CN109581342A

CN109581342A - A kind of rotating phased array radar complete period time resource distribution method

Info

Publication number: CN109581342A
Application number: CN201811495674.8A
Authority: CN
Inventors: 李纪三; 耿利祥
Original assignee: 724th Research Institute of CSIC
Current assignee: 724th Research Institute of CSIC
Priority date: 2018-12-07
Filing date: 2018-12-07
Publication date: 2019-04-05
Anticipated expiration: 2038-12-07
Also published as: CN109581342B

Abstract

The invention proposes a kind of rotating phased array radar complete period time resource distribution methods, belong to the resource planning technology in complete period, in this period task execution, the total time that the tracking generic task of minute book periodic duty executes, when antenna crosses due north, according to the time of upper period tracking, the scan table in cost period in next life.It changes angle to say, it is a kind of delay compensation strategy that this period, which is compared to the tracking time that the period newly increases and the scan table of lower circle has been determined,.

Description

A kind of rotating phased array radar complete period time resource distribution method

Technical field

The invention belongs to regard radar resource scheduling field to maritime patrol based on phased array system.

Background technique

Big radar resource management and scheduling portion are the cores of phased array radar system, and effect is according to certain optimal standard Then, a kind of scheduling strategy is determined to dispatch Radar Task, effectively to distribute radar resource, reaches optimization radar overall performance Purpose, main task generation, task layout and the beam dispath for completing radar event.Once resident be scheduled of Radar Task is held Row cannot be then resident by other and interrupt, i.e., scheduling is non-preemptive.Common are dispatching algorithm based on time budget and Adaptive scheduling algorithm based on time window and task priority.

1, time budget scheduling method: time budget scheduling method is pre-designed the SC service ceiling of a resource to each task, When the resource use of this task or thread reaches limitation, then the request of this task is no longer responded, then executes other appoint Business, process are as follows: in scheduling interval start time t1, counting can executing at this moment for task, select highest priority Task execution, task residence time are d, and in t1+d, etching system is again idle, counts can executing at this moment for task, simultaneously The accounting for calculating the time resource that each generic task has consumed, select can with highest priority and time accounting be not above it is pre- The task execution of first setting ratio, the time elapses 1 unit backward if not can be performed for task this moment, counts the t1+d+1 moment Task, so circulation is gone down, until scheduling interval is booked.

2, the adaptive scheduling algorithm based on time window and task priority: A.G.Huizing did more function phases in 1996 Control the concept that Radar Task time window is proposed when the emulation of battle array radar resource.Using this time windows constraints, in design scheduling of resource It can flexible arrangement resource allocation when program.Time window concept be based on radar tracking working method, time window Concrete meaning be radar event the actual transmission time before and after desired launch time mobile effective range, if it exceeds when Between window range radar event be still not carried out, it is nonsensical recalling the radar event, then abandon dispatching the radar event. In this way, the event being much rejected because conflicting on the time can be dispatched by the arrangement of time window, to improve The utilization rate of time.

Sector task schedule, this scheduling interval is interior to be ranked up according to priority, and the task of high priority first carries out, low excellent The task of first grade is rejected in the case where time resource is not enough.Scheduling for the radar of stationary plane battle array, in task time In window, the task of the task execution of high priority, low priority is delayed by.Its implementation process is as follows: according to radar closed procedure Required time determines scheduling interval, from scan list, tracking list and postpones to take out this interval times to be executed in list Business, from high to low according to priority, according to desired emission time layout wave beam；It is every to have arranged a wave beam, while between minute book Every interior aperture time section；Next task is taken out from task list, can judgement under time windows constraints in some free time Between execute in section；All sequence lists that launching beam after the task in this interval, can be obtained have been arranged, have then been reset Previous wave beam is introduced execution moment of the moment as next wave beam, time fragment is squeezed by the emission time of each wave beam Fall；At the beginning of the last one interior task finish time of this interval is as next scheduling interval.

Two kinds of algorithm comparisons:

Time budget method (TBS) is to lay particular emphasis on the mission planning and time resource distribution of macroscopic view, and based on time window and excellent The adaptive scheduling algorithm of first grade biases toward microcosmic dwell schedule or referred to as wave beam layout.

Time budget method (TBS) has focused on the distribution of time resource between task, can guarantee that the task of low priority also has The corresponding time executes.Especially when radar work encounters false target jamming profile, the priority of target following task is higher than search The priority of task, therefore will cause the task saturation and overload of radar.Time budget method can guarantee the reserved regular hour For searching for.The disadvantage is that processing, in the task for many high priorities that happen suddenly on some period, the task of high priority can quilt It loses, since the task of the high priority on this period increased significantly, when scheduling proportionally can block to fall many high priorities Task.

Adaptive scheduling algorithm and time budget method based on time window and priority are exactly the opposite, and feature is to guarantee in short term The task of interior high priority is able to carry out, but mission planning and time resource distribution shortcoming on the period.The latter's algorithm be Put forward in laboratory simulations, many scholar had carried out follow-up study again later, but the unsuitable warning thunder of the algorithm It is actually used on up to equipment.Because usually warning search can be used as the task of low priority, the not limitation of time window, when with When the task of the high priorities such as track is more, the frame period of search can be increased, rather than task is given up to fall.

The shortcomings that sector is planned is that time resource utilization rate is not high, because pole when target tightening in a sector The time resource of the search of big distilled edition sector, the very little for causing distance to contract, and the sector beside this sector is not because have mesh Mark, warning distance is farther out.The resource of other sectors cannot be formulated to this sector.

Summary of the invention

The invention belongs to the resource planning technologies in complete period, and the purpose of the present invention is to solve in rotating phased array radar The not high problem of time resource utilization rate, solving on certain direction for task increase suddenly, and the task of low priority is caused to be deleted The problem of.

Concrete scheme of the invention is as follows: in this period task execution, the tracking generic task of minute book periodic duty is held Capable total time, when antenna crosses due north, according to the time of upper period tracking, the scan table in cost period in next life.Change an angle Degree says, it is a kind of delay compensation plan that this period, which is compared to the tracking time that the period newly increases and the scan table of lower circle has been determined, Slightly.Traditional algorithm and across period resource scheduling algorithm Contrast on effect are as shown in Figure 1.Task " long-range search 2 " in traditional algorithm Time resource is tied up in scheduling interval 1 by the tracing task of two higher priority, therefore is deleted.In modified hydrothermal process In, the free time in complete period can be brought and be used as tracking, therefore after two tracing tasks are scheduled, remain to execute " long-range search 2 ".

By the abundant verifying of field trial, the resource planning technology in complete period proposed by the present invention, compatible sector scheduling Whole circle planning technology, be enable to respond quickly the sector task that other subsystem systems are assigned, substantially increase time availability.

Detailed description of the invention

Fig. 1 complete period is planned and traditional adaptive algorithm Contrast on effect.

Fig. 2 periodic searches parameter product process figure.

The task layout process of Fig. 3 scheduling interval.

Specific embodiment

A kind of rotating phased array radar complete period time resource distribution method proposed by the present invention, specific implementation step is such as Under:

1. across the period resource planning method of rotating phased array radar is made of two big functions, first is that when this period starts The search parameter in the complete period of (when the normal direction of face battle array crosses due north) is determining, second is that when the interruption of each scheduling interval arrives, The wave beam of this scheduling interval of layout executes chained list.

2. the parameter in complete period determines, the sweep parameter in this period is determined according to working method and other manipulation commands Table, parameter generally include: orientation number, the elevation angle number, umber of pulse, multi-beam number, pulse processing aspects, pulse width, and pulse repeats Period, signal form, signal bandwidth, signal frequency point.Usually pre-designed scan table, then calculates distributing to for this period The time of search, according to the corresponding scan table of selection of time, detailed process is shown in Fig. 2.

3. the wave beam layout of each scheduling interval refers to the search mission and tracing task of this scheduling interval of layout.Search Task is from the search chained list in this period, according to the execution swept in last scheduling interval, such as in the scan table in this period 1000 search missions are shared, first scheduling interval has swept 50 tasks, that second scheduling interval is from the 51st task Start to execute.Tracing task refers to falling in this scheduling interval for task, and usual each scheduling interval corresponds to a scanning side Position section, if the orientation of the target of tracking falls in this section, tracing task is just executed in this scheduling interval, but is returned Confirmation is swept, one encloses interior High Data Rate tracking, and the lead of spotting scaming and hysteresis is needed to recalculate scheduling interval.If mesh 70 degree are marked in the orientation under geodetic coordinates, it is desirable to are scanned in advance to target for 30 degree, then 40 degree should be gone in antenna Layout is carried out to task when left and right, detailed process is shown in Fig. 3.

Claims

1. a kind of rotating phased array radar complete period time resource distribution method, it is characterised in that: generate 100ms using house dog Schedule Interrupt, interrupt arrive when reading antenna servo orientation, judge this servo orientation be less than last time servo orientation values, Show the total time that antenna crosses due north, and tracking generic task when antenna crosses due north according to upper circle is spent, the search in this period of budget Task time determines the search ginseng in this period each orientation according to the working method of the time budget of search mission and radar Number, and the resident Task-list for being added to search of search is generated, when each interruption arrives, searches and whether deposited in tracing task chained list The servo orientation values of this scheduling interval reading task in 18 degree backward is fallen in orientation, if there is then tracing task is added In the execution list at interval, while the time of tracing task cost is recorded, takes out task from the head in search mission chained list, add Enter to behind tracing task, after being added to the task of 100ms, completes the task layout of this scheduling interval.