A TRACON controller reported they may have observed a false radar target on their display.

Attributes
ACN	1633031
Time
Date	201904
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.TRACON
State Reference	GA
Aircraft 1
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Route In Use	VFR Route
Person 1
Function	Approach
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 18.0
Events
Anomaly	ATC Issue All Types Deviation - Procedural Other / Unknown

Narrative:

A target appeared on a 7700 code on track for ZZZ at 3;500 [feet]. At [the] same time; a satellite sector had an emergency inbound to ZZZ1 from east on 7700 code. Targets appeared to mimic each other on speed and altitude until the emergency aircraft turned final at ZZZ1. It appears we had a ghost target. I was in fused mode. We need to see if it was a ghost target off one of the radar sites we use for fusion.

Original NASA ASRS Text

Title: A TRACON Controller reported they may have observed a false radar target on their display.

Narrative: A target appeared on a 7700 code on track for ZZZ at 3;500 [feet]. At [the] same time; a Satellite Sector had an emergency inbound to ZZZ1 from east on 7700 code. Targets appeared to mimic each other on speed and altitude until the emergency aircraft turned final at ZZZ1. It appears we had a ghost target. I was in fused mode. We need to see if it was a ghost target off one of the radar sites we use for fusion.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.