diff --git a/src/pages/SAT/fns/demo.ts b/src/pages/SAT/fns/demo.ts
index 80618ef..dda5f20 100644
--- a/src/pages/SAT/fns/demo.ts
+++ b/src/pages/SAT/fns/demo.ts
@@ -118,7 +118,8 @@ export async function demoOrbitGeneration(viewer: Viewer) {
   });
 
   const issDataSource = new SpaceCatalogDataSource({ name: 'issSource' });
-  issDataSource.entities.add(ISS);
+  Object.assign(window, { issDataSource });
+  issDataSource.entities.add(ISS); // FIXME: add后有问题。
   await viewer.dataSources.add(issDataSource);
 
   // await new Promise((_r) => setTimeout(_r, 1000));
diff --git a/src/pages/SAT/index.page.vue b/src/pages/SAT/index.page.vue
index e7f2c5a..93a912f 100644
--- a/src/pages/SAT/index.page.vue
+++ b/src/pages/SAT/index.page.vue
@@ -4,7 +4,7 @@ import CesiumViewer from './CesiumViewer.vue';
 const $datatableShow = ref(false);
 
 // @ts-expect-error https://digitalarsenal.io/Widgets/InfoBox/InfoBoxDescription.css
-globalThis.CESIUM_BASE_URL = 'http://digitalarsenal.io/';
+globalThis.CESIUM_BASE_URL = 'https://digitalarsenal.io/';
 </script>
 
 <template>