Look4Sat-rt-bishop/app/src/main/res/layout/fragment_radar.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:keepScreenOn="true">

    <androidx.cardview.widget.CardView
        android:id="@+id/radar_toolbar"
        style="@style/ToolbarCard"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <ImageButton
            android:id="@+id/radar_back"
            style="@style/ToolbarButton"
            android:layout_gravity="start|center_vertical"
            android:src="@drawable/ic_back" />

        <TextView
            android:id="@+id/radar_timer"
            style="@style/ToolbarTimer"
            android:layout_gravity="center" />

        <ImageButton
            android:id="@+id/radar_map"
            style="@style/ToolbarButton"
            android:layout_gravity="end|center_vertical"
            android:src="@drawable/ic_world" />

    </androidx.cardview.widget.CardView>

    <TextView
        android:id="@+id/radar_name"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="2dp"
        android:layout_marginEnd="8dp"
        android:gravity="center"
        android:includeFontPadding="false"
        android:textSize="@dimen/text_size_medium"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/radar_toolbar" />

    <androidx.cardview.widget.CardView
        android:id="@+id/radar_card"
        style="@style/SurfaceCard"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="2dp"
        android:layout_marginEnd="8dp"
        app:layout_constraintDimensionRatio="1:1"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/radar_name" />

    <TextView
        android:id="@+id/radar_az"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="4dp"
        android:layout_marginTop="4dp"
        android:text="@string/pat_azimuth"
        android:textSize="@dimen/text_size_small"
        app:layout_constraintStart_toStartOf="@+id/radar_card"
        app:layout_constraintTop_toTopOf="@+id/radar_card" />

    <TextView
        android:id="@+id/radar_el"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="4dp"
        android:layout_marginEnd="4dp"
        android:text="@string/pat_elevation"
        android:textSize="@dimen/text_size_small"
        app:layout_constraintEnd_toEndOf="@+id/radar_card"
        app:layout_constraintTop_toTopOf="@+id/radar_card" />

    <TextView
        android:id="@+id/radar_alt"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="4dp"
        android:layout_marginBottom="4dp"
        android:text="@string/pat_altitude"
        android:textSize="@dimen/text_size_small"
        app:layout_constraintBottom_toBottomOf="@+id/radar_card"
        app:layout_constraintStart_toStartOf="@+id/radar_card" />

    <TextView
        android:id="@+id/radar_dst"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="4dp"
        android:layout_marginBottom="4dp"
        android:text="@string/pat_distance"
        android:textSize="@dimen/text_size_small"
        app:layout_constraintBottom_toBottomOf="@+id/radar_card"
        app:layout_constraintEnd_toEndOf="@+id/radar_card" />

    <androidx.cardview.widget.CardView
        android:id="@+id/radar_list_card"
        style="@style/SurfaceCard"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="2dp"
        android:layout_marginEnd="8dp"
        android:layout_marginBottom="8dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/radar_recycler_msg">

        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/radar_recycler"
            style="@style/AppRecycler"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

    </androidx.cardview.widget.CardView>

    <TextView
        android:id="@+id/radar_recycler_msg"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="2dp"
        android:layout_marginEnd="8dp"
        android:gravity="center"
        android:includeFontPadding="false"
        android:text="@string/trans_no_data"
        android:textSize="@dimen/text_size_medium"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/radar_card" />

</androidx.constraintlayout.widget.ConstraintLayout>