includes:

[0068] Acquire the flight parameters of the detection radar detection process in real time, wherein the flight parameters include the number of detections in which a complete target stereo image is detected and the number of target stereo images in which the target adjustment image replaces the target object;

[0069] When the number of detections of the complete target stereo image is greater than the number of times the target adjustment image replaces the target stereo image of the target object, the real-time position of the detection radar is marked with a flight safety tag;

[0070] Specifically, the flight route of the detection radar is planned according to the flight safety tag, the position of the detection radar with the flight safety tag is updated in real time in the three-dimensional model, and the route with the shortest broken line length connected by the moving points of the detection radar is planned as the flight route of the detection radar.

[0071] The working principle of the present invention is: collecting target echo data detected in real time by low-altitude detection radar;

[0072] By analyzing the reflected radio wave waveform, reflection cross section and amplitude speed, a real-time stereo image of the target is obtained;

[0073] By analyzing the target slant range, target angular position and target relative speed, the real-time target stereo image is adjusted to obtain a target adjustment image;

[0074] Obtain flight safety labels based on flight parameters of real-time detection radar position and target stereo image and target adjustment image;

[0075] Plan the flight route for detecting radar according to the flight safety label.

[0076] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0077] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Circuit pulse signal processing system used in low-altitude detection radar, It is characterized in that include: The data acquisition module is used to collect the target echo data detected by the low-altitude detection radar in real time and send the target echo data to the data analysis module; Among them, the target echo data includes the reflected radio wave waveform, reflection cross section, amplitude velocity, target slant range, target angular position and target relative velocity; A data analysis module, which establishes a three-dimensional model of the detection area in real time according to the target echo data; Obtain a real-time stereoscopic image of the target by analyzing the reflected radio wave waveform, reflection cross section and amplitude velocity; and By analyzing the target slant range, target angular position and target relative speed, the real-time target stereo image is adjusted to obtain a target adjustment image; The detection radar position that obtains the target echo data is updated in real time in the three-dimensional model. The flight safety label is obtained according to the flight parameters of the real-time detection radar position, the target stereo image and the target adjustment image, including: Acquire the flight parameters of the detection radar detection process in real time, wherein the flight parameters include the number of detections in which a complete target stereo image is detected and the number of target stereo images in which the target adjustment image replaces the target object; When the number of detections of the complete target stereo image is greater than the number of times the target adjustment image replaces the target stereo image of the target object, the real-time position of the detection radar is marked with a flight safety tag; The flight path planning module plans the flight route of the detection radar according to the flight safety label.

2. The processing system for circuit pulse signals applied to low-altitude detection radar according to claim 1, It is characterized in that A three-dimensional model of the detection area is established in real time according to the target echo data, including: The low-altitude radar detection area is modeled by three-dimensional modeling software to obtain a three-dimensional model; The target echo data is detected in real time by a low-altitude detection radar, and the initial target object image is obtained after processing and marked as the initial image; The target object is rendered into a three-dimensional model in real time according to the data of the initial image; the reflected radio wave waveform, reflection cross section and amplitude velocity in the initial image are extracted as the basic parameters of the target object.

3. The processing system for circuit pulse signals applied to low-altitude detection radar according to claim 2, It is characterized in that By analyzing the reflected radio wave waveform, reflection cross section and amplitude velocity, a real-time stereoscopic image of the target is obtained, including: Selecting a target adjustment image having the same basic parameters as the target object during real-time detection, and extracting a target slant range, a target angular position, and a target relative speed from the target adjustment image as stereoscopic parameters of the target object; Selecting an adjusted image with different stereoscopic parameters of the target object from the target adjusted image, and rendering it to an initial image position in the three-dimensional model; The updated initial image is labeled as the target stereo image of the target object.

4. The processing system for circuit pulse signals applied to low-altitude detection radar according to claim 3, It is characterized in that By analyzing the target slant range, target angular position and target relative speed, the real-time target stereo image is adjusted to obtain a target adjustment image, including: The detection radar position is updated in real time. When the detection radar moves to the initial image detection position, the target object stereo parameters of the current target stereo image are obtained, and the target object stereo image is compared with the target stereo image of the previously marked target object. If the target object stereo parameters are different, it is marked as a target adjustment image; if the target object stereo parameters are the same, the target stereo image is not processed; The target object basic parameters of the target adjustment image are checked. If the target object basic parameters of the two are the same, the target adjustment image replaces the target stereo image of the target object and is rendered into the three-dimensional model.

5. The processing system for circuit pulse signals applied to low-altitude detection radar according to claim 1, It is characterized in that Plan the flight path for detecting radar according to the flight safety label, including: The position of the detection radar with the flight safety label is updated in real time in the three-dimensional model, and the route with the shortest broken line length formed by connecting the moving points of the detection radar is planned as the flight route of the detection radar.

6. The circuit pulse signal processing system for low-altitude detection radar according to claim 4, It is characterized in that The basic parameters of the target object of the target adjustment image are checked, including: If the basic parameters of the two target objects are different, the detection radar will re-detect the initial image position.

7. A processing method for a circuit pulse signal processing system applied to a low-altitude detection radar as claimed in any one of claims 1 to 6, It is characterized in that include: Step 1: Collect target echo data detected by low-altitude detection radar in real time; Step 2: Obtain a real-time stereoscopic image of the target by analyzing the reflected radio wave waveform, reflection cross section and amplitude velocity; Step 3: By analyzing the target slant range, target angular position and target relative speed, the real-time target stereo image is adjusted to obtain a target adjustment image; Step 4: Obtain a flight safety label based on the real-time detection radar position and the flight parameters of the target stereo image and the target adjustment image; Step 5: Plan the flight route of the detection radar according to the flight safety label.

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