More slide updates

1 files changed, 43 insertions, 57 deletions

diff --git a/talk.ipynb b/talk.ipynb
index 0642d5d..de496ab 100644
--- a/talk.ipynb
+++ b/talk.ipynb
@@ -70,7 +70,18 @@
    "source": [
     "## Radio Waves\n",
     "\n",
-    "![static/dipole.gif](static/dipole.gif)\n"
+    "![static/dipole.gif](static/dipole.gif)\n",
+    "\n",
+    "*Source: https://en.wikipedia.org/wiki/Antenna_(radio)*\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Hardware Radio\n",
+    "\n",
+    "![static/radio.jpg](static/radio.jpg)"
    ]
   },
   {
@@ -81,14 +92,18 @@
     }
    },
    "source": [
-    "## RTL-SDR\n",
+    "## Software-Defined Radio\n",
     "\n",
     "![rtlsdr.jpg](static/rtlsdr.jpg)"
    ]
   },
   {
    "cell_type": "markdown",
-   "metadata": {},
+   "metadata": {
+    "slideshow": {
+     "slide_type": "subslide"
+    }
+   },
    "source": [
     "## What's it good for\n",
     "\n",
@@ -103,13 +118,13 @@
    "cell_type": "markdown",
    "metadata": {
     "slideshow": {
-     "slide_type": "slide"
+     "slide_type": "subslide"
     }
    },
    "source": [
-    "# I/Q Sampling\n",
+    "## Airplane Location Tracking (ADSB)\n",
     "\n",
-    "![static/cosample.png](static/cosample.png)"
+    "![static/adsb.png](static/adsb.png)"
    ]
   },
   {
@@ -120,98 +135,69 @@
     }
    },
    "source": [
-    "## I/Q Sampling\n",
+    "## Weather Satellites\n",
     "\n",
-    "![static/corkscrew.png](static/corkscrew.png)"
+    "![static/noaa.jpg](static/noaa.jpg)"
    ]
   },
   {
    "cell_type": "markdown",
    "metadata": {
     "slideshow": {
-     "slide_type": "slide"
+     "slide_type": "subslide"
     }
    },
    "source": [
-    "## Modulations\n",
+    "## Internet of Things\n",
+    "\n",
+    "![static/iot.jpg](static/iot.jpg)\n",
     "\n",
-    "![static/amfm2.gif](static/amfm2.gif)"
+    "*Source: https://blog.hackster.io/iot-devices-may-be-susceptible-to-replay-attacks-with-a-raspberry-pi-and-rtl-sdr-dongle-de6eca268fbf*"
    ]
   },
   {
-   "cell_type": "code",
-   "execution_count": null,
+   "cell_type": "markdown",
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
     }
    },
-   "outputs": [],
    "source": [
-    "import numpy as np\n",
-    "import matplotlib.pyplot as plt"
+    "# I/Q Sampling\n",
+    "\n",
+    "![static/cosample.png](static/cosample.png)\n",
+    "\n",
+    "*Source: http://whiteboard.ping.se/SDR/IQ*"
    ]
   },
   {
-   "cell_type": "code",
-   "execution_count": null,
+   "cell_type": "markdown",
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
     }
    },
-   "outputs": [],
    "source": [
-    "modulator_frequency = 4.0\n",
-    "carrier_frequency = 40.0\n",
-    "modulation_index = 1.0\n",
-    "size = 44100.0 * 2\n",
-    "\n",
-    "time = np.arange(size) / size\n",
-    "modulator = np.sin(2.0 * np.pi * modulator_frequency * time) * modulation_index\n",
-    "carrier = np.sin(2.0 * np.pi * carrier_frequency * time)\n",
+    "## I/Q Sampling\n",
     "\n",
-    "product = np.zeros_like(modulator)\n",
-    "for i, t in enumerate(time):\n",
-    "    product[i] = np.sin(2. * np.pi * (carrier_frequency * t + modulator[i]))\n",
+    "![static/corkscrew.png](static/corkscrew.png)\n",
     "\n",
-    "modulator = np.sin(2.0 * np.pi * modulator_frequency * time) * modulation_index\n",
-    "amp = np.zeros_like(modulator)\n",
-    "for i, t in enumerate(time):\n",
-    "    amp[i] = np.sin(2. * np.pi * (carrier_frequency * t * modulator[i]))"
+    "*Source: http://whiteboard.ping.se/SDR/IQ*"
    ]
   },
   {
-   "cell_type": "code",
-   "execution_count": null,
+   "cell_type": "markdown",
    "metadata": {
     "slideshow": {
-     "slide_type": "subslide"
+     "slide_type": "slide"
     }
    },
-   "outputs": [],
    "source": [
-    "plt.subplot(4, 1, 1)\n",
-    "plt.title('Frequency Modulation')\n",
-    "plt.plot(modulator)\n",
-    "plt.ylabel('Amplitude')\n",
-    "plt.xlabel('Modulator signal')\n",
-    "\n",
-    "plt.subplot(4, 1, 2)\n",
-    "plt.plot(carrier)\n",
-    "plt.ylabel('Amplitude')\n",
-    "plt.xlabel('Carrier signal')\n",
+    "## Modulations\n",
     "\n",
-    "plt.subplot(4, 1, 3)\n",
-    "plt.plot(product)\n",
-    "plt.ylabel('Amplitude')\n",
-    "plt.xlabel('Output signal')\n",
+    "![static/amfm2.gif](static/amfm2.gif)\n",
     "\n",
-    "plt.subplot(4, 1, 4)\n",
-    "plt.plot(modulator * carrier)\n",
-    "plt.ylabel('Amplitude')\n",
-    "plt.xlabel('Output signal')\n",
-    "plt.show()"
+    "*Source: http://mriquestions.com/signal-squiggles.html*"
    ]
   },
   {