isScanDone

R2026b

Determine if the current scan frame is complete

Since R2026b

Syntax

t_f = isScanDone(scanner)

Description

t_f = isScanDone(scanner) returns a value of true if the radar scan controller object scanner has completed a full scan frame, and false otherwise. A scan is marked done after the entire surveillance region has been scanned.

Examples

Advance Scan Position and Update Properties

Create an electronic raster scan controller object with default values.

txScnr = radarScanController("Electronic","Raster")

txScnr = 
  ElectronicRasterScanner with properties:

      AzimuthLimits: [-90 90]
    ElevationLimits: [-5 5]
       ScanDuration: 1
          StepAngle: 1
            NumBars: 2
          Alignment: "Azimuth"
    DwellTimeSource: "Auto"
          ScanAngle: [-90 -5]
           ScanTime: 0

Advance the scan position to a time of 10 seconds and return the corresponding scan angle.

txAng = scan(txScnr,10)

txAng = 1×2

   -90    -5

Check to see if the current scan frame is complete.

isDone = isScanDone(txScnr)

isDone = logical
   0

Check to see if the object is locked.

t_f = isLocked(txScnr)

t_f = logical
   1

Release the scan controller object.

release(txScnr);

Update the scan duration to be 1/2 the current duration.

txScnr.ScanDuration = txScnr.ScanDuration/2

txScnr = 
  ElectronicRasterScanner with properties:

      AzimuthLimits: [-90 90]
    ElevationLimits: [-5 5]
       ScanDuration: 0.5000
          StepAngle: 1
            NumBars: 2
          Alignment: "Azimuth"
    DwellTimeSource: "Auto"
          ScanAngle: [-90 -5]
           ScanTime: 10

Input Arguments

scanner — Scan controller object

scan controller object

Scan controller object (MechanicalRasterScanner, MechanicalSectorScanner, ElectronicRasterScanner, or ElectronicSectorScanner) generated by radarScanController.

Output Arguments

t_f — Logical indicator of locked status

true | false

Returns as true if the radar scan controller object has completed a full scan frame, and false otherwise. A scan is marked done after the entire mechanical or electronic surveillance region has been scanned.

• MechanicalRasterScanner or MechanicalSectorScanner - Returns true for the first scan time in a new scan duration and for the return duration when ScanReset is set to "Return".

• ElectronicRasterScanner or ElectronicSectorScanner - Returns true for the first scan time in a new scan duration.

Version History

Introduced in R2026b