CreateRadarObject.cs

using UnityEngine;
using UnityEngine.UI;

public class CreateRadarObject : MonoBehaviour
{
    public Image image;

    private void Start()
    {
        Radar.RegisterRadarObject(this.gameObject, image);
    }

    private void OnDestroy()
    {
        Radar.RemoveRadarObject(this.gameObject);
    }
}