A radar combined situation analysis method

Abstract

The ground target indication radar is an air defense information radar, usually uses a medium-range or short-range two-coordinate radar or three-coordinate radar with strong maneuverability and high data rate, and timely and continuously provides information such as position, speed and nature of the target. The interaction with the radar is generally realized through a radar situation display and control software, and mainly completes functions such as system parameter control, target monitoring, discrimination, intervention and the like. When a target indication radar personnel monitors a radar target, full graphical information is presented, and no numbers, words or tables are needed. Traditional graphical display forms include P display, H display, B display and E display and the like. The traditional graphical display method can display the target detection situation on different sides, but cannot give sufficient information support for the attributes such as authenticity of the target. Especially for low-altitude targets, it is necessary to complete the preparation discrimination of the information quality of the detected target as soon as possible in a very short time. The present application proposes a radar combined situation analysis method, which is more suitable for the research and judgment of the authenticity and quantity of the target by combining the echo D-V data with the traditional situation combined display, and provides strong support for the rapid acquisition of information by the target indication radar.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of radar situation display, and particularly relates to a radar combined situation analysis method. BACKGROUND

[0002] The ground target indication radar is an air defense information radar, and generally uses a medium-range or short-range two-coordinate radar or three-coordinate radar with high maneuverability and high data rate to timely and continuously provide information such as the position, speed and nature of a target. The interaction with the radar is generally realized through a radar situation display and control software, and mainly completes functions such as system parameter control, target monitoring, discrimination and intervention. When a target indication radar personnel monitors a radar target, full graphical information is presented, and no numbers, words or tables are needed. Traditional graphical forms include P display, H display, B display and E display. The traditional graphical display method can display the target detection situation from different sides, but cannot provide sufficient information support for the authenticity of the target. In particular, for low-altitude targets, it is necessary to quickly prepare for the discrimination of the information quality of the detected target in a very short time. SUMMARY

[0003] To solve the problems in the prior art, the present application provides a radar combined situation analysis method, which is more suitable for the discrimination of the authenticity and quantity of a target by combining echo D-V data with traditional situation combination display, and provides strong support for the rapid acquisition of information by a target indication radar. The method specifically includes the following steps:

[0004] 10) Conventional target track data reception: receiving and analyzing the track data detected by the radar, and performing relevant buffer processing.

[0005] 20) Traditional target situation display: reflecting the position information and parameter information of a target in space in a planar form.

[0006] 30) D-V (distance-velocity) matrix display: in the traditional target situation display, a target is specified, a D-V display control is selected, D-V information is received and displayed.

[0007] 40) D-V adjustment display: adjusting the echo D range, V range and color mapping amplitude range, and updating the target D-V situation graph.

[0008] 50) Combined situation display: through the traditional target display situation graph and the visual D-V graph, real-time comparative display is performed, the authenticity of a target is intuitively discriminated, and radar information is more quickly and accurately acquired.

[0009] Further, the traditional target situation display includes P display (full-view planar display), H display (height planar display), B display (right-angle planar display) and E display (elevation planar display) display modes.

[0010] Further, the step 30) specifically comprises: the D-V information comprises distance, azimuth, Doppler filter number and amplitude information, assuming that the distance unit number R N , the azimuth channel number A N , the maximum value of the Doppler filter number is C N , and the signal amplitude is U, then the spatial unit number is:

[0011] Cell N = R N A N C N

[0012] The amplitude value is normalized:

[0013] U' = log (U / 1e7) x 20 + 50

[0014] The D-V information is displayed according to different azimuth channels, each azimuth channel displays R N x C N spatial units, and the normalized amplitude U' is represented by different colors to indicate the strength and weakness.

[0015] Further, the step 40) further comprises: adjusting the Doppler filter number, selecting a distance range, comparing the pre-adjustment and post-adjustment situation analysis diagrams, and matching the echo image, which can assist the user in evaluating the current and pre-adjustment D-V situation.

[0016] The present application has the following advantages:

[0017] (1) The improved situation analysis method increases the D-V matrix display of the echo, which is beneficial to the intuitive monitoring of the detected target based on the conventional situation analysis method.

[0018] (2) The improved situation analysis method performs graphical display on the existing detected target echo, and further combines with artificial comprehensive evaluation, so that the authenticity of the detected target can be more accurately evaluated, thereby providing a basis for decision-making.

[0019] (3) By adjusting the D-V coordinates and amplitude display range, the pre and post situation diagrams are compared, which is convenient for the judgment of the target number.

[0020] (4) Compared with the existing Doppler spectrum analysis technology, the improved method can also determine whether the echo signal is an interference signal according to the motion trajectory of the echo signal, which is beneficial to eliminating false alarms. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a D-V combined situation analysis flowchart.

[0022] Figure 2This is a diagram showing the correspondence between the DV matrix and the target signal.

[0023] Figure 3 This is a schematic diagram of a DV matrix.

[0024] Figure 4 This is a dialog box for displaying the DV matrix of a single batch of targets.

[0025] Figure 5 This is a dialog box for displaying multiple batches of target DV matrices.

[0026] Figure 6 This is a situation diagram of the P display and DV combination.

[0027] Figure 7 This is a situation diagram of the H-display and DV combination. Detailed Implementation

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0029] like Figure 1 As shown, the radar combined situation analysis method of the present invention includes the following steps:

[0030] 10) Receiving conventional target track data: Receiving and parsing track data detected by radar, and performing relevant buffering processing;

[0031] 20) Traditional target situation display: Reflects the target's spatial position and parameter information in a planar form using radar track data, including P display, H display, B display, E display, etc.

[0032] 30) DV Matrix Display: When a target is specified in the traditional situation display, DV display control is selected to receive and display DV data;

[0033] The raw DV information includes range, azimuth, Doppler filter number, and amplitude information. Assume the number of range units is R. N Azimuth channel number A N The maximum value of the Doppler filter signal (i.e., the number of coherent accumulation points) is C. N The signal amplitude is U. Then the number of spatial units is:

[0034] Cell N =R N A N C N

[0035] Normalize the amplitude value:

[0036] U′=log(U / 1e7)×20+50.

[0037] Display DV information according to different azimuth channels, with each azimuth channel displaying R.N X C N The normalized amplitude U' is represented by color (red represents the strongest amplitude, and blue represents the weakest amplitude).

[0038] 40) D-V adjustment display: adjust echo D range, V range, color mapping amplitude range, and update target D-V trend chart;

[0039] By manually adjusting Figure 5 The middle sliding longitudinal coordinate bar is used to pre-adjust the corresponding Doppler filter number of the current batch number, and a typical horizontal coordinate distance range can be selected, the horizontal coordinate is distance, and the unit is km, and the longitudinal coordinate is the Doppler filter number. By comparing the trend analysis charts before and after the adjustment, the corresponding image of the echo can assist the user in evaluating the current and pre-adjusted D-V trend.

[0040] 50) Combined trend display: real-time comparison and display through the traditional trend chart and the D-V trend chart. The traditional target display trend chart is added with the visual D-V chart, so that the attributes of the target, such as the number of sorties and authenticity, can be intuitively judged, and the operator can obtain more accurate radar information more quickly.

[0041] The present application is not limited to the above specific embodiments, and various modifications and changes can be made to the present application. Any modification, equivalent replacement, improvement and the like made to the above embodiments according to the technical essence of the present application shall be included in the protection scope of the present application.

Claims

1. A radar composite situation analysis method, characterized by: It comprises the following steps: 10) Receiving and analyzing the radar track data and performing relevant buffer processing; 20) Conventional target situation display: reflecting the spatial position information and parameter information of the target in a planar form; 30) D-V matrix display: selecting the D-V display control after designating the target in the conventional target situation display, receiving and displaying the D-V information, wherein D represents distance and V represents speed; 40) D-V adjustment display: adjusting the echo D range, V range and color mapping amplitude range, and updating the target D-V situation diagram; 50) Combined situation display: comparing and displaying the conventional target display situation diagram and the visual D-V situation diagram in real time, and intuitively judging the target attributes to obtain the radar information more quickly and accurately; The step 30) specifically includes: the D-V information includes distance, azimuth, Doppler filter number and amplitude information, assuming distance unit number , azimuth channel number , the maximum value of the Doppler filter number is , the signal amplitude is , and the spatial unit number is: The amplitude values are normalized: , The D-V information is displayed in different azimuth channels, each azimuth channel displays a spatial unit, the normalized amplitude The intensity is represented by different colors.

2. The radar suite posture analysis method of claim 1, wherein: The conventional target situation display comprises P display, H display, B display and E display display modes.

3. The radar suite posture analysis method of claim 1, wherein: The step 40) further comprises: adjusting the Doppler filter number, selecting the distance range, comparing the pre-adjustment and post-adjustment situation analysis diagrams, and assisting the user in evaluating the current and pre-adjustment D-V situation according to the echo image.

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