An optimization method for the minimum radar guidance altitude in a radar control sector

Abstract

The present invention discloses a method for optimizing the minimum radar guidance altitude of a radar control sector, which belongs to the field of civil aviation. The optimization method includes: S1, obtaining the height and distance of all obstacles within the radar range; S2, calculating the distance from each boundary point of the sector to the radar; S3, determining the minimum monitoring guidance altitude H = h + 300; S4, determining the maximum shielding angle θ0 and the obstacle height h of the maximum shielding angle. θo , and convert to get the equivalent high h dso ; S5, calculate the maximum shielding angle θ of the sector boundary o , receiving point H = h dso +300, the distance from the radar center is D θ0 ; Finally, if D θ0 ≥D max , H=h dso +300, if D θ0 <D max , using θ o To back calculate the location D max The height H(θ o ‑D max The method of the present invention combines the obstacle shielding angle and the sector boundary distance to determine the radar minimum monitoring and guidance altitude, thereby improving the coverage capability of the radar sector.

Description

Technical Field

[0001] The invention belongs to the field of civil aviation technology, and in particular relates to a method for optimizing the minimum radar guidance altitude of a radar control sector. Background Art

[0002] According to Civil Aviation Administration of China Order No. 122, "Measures for the Use of Airspace by Civil Aviation," the minimum radar vectoring altitude for a radar control sector refers to the altitude required to meet the minimum flight altitude and for controllers to implement radar vectoring within the radar control sector, determined based on terrain, communications, and radar signal coverage. This value should be rounded up to the nearest 50 meters. According to Article 12 of MD-TM-2005-002, "Minimum Radar Vectoring Altitude Regulations," the minimum radar vectoring altitude for a radar vectoring sector should be the elevation of the controlled obstacle within the radar vectoring sector's obstacle clearance zone, plus the corresponding obstacle clearance margin, rounded up to the nearest 50 meters. Article 13 stipulates that the obstacle clearance margin within the radar vectoring sector's obstacle clearance zone should be determined based on terrain characteristics, providing a minimum obstacle clearance margin of 300 meters and up to 600 meters in plateau and mountainous areas.

[0003] Therefore, under normal circumstances, the minimum radar guidance altitude of the radar control sector is set at the height of the highest controlled obstacle in the radar sector plus 300 meters, rounded up to the nearest 50 meters. This demarcation method can meet some radar surveillance performance requirements, but in actual operation, there are still obvious disadvantages. During the analysis of most radar sectors, it was found that this altitude cannot fully support the operation of the entire sector. At the same time, this processing method is not suitable for situations where multiple obstacles are almost the same height but at different distances.

[0004] Therefore, the traditional demarcation method has obvious problems: when there are several obstacles with relatively small height differences but large differences in distance from the radar, using the highest obstacle as the control point, while appearing to be the highest, may actually be farther from the radar, resulting in a smaller obstruction angle. Other obstacles, while not as high as the highest control obstacle, may be closer to the radar, resulting in a larger obstruction angle. Furthermore, the distances from the radar center to each boundary within the 360-degree sector vary, with some sector boundaries being set farther away. This requires a comprehensive consideration of the sector's distance.

[0005] Therefore, providing an optimization method for the minimum radar guidance altitude of a radar control sector to ensure good coverage within the radar control sector has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of the present invention is to provide a method for optimizing the minimum radar guidance altitude of a radar control sector, which combines the positions and heights of multiple obstacles and the distance of the sector boundary from the radar to jointly determine the minimum surveillance guidance altitude within the sector range, thereby solving the technical problem in the prior art that when the sector is demarcated according to the height of the highest control point obstacle + 300 meters, the radar signal may not be able to fully support all positions in the sector.

[0007] After a lot of experiments and creative work, the applicant found that the shielding angle of a certain aerial point is related to the height of the point and the distance between the point and the radar. The optimization of the sector height is to ensure that every point within the sector demarcation range should be guaranteed to be fully covered. According to the airport sector division, some sector boundary points of some airports are standard circles, which means that the distance from each sector boundary point to the radar is the same, but the distance from each boundary point of most sectors to the radar is different. Therefore, when determining the minimum surveillance and guidance height of each sector within the radar's minimum surveillance and guidance sector, the minimum surveillance and guidance height of the radar sector should be formulated in combination with the two influencing factors of obstacle shielding angle and sector boundary distance.

[0008] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0009] The present invention provides a method for optimizing the minimum radar guidance altitude of a radar control sector, comprising the following steps:

[0010] S1. With the radar as the center, obtain the height and horizontal distance of all obstacles within the range of 0 to 360 degrees; for multiple obstacles, define the height and horizontal distance of each obstacle separately.

[0011] Obstacle 1: height h1, distance ds1;

[0012] Obstacle 2: height h2, distance ds2;

[0013] …

[0014] Obstacle n: height h n 、Distance ds n ,

[0015] Determine the height of the highest obstacle as ho, ho = max(h1, h2, ... h n ), the horizontal distance is defined as dso;

[0016] Enter S2;

[0017] S2. Determine the boundary points of the sector to be analyzed and calculate the horizontal distance from each boundary point to the radar center;

[0018] S3. Preliminary determination of the minimum surveillance guidance altitude H = h + 300; h = ho;

[0019] S4. Determine the maximum shielding angle θ0 and the obstacle height h at the maximum shielding angle θo ;

[0020] When the height h of the highest obstacle is equal to the height h of the obstacle with the largest shielding angle θo When the minimum monitoring and guidance altitude H=h θo +300.

[0021] In some embodiments of the present invention, in S4, when the height h of the highest obstacle is not equal to the height h of the obstacle with the largest shielding angle θo When the minimum monitoring guidance altitude H needs to be re-optimized, the optimization step goes to S5;

[0022] S5. Convert the obstacle with the largest shielding angle to the equivalent height of the highest obstacle, that is, h dso , at this time h dso It must be greater than the purely physical height of the highest obstacle;

[0023] If the horizontal distance from the boundary of each sector to the radar is the same, the minimum surveillance guidance altitude is optimized to H = h dso +300.

[0024] In some embodiments of the present invention, in S5, if the horizontal distances between the boundaries of the sector in each direction and the radar are different, it is necessary to optimize the minimum surveillance and guidance altitude, and the optimization step proceeds to S6:

[0025] S6. According to the calculation results of S2, determine the farthest horizontal distance D from the radar max ;

[0026] Assuming that the obstacle with the largest shielding angle is located at the sector boundary point farthest from the radar center, it is necessary to calculate whether this shielding angle can cover the maximum distance D max Calculate

[0027]

[0028] In formula (1), D θ0 Indicates that the receiving point is H=h dso +300: horizontal distance from the radar center, unit: kilometers;

[0029] θ0: Maximum obstacle shielding angle, unit: °;

[0030] ha: height of radar transmitting antenna from the ground, unit: meter;

[0031] D maxIndicates the horizontal distance between the sector boundary farthest from the radar and the radar, in kilometers;

[0032] If D θ0 ≥D max , the minimum surveillance and guidance altitude is set to H = h dso +300.

[0033] In some embodiments of the present invention, if D θ0 <D max The shielding angle of the obstacle itself is much larger than the shielding of the radar at the farthest boundary point according to the revised minimum surveillance guidance altitude. The maximum obstacle shielding angle θ is required. o To back calculate the location D max The specific calculation formula is as follows:

[0034]

[0035] H(θ o -D max ) represents the minimum surveillance guidance altitude after correction based on the sector boundary distance, in meters;

[0036] θ0: Maximum obstacle shielding angle, unit: °;

[0037] D max Indicates the horizontal distance between the sector boundary farthest from the radar and the radar, in kilometers;

[0038] ha: Height of radar transmitting antenna from the ground, unit: meter.

[0039] In some implementation schemes of the present invention, in S1, with the radar as the center of the circle, the heights and distances of all obstacles in the entire range of 0 to 360 degrees are obtained at intervals of 1 degree.

[0040] In some embodiments of the present invention, in S6, the farthest distance D from the radar is determined as follows: max :

[0041] With the radar as the center of the coordinate point, assuming that the analysis sector has n boundary points, the distances of each sector boundary point from the radar are calculated as |CS1|, |CS2|, |CS3|…|CSn|. Based on each distance, the distance D of the sector boundary farthest from the radar is calculated. max , D max =max(|CS1|, |CS2|, |CS3|...|CSn|).

[0042] In some embodiments of the present invention, in S4, the shielding angle of each obstacle is calculated according to the following formula:

[0043]

[0044] In formula (3), θ i : The shielding angle of obstacle i, unit: °;

[0045] h i : The height of obstacle i, unit: meter

[0046] ha: height of radar transmitting antenna from the ground, unit: meter

[0047] ds i : The equivalent arc length between the antenna and obstacle i at a radius of R+ha from the center of the earth, in kilometers;

[0048] Find all the shielding angles θ i (i=1,2…n), determine the maximum obstacle shielding angle θ0,

[0049] θ0=max(θ1,θ2…θ n ).

[0050] In some embodiments of the present invention, in S5, h is calculated as follows: dso : Set the position of the highest obstacle dso as the position to be calculated; convert the obstacle with the largest shielding angle to the equivalent height of the highest obstacle position through the radar range calculation formula, that is, h dso ;

[0051]

[0052] θ0: Maximum obstacle shielding angle, unit: °;

[0053] ha: height of radar transmitting antenna from the ground, unit: meter;

[0054] dso: distance to the highest obstacle, in kilometers.

[0055] In the technical solution of the present invention, the derivation process of formula (3) is as follows:

[0056] Assume there is an obstacle m. First, establish the relative position relationship of the obstacle m:

[0057]

[0058] ha: height of radar transmitting antenna from the ground, unit: meter

[0059] R: Earth radius, unit: meter

[0060] ds m1 : The distance between the antenna and the obstacle m along the earth's surface at a radius of R from the center of the earth, in meters;

[0061] ds m2 : The equivalent arc length between the antenna and the obstacle m at a radius of R+ha from the center of the earth, in meters;

[0062] θ m : The angle between the antenna and the obstacle m relative to the center of the earth, unit: °;

[0063] Find ds m1 and ds m2

[0064]

[0065]

[0066] From the above relationship, we can know that: ds m1 with ds m2 Related, ds m1 and θ m related;

[0067] According to θ S =θ S1 -θ S2 , to get tanθ S , we must first find tanθ S1 and tanθ S2 ,in:

[0068] θ S : the shielding angle to be obtained;

[0069] θ S1 : Based on the height of the antenna, a point is obtained by translating along the surface of the earth to the obstacle, and the angle formed between this point and the antenna and the top of the obstacle;

[0070] θ S2 :Based on the height of the antenna, move horizontally along the surface of the earth to the obstacle and get a point. At the same time, assume that the shielding is θ S When , the lower edge of the shielding angle extends to the obstacle to form another point, and the angle formed between these two points and the antenna;

[0071] According to the relative position relationship:

[0072]

[0073] hs: obstacle height from the ground, unit: meter;

[0074] Calculate θ S2 The analysis shows that

[0075]

[0076] When θS2 When it is very small, tanθ S2 ≈θ S2

[0077] The calculation formula of radar shielding angle is:

[0078]

[0079] By using the above equation, the relative shielding angle of each obstacle is calculated.

[0080]

[0081] Find all the shielding angles θ i (i=1,2,…n), determine the maximum obstacle shielding angle θ0, θ0=max(θ 1, θ 2… θ n ), then the obstacle under the maximum shielding angle is the obstacle with the largest relative shielding, assuming that the height of this obstacle is h θo .

[0082] Compared with the prior art, the present invention has the following beneficial effects:

[0083] The present invention is scientifically designed and ingeniously conceived. The method of the present invention does not change the definition of the minimum radar surveillance and guidance altitude in traditional civil aviation regulations, but combines the actual site environment. During the analysis process, not only the physical height of the obstacle is considered for definition, but also the key factor of the distance of the obstacle relative to the radar is simultaneously considered. On this basis, the physical height of the obstacle and the equivalent height of the obstacle are distinguished, the original algorithm is corrected, and the algorithm is further optimized in combination with the distance of the sector, so that the definition of the minimum surveillance and guidance altitude is more scientific and reasonable and very convenient to use.

[0084] The use of the method of the present invention can greatly improve the coverage of the radar on the sector, improve the coverage capability of the radar control sector, and avoid the repeated occurrence of sectors across the country that cannot be supported due to the low minimum monitoring and guidance altitude; the method is also relatively convenient to apply. For radar operation and management personnel, they only need to master the surveying and mapping data and sector data to make inferences. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] Attachment Figure 1 This is a flow chart of the optimization method of the present invention;

[0086] Attachment Figure 2 Schematic diagram of the shielding angle calculation method of the present invention;

[0087] Attachment Figure 3 Schematic diagram of the optimization method of the present invention Figure 1 ;

[0088] Attachment Figure 4 Schematic diagram of the optimization method of the present invention Figure 2 ;

[0089] Attachment Figure 5 Schematic diagram of the optimization method of the present invention Figure 3 . DETAILED DESCRIPTION

[0090] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0091] The present invention provides a method for optimizing the minimum radar guidance altitude of a radar control sector, comprising the following steps:

[0092] S1. With the radar as the center of the circle, calculate the height and horizontal distance of all obstacles within the range of 0 to 360° at 1° intervals. For multiple obstacles, define the height and horizontal distance of each obstacle separately:

[0093] Obstacle 1: height h1, distance ds1;

[0094] Obstacle 2: height h2, distance ds2;

[0095] …

[0096] Obstacle n: height h n 、Distance ds n ,

[0097] Determine the height of the highest obstacle as ho, ho = max(h1, h2, ... h n ), the horizontal distance is defined as dso;

[0098] Enter S2;

[0099] S2. Determine the boundary points of the sector to be analyzed and calculate the horizontal distance from each boundary point to the radar center;

[0100] With the radar as the center of the coordinate point, assuming that the analysis sector has n boundary points,

[0101] The distances between each sector boundary point and the radar are |CS1|, |CS2|, |CS3|…|CSn|;

[0102] S3. Preliminarily determine the minimum surveillance and guidance altitude H = h + 300, h = ho;

[0103] S4. Determine the maximum shielding angle θ0 and the obstacle height h at the maximum shielding angle θo ;

[0104] According to the following formula, calculate the shielding angle of each obstacle;

[0105]

[0106] In formula (3), θ i : The shielding angle of obstacle i, unit: °;

[0107] h i : The height of obstacle i, unit: meter

[0108] ha: height of radar transmitting antenna from the ground, unit: meter

[0109] ds i : The equivalent arc length between the antenna and obstacle i at a radius of R+ha from the center of the earth, in kilometers;

[0110] Find all the shielding angles θ i (i=1,2…n), determine the maximum obstacle shielding angle θ0,

[0111] θ0=max(θ1,θ2…θ n ).

[0112] Then the obstacle under the maximum shielding angle is the obstacle with the largest relative shielding. Assume that the height of this obstacle is h θo .

[0113] When the height h of the highest obstacle is equal to the height h of the obstacle with the largest shielding angle θo When the minimum monitoring and guidance altitude H=h θo +300.

[0114] When the height h of the highest obstacle is not equal to the height h of the obstacle with the largest shielding angle θo When the minimum monitoring guidance altitude H needs to be re-optimized, the optimization step goes to S5;

[0115] S5. Convert the obstacle with the largest shielding angle to the equivalent height of the highest obstacle, i.e. h dso , at this time h dso It must be greater than the purely physical height of the highest obstacle;

[0116] Calculate h as follows dso : Set the position of the highest obstacle dso as the position to be calculated; convert the obstacle with the largest shielding angle to the equivalent height of the highest obstacle position through the radar range calculation formula, that is, hdso ;

[0117]

[0118] θ0: Maximum obstacle shielding angle, unit: °;

[0119] ha: height of radar transmitting antenna from the ground, unit: meter;

[0120] dso: distance to the highest obstacle, unit: kilometers;

[0121] If the sector boundary distances in all directions are the same, the minimum surveillance guidance altitude is optimized to H = h dso +300.

[0122] If the sector boundary distances at different directions are different, the minimum surveillance guidance altitude needs to be optimized. The optimization step goes to S6:

[0123] S6. According to the calculation results of S2, determine the farthest horizontal distance D from the radar max ;

[0124] D max =max(|CS1|, |CS2|, |CS3|…|CSn|);

[0125] Assuming that the obstacle with the largest shielding angle is located at the sector boundary point farthest from the radar center, it is necessary to calculate whether this shielding angle can cover the maximum distance D max Calculate

[0126]

[0127] In formula (1), D θ0 Indicates that the receiving point is H=h dso +300: horizontal distance from the radar center, unit: θ0: maximum obstacle shielding angle, unit: °;

[0128] ha: height of radar transmitting antenna from the ground, unit: meter;

[0129] D max Indicates the horizontal distance from the sector boundary farthest from the radar to the radar, in kilometers;

[0130] If D θ0 ≥D max , the minimum surveillance and guidance altitude is set to H = h dso +300.

[0131] If D θ0 <D maxThe shielding angle of the obstacle itself is much larger than the shielding of the radar at the farthest boundary point according to the revised minimum surveillance guidance altitude. The maximum obstacle shielding angle θ is required. o To back calculate the location D max The specific calculation formula is as follows:

[0132]

[0133] H(θ o -D max ) represents the minimum surveillance and guidance altitude after correction according to the distance from the sector boundary;

[0134] θ0: Maximum obstacle shielding angle, unit: °;

[0135] D max Indicates the horizontal distance between the sector boundary farthest from the radar and the radar, in kilometers;

[0136] ha: Height of radar transmitting antenna from the ground, unit: meter.

[0137] Example 1

[0138] For example, in a radar sector, the highest obstacle height within the sector is 500 meters. According to existing regulations, the minimum surveillance and guidance altitude should be 800 meters. However, analysis shows that 800 meters cannot support coverage of the entire sector. The radar minimum surveillance and guidance altitude determined by the original method is clearly insufficient. After calculation, it was finally raised to 1710 meters to cover the entire sector. The specific calculation method is as follows:

[0139] 1. The antenna is 300 meters above sea level. There are three high obstacles within a 360-degree radius around the radar.

[0140] Obstacle 1 is 500 meters high and 37 kilometers away;

[0141] Obstacle 2 is 480 meters high and 29.6 kilometers away;

[0142] Obstacle 3 is 450 meters high and 40.7 kilometers away;

[0143] The highest obstacle is h = 500 meters.

[0144] 2. Determine the boundary points of the sector to be analyzed and calculate the distance from the five boundary points to the radar center.

[0145] |CS1| = 83.3 km;

[0146] |CS2| = 98.2 km;

[0147] |CS3| = 122.2 km;

[0148] |CS4| = 101.9 km;

[0149] |CS5| = 111.1 km;

[0150] The maximum Dmax is determined to be 122.2 km.

[0151] 3. Preliminary determination of the minimum surveillance and guidance altitude H = 500 + 300 = 800 (m).

[0152] 4. Determine the maximum shielding angle and the obstacle height at which the maximum shielding angle occurs;

[0153] The θ1 of obstacle 1 is: 0.184°

[0154] The θ2 of obstacle 2 is: 0.248°

[0155] The θ3 of obstacle 3 is: 0.073°

[0156] The obstacle with the largest shielding angle is obstacle 2, and the largest shielding angle is θ o =0.248°, the height of the obstacle is h θo =480 (meters).

[0157] 5. Calculate the equivalent h according to formula (4) dso =541 (m);

[0158]

[0159] 6. The minimum monitoring and guidance altitude is optimized to H = h dso +300=841 (m);

[0160] 7. Calculate D according to formula (1) θ0

[0161]

[0162] Calculated D θ0 =111.1 kilometers.

[0163] 8. Analyze according to step 2. If D θ0 ≥D max , then, the minimum surveillance guidance altitude is set to H = 841 (m); but the D θ0 <D max , the largest obstacle needs to be used to block the angle θ o To back calculate the location D max The specific calculation formula is as follows:

[0164]

[0165] Therefore, it is necessary to correct H = 1710 (meters). Therefore, in order to cover the entire control sector, the minimum surveillance and guidance altitude should be set at 1710 meters.

[0166] The above embodiment is only one of the preferred implementation methods of the present invention and should not be used to limit the scope of protection of the present invention. Any changes or modifications that have no substantive meaning made to the main design concept and spirit of the present invention, as long as the technical problems solved are still consistent with the present invention, should be included in the scope of protection of the present invention.

Claims

1. A method for optimizing the minimum radar guidance altitude of a radar control sector, characterized in that: The following steps are involved: S1. With the radar as the center, obtain the height and horizontal distance of all obstacles within the range of 0~360°; for multiple obstacles, define the height and horizontal distance of each obstacle separately. Obstacle 1: Height h 1. The distance is ds 1; Obstacle 2: Height h 2. Distance ds 2; …… Obstacle n: height is h n , the distance is ds n ; Determine the height of the highest obstacle as h o, h o=max( h 1, h 2,… h n ), the horizontal distance is defined as dso; Enter S2; S2. Determine the boundary points of the sector to be analyzed and calculate the horizontal distance from each boundary point to the radar center. S3. Preliminary determination of the minimum surveillance and guidance altitude H= h +300, h = h o; S4. Determine the maximum shielding angle θ o , and the obstacle height at the maximum shielding angle h θo ; When the height of the highest obstacle h Equal to the obstacle height with the maximum shielding angle h θo When the minimum surveillance guidance altitude H= h θo +300; In S4, when the height of the highest obstacle h The obstacle height that is not equal to the maximum shielding angle h θo When the minimum monitoring guidance altitude H needs to be re-optimized, the optimization step goes to S5; S5. Convert the obstacle with the largest shielding angle to the equivalent height of the highest obstacle, that is, h dso , at this time h dso It must be greater than the purely physical height of the highest obstacle; If the horizontal distance from the boundary of each sector to the radar is the same, the minimum surveillance guidance altitude is optimized to H= h dso +300; In S5, if the horizontal distances between the boundaries of the sector in each direction and the radar are different, the minimum surveillance guidance altitude needs to be optimized, and the optimization step proceeds to S6: S6. Determine the maximum horizontal distance from the radar based on the calculation results of S2 D max ; Assuming that the obstacle with the largest shielding angle is located at the sector boundary point farthest from the radar center, it is necessary to calculate whether this shielding angle can cover the farthest distance. D max Calculate （1） In formula (1), D θ0 Indicates that the receiving point is H= h dso +300: horizontal distance from the radar center, unit: kilometers; θ 0: Maximum obstacle shielding angle, unit: °; ha : The height of the radar transmitting antenna from the ground, unit: meter; D max Indicates the horizontal distance between the sector boundary farthest from the radar and the radar, in kilometers; if D θ0 ≥ D max The minimum surveillance and guidance altitude is set at H= h dso +300.

2. The method for optimizing the minimum radar guidance altitude of a radar control sector according to claim 1, characterized in that: if D θ0 < D max The shielding angle of the obstacle itself is much larger than the shielding of the radar at the farthest boundary point after the revised minimum surveillance guidance altitude. The largest obstacle shielding angle is required. θ o To back calculate the location D max The specific calculation formula is as follows: （2） H( θ 0, D max ) represents the minimum surveillance guidance altitude after correction based on the sector boundary distance, in meters; θ 0: Maximum obstacle shielding angle, unit: °; D max Indicates the horizontal distance between the sector boundary farthest from the radar and the radar, in kilometers; ha : Height of radar transmitting antenna from the ground, unit: meter.

3. The method for optimizing the minimum radar guidance altitude of a radar control sector according to claim 1, characterized in that: In S1, with the radar as the center of the circle, the height and distance of all obstacles in the entire range of 0~360° are obtained with 1° as the interval.

4. The method for optimizing the minimum radar guidance altitude of a radar control sector according to claim 1, wherein: In S4, the shielding angle of each obstacle is calculated according to the following formula: （3） In formula (3), θ i :obstacle i Shielding angle (i=1,2…n), unit:°; h i :obstacle i Height, unit: meter; ha : The height of the radar transmitting antenna from the ground, unit: meter; ds i :The radius from the center of the earth is R+ ha Antenna and obstacles i The equivalent arc length between them is in kilometers; R: Earth radius, unit: kilometers; Find all the occlusion angles θ i ( i =1,2…n), determine the maximum obstacle shielding angle θ 0, θ 0=max( θ 1, θ 2… θ n )。 5. The method for optimizing the minimum radar guidance altitude of a radar control sector according to claim 1, wherein: In S5, the following method is used to calculate h dso : Set the position of the highest obstacle dso as the position to be calculated; convert the obstacle with the largest shielding angle to the equivalent height of the position of the highest obstacle through the radar range calculation formula, that is, h dso ; （4） θ 0: Maximum obstacle shielding angle, unit: °; ha : The height of the radar transmitting antenna from the ground, unit: meter; dso : The horizontal distance between the highest obstacle and the radar, unit: kilometers.

6. The method for optimizing the minimum radar guidance altitude of a radar control sector according to claim 1, characterized in that: In S6, the farthest distance from the radar is determined as follows: D max : With the radar as the center of the coordinate point, assuming that the analysis sector has n' boundary points, the distances of each sector boundary point from the radar are calculated as |CS1|, |CS2|, |CS3|…|CSn'|, and the distance of the sector boundary farthest from the radar is calculated based on each distance. D max , D max =max(|CS1|, |CS2|, |CS3|...|CSn'|).

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