A kind of mission planning method for moonscopeTechnical field
The present invention relates to moonscope technical field, more particularly to a kind of mission planning method for moonscope.
Background technology
In satellite earth observation imaging task, single satellite can not be complete in SEE time window once to target areaIt is large area target region into the target area of observation.In other words, single satellite is in earth week age, it is impossible to onceIt can be seen that completing the observation to large area target region in chance.Therefore need reasonably to divide large area region, so thatIt is multiple Meta tasks that can be completed by single satellite in once visible chance by Task-decomposing.
The region partitioning method for being presently used for moonscope is the static decomposition method using target area mostly, i.e., pre-Target area is first decomposed into multiple mutually disjoint zonules in a position-stable manner, point target is then regarded as again and is adjustedDegree.Wherein, the method for target area being resolved into satellite scan stripes band is that target area is decomposed into satellite scan stripes band in advanceCombination.Under such a static resolution model, if hot job is inserted into before the task or inserted when running the taskHot job is entered, has then needed to re-start above-mentioned mission planning, so as to reduce satellite utilization ratio.
The content of the invention
In order to solve the above technical problems, the present invention proposes a kind of mission planning method for moonscope, it includes：S10：Set a plurality of bearing of trend identical with the bearing of trend of the sub-satellite track of satellite and satellite across target area is sweptBand is retouched, target area is completely covered a plurality of satellite scan stripes band；S20：Satellite is along along a plurality of satellite scan stripes bandThe maximum satellite scan stripes band of one and target area overlapping area is shot to target area, by target area by satelliteThe part that scan stripes band is covered is removed from target area, regard its remainder as new target area；S30：Judge meshMark region has removed the area of part and whether the area ratio of initial target region reaches more than default coverage rate, if being more thanOr then stop equal to default coverage rate, otherwise carry out step S10.
In a specific embodiment, in step slo, a plurality of satellite scan stripes band is arranged side by side, and is located atThe side of outermost satellite scan stripes band with target area is more outermost overlaps.
In a specific embodiment, in step S20, if there is coverage goal region in a plurality of satellite scan stripes bandArea be all maximum more than two satellite scan stripes bands, choose side near one of target area edge.
In a specific embodiment, in step S20, in a plurality of satellite scan stripes band, wall scroll satellite scan stripesMaximum one of distance of the target area that is covered of band between two point farthest with distance on bearing of trend of satellite scan stripesIt is used as the satellite scan stripes band maximum with target area overlapping area.
In a specific embodiment, in step S20, before satellite is shot to target area, pair and targetOverlapping area maximum satellite scan stripes band in region is cut to cause satellite scan stripes band just coverage goal region.
In a specific embodiment, in step s 30, the area that target area has removed part is equal to each progressThe area sum of the target area part removed during step S20.
In a specific embodiment, default coverage rate span is 80%~100%.
In a specific embodiment, the step of mission planning method is implemented before being additionally included in step S10S01, S01：Forecast the satellite visible chance all to target area in following one section of preset time.
In a specific embodiment, the step of mission planning method is implemented before being additionally included in step S01S00, step S00：Target area edge is subjected to convexification processing, target area is become that the convex many of former target area are completely coveredSide shape region.
In a specific embodiment, in step slo, before a plurality of satellite scan stripes band is set, target is judgedRegion can be by the bearing of trend identical satellite scan stripes band institute of a bearing of trend and the sub-satellite track of the satellite completelyCovering, if can if satellite regional aim is shot according to this satellite scan stripes band, then stop；Otherwise, continue to completeRemaining steps in S10.
Task management and planning are carried out to target area using above-mentioned mission planning method, even if there is burst hot job to needWant priority treatment also only to need to suspend current task, handle and jumped to step S10 after hot job again and proceed when formerBusiness, without being planned again whole task again, without to all unfinished during especially in the presence of multiple this tasksTask is planned again, thus can preferably tackle burst hot job.In addition, satellite is overlapping with target area along oneThe maximum satellite scan stripes band of area, which shoot, can guarantee that the efficiency shot every time is maximized, so as to reduce task time, especiallyIt is the spaceborne energy electricity it is limited, be so scanned can reduce satellite energy resource consumption, extend satellite working time.TogetherWhen can also reduce the number of times of side-sway, reduce the time required for side-sway conversion, improve stability of the satellite in shooting, and thenImprove the precision of imaging.
Brief description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein：
Fig. 1 for the present invention a kind of embodiment in the mission planning method for moonscope flow chart；
Fig. 2 for the present invention a kind of embodiment in target area schematic diagram；
Fig. 3 for the present invention a kind of embodiment in the target area enclosed by rectangle schematic diagram；
Fig. 4 for the present invention a kind of embodiment in capped a plurality of satellite scan stripes band target area schematic diagram；
Fig. 5 for the present invention a kind of embodiment in new target area schematic diagram；
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not drawn according to actual ratio.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 shows a kind of mission planning method for moonscope in the present embodiment, and this method uses singleSatellite is observed to the target area 1 on ground, and it comprises the following steps：
S01：Forecast the satellite visible chance all to target area 1 in following one section of preset time.
Orbit prediction is carried out to satellite, SEE time of the satellite to target area 1 in following one section of preset time is obtainedWindow.The preset time generally user to complete task total period requirement within.Satellite is in SEE time windowIts remote sensor can carry out shooting at least one times across target area 1, satellite its remote sensor energy in multiple SEE time windowsPhotograph the complete image of target area 1.
S10：The extension side of a plurality of bearing of trend and sub-satellite track is arranged side by side according to the shooting ability of the satellite successivelyTo it is identical, be covered on target area 1 and across the satellite scan stripes band 3 of target area 1, a plurality of satellite scan stripes band 3 willTarget area 1 is completely covered.
Subpoint of the satellite on ground is referred to as substar, and satellite motion and earth rotation make substar move at the earth's surfaceForm sub-satellite track.Part of the sub-satellite track near target area 1 can approximately see in alignment.One square is setTarget area 1 is accommodated by shape 2, and a line of rectangle 2 is parallel to sub-satellite track, and the side of rectangle 2 just encloses targetRegion 1.It is more outermost in corresponding rectangle 2 on four direction corresponding to four edges of the target area 1 in rectangle 2Bian Shang.This four points are respectively satellite to the earliest visible point of target area 1, the maximum roll angles of visible point and two can the latestSee summit.Earliest visible point and the latest visible point are located at the orientation pointed by sub-satellite track two ends, two maximum rollings respectivelyThe visible summit in angle is located normal to two orientation of sub-satellite track respectively.
The generally rectangular strip of satellite scan stripes band 3.Satellite scan stripes band 3 is generally aligned in the same plane with target area 1.ClothA plurality of satellite scan stripes band 3 is put, the bearing of trend of satellite scan stripes band 3 is parallel with sub-satellite track.A plurality of satellite scan stripesBand 3 is arranged side by side, and two adjacent satellite scan stripes bands 3 connect.The width of wall scroll satellite scan stripes band 3 by satellite shooting energyPower is determined that the width of wall scroll satellite scan stripes band 3 is equal to the width that the satellite carries out the band of single pass to target area 1Degree, the width is mainly determined by the size of the angle of visual field of satellite.It will generally be surveyed in the maximum of satellite in the range of pendulum, with satelliteBreadth corresponding to angle of visual field size as satellite scan stripes band 3 width.A plurality of satellite scan stripes band 3 is complete by target area 1All standing.It is preferably located at the side of outermost satellite scan stripes band 3 and target area 1 is more outermost overlaps,The quantity of the satellite scan stripes band 3 in the step can be so reduced as far as possible, so as to reduce amount of calculation.Satellite scan stripes band 3The edge of target area 1 is extended or flushed at two ends, or to extend the edge of target area 1, the other end concordant for one endEdge in target area 1.Any point on the end of satellite scan stripes band 3 is not within the edge of target area 1.At thisIn embodiment, relative with rectangle 2 two sides are concordant respectively for the two ends of a plurality of satellite scan stripes band 3, can so simplify calculating, subtractFew amount of calculation.
S20：Satellite is scanned along one in a plurality of satellite scan stripes band 3 with the maximum satellite of the overlapping area of target area 1Band 3a is shot to target area 1, and by the part covered in the target area 1 by satellite scan stripes with 3a from targetRemoved in region 1, regard its remainder as new target area 4.
Satellite is scanned along the maximum satellite scan stripes band 3a of one and the overlapping area of target area 1 can guarantee that and sweep every timeThe efficiency retouched is maximized, so as to reduce task time, the electricity of the especially spaceborne energy is limited, is so scanned to reduce and defendsThe energy resource consumption of star, the working time for extending satellite.If there is the area in coverage goal region 1 in these satellite scan stripes bands 3Be all maximum more than two satellite scan stripes bands, then choose it is therein any one.Preferably, if a plurality of satellite scan stripesIt is all maximum more than two satellite scan stripes bands with the area that there is coverage goal region 1 in 3, chooses side near meshMark the edge of region 1 one.The degree of crushing of newly-generated target area 1 can be so reduced as far as possible, so as to reduce amount of calculation.Preferably, in a plurality of satellite scan stripes band 3, the target area 1 that wall scroll satellite scan stripes band 3 is covered is in satellite scan stripes bandMaximum one of distance is farthest on 3 bearing of trends the distance between 2 points as with the overlapping area of target area 1 is maximum defendsStar scan stripes band 3a.Mutual distance is farthest in the target area 1 that wall scroll scan stripes band is covered 2 points are usually this part meshThe two ends in region 1 are marked respectively near the point at the two ends of satellite scan stripes band 3, take in these satellite scan stripes bands 3 this 2 points away fromThe satellite scan stripes band 3a maximum with the overlapping area of target area 1 is used as from maximum one.Any bar thus enormously simplifyThe area for the target area 1 that satellite scan stripes band is covered is maximum judgement.
Preferably, before satellite is shot, satellite scan stripes band 3a is cut to cause satellite scan stripes band 3aJust coverage goal region 1.This allows for the part phase of target area 1 that two ends of the satellite scan stripes with 3a are covered with it respectivelyTo two ends it is more outermost concordant.Can use dichotomy to cutting of the satellite scan stripes with 3a two ends redundancy sectionJudge whether satellite scan stripes band 3a intersects with target area 1, satellite scan stripes band 3a is removed if intersecting and exceeds target area 1Redundancy section in addition.It so can further improve the utilization ratio of satellite resource.
By the part covered in the target area 1 by satellite scan stripes with 3a from target area 1, by its remainderIt is allocated as new target area 4.
S30：Judge target area 1 removed the area of part whether reached with the area ratio of initial target region 1 it is pre-If coverage rate more than, if more than or equal to stopping if default coverage rate, otherwise carry out step S10.
Union is asked to obtain satellite scanning with the region that 3a is covered the satellite scan stripes selected by progress step S20 every timeThe overall area of band 3a coverings, the overall area and initial target region 1 are sought common ground and obtain the area that target area 1 has removed partDomain, the ratio between the region occupied area and prime area occupied area is compared with default coverage rate, if being more than or equal toDefault coverage rate then stops.Preferably, gone when target area 1 has removed the area of part equal to progress step S20 every timeThe area sum for the part of target area 1 removed.So calculate easier.Coverage rate represents what the observation station of target area 1 was obtainedThe integrity degree requirement of image, not all task is required absolutely all observes that this is default by target area 1Coverage rate in single task to the minimum requirements of the integrity degree of image obtained.Default coverage rate span is preferredFor 80%~100%, such IMAQ is more complete.Need to proceed collection if minimum requirements is not reached, enterIn step S10.
When being observed in this way to target area 1, even if there is burst hot job to need priority treatment also onlyCurrent task need to be suspended, handled and jumped to step S10 after hot job again and proceed current task, without again to wholeIndividual task is planned again, thus can preferably tackle burst hot job.Especially, burst hot job is inserted intoWhen before the task, had no effect to completing task using this method.
Preferably, before step S01 is carried out, step S00 is first carried out.Step S00：Target area edge is subjected to convexificationProcessing, makes target area become Convex Polygon Domain, former target area is completely covered in Convex Polygon Domain.So it is more convenient for follow-upTo the calculating of area of the satellite scan stripes with 3a in step, simplify amount of calculation.
Preferably, in step slo, before a plurality of satellite scan stripes band is set, judge that can target area by oneThe bearing of trend identical satellite scan stripes band of bearing of trend and the sub-satellite track of the satellite is completely covered, if can if satelliteRegional aim is shot according to this satellite scan stripes band, then stopped；Otherwise, continue to set a plurality of satellite scan stripesBand, completes the remaining steps in S10.When target area newly-generated in step S30 can be only by a satellite scan stripes band instituteDuring covering, covered according to the satellite scan stripes band and complete task, without continuing to set a plurality of satellite scan stripes bandAnd therefrom chosen.
Although by reference to preferred embodiment, invention has been described, is not departing from the situation of the scope of the present inventionUnder, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, as long as in the absence of structure punchingProminent, the every technical characteristic being previously mentioned in each embodiment can combine in any way.The invention is not limited in textDisclosed in specific embodiment, but all technical schemes including falling within the scope of the appended claims.