小程序雷达扫描效果及布局

Question

设计稿截图如上所示，头一次在小程序中写这种效果。也找了一些css的demo，担心在小程序中会有兼容性的bug，特来请教一番。有没有哪位同行做过同样的效果，或者提供下可行性的方案、思路都可以~

wxml:

<view class="container">
  <view class="radar"></view>
</view>

wxss:

.radar {
  background: -webkit-radial-gradient(center, rgba(32, 255, 77, 0.3) 0%, rgba(32, 255, 77, 0) 75%), -webkit-repeating-radial-gradient(rgba(32, 255, 77, 0) 5.8%, rgba(32, 255, 77, 0) 18%, #20ff4d 18.6%, rgba(32, 255, 77, 0) 18.9%), -webkit-linear-gradient(90deg, rgba(32, 255, 77, 0) 49.5%, #20ff4d 50%, #20ff4d 50%, rgba(32, 255, 77, 0) 50.2%), -webkit-linear-gradient(0deg, rgba(32, 255, 77, 0) 49.5%, #20ff4d 50%, #20ff4d 50%, rgba(32, 255, 77, 0) 50.2%);
  background: radial-gradient(center, rgba(32, 255, 77, 0.3) 0%, rgba(32, 255, 77, 0) 75%), repeating-radial-gradient(rgba(32, 255, 77, 0) 5.8%, rgba(32, 255, 77, 0) 18%, #20ff4d 18.6%, rgba(32, 255, 77, 0) 18.9%), linear-gradient(90deg, rgba(32, 255, 77, 0) 49.5%, #20ff4d 50%, #20ff4d 50%, rgba(32, 255, 77, 0) 50.2%), linear-gradient(0deg, rgba(32, 255, 77, 0) 49.5%, #20ff4d 50%, #20ff4d 50%, rgba(32, 255, 77, 0) 50.2%);
  width: 75vw;
  height: 75vw;
  max-height: 75vh;
  max-width: 75vh;
  position: relative;
  top: 50%;
  border-radius: 50%;
  border: 0.2rem solid #20ff4d;
  overflow: hidden;
}
.radar:after {
  content: ' ';
  display: block;
  background-image: linear-gradient(44deg, rgba(0, 255, 51, 0) 50%, #00ff33 100%);
  width: 50%;
  height: 50%;
  position: absolute;
  top: 0;
  left: 0;
  animation: radar-beam 5s infinite;
  animation-timing-function: linear;
  transform-origin: bottom right;
  border-radius: 100% 0 0 0;
}

@keyframes radar-beam {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
@keyframes blips {
  14% {
    background: radial-gradient(2vmin circle at 75% 70%, #ffffff 10%, #20ff4d 30%, rgba(255, 255, 255, 0) 100%);
  }
  14.0002% {
    background: radial-gradient(2vmin circle at 75% 70%, #ffffff 10%, #20ff4d 30%, rgba(255, 255, 255, 0) 100%), radial-gradient(2vmin circle at 63% 72%, #ffffff 10%, #20ff4d 30%, rgba(255, 255, 255, 0) 100%);
  }
  25% {
    background: radial-gradient(2vmin circle at 75% 70%, #ffffff 10%, #20ff4d 30%, rgba(255, 255, 255, 0) 100%), radial-gradient(2vmin circle at 63% 72%, #ffffff 10%, #20ff4d 30%, rgba(255, 255, 255, 0) 100%), radial-gradient(2vmin circle at 56% 86%, #ffffff 10%, #20ff4d 30%, rgba(255, 255, 255, 0) 100%);
  }
  26% {
    background: radial-gradient(2vmin circle at 75% 70%, #ffffff 10%, #20ff4d 30%, rgba(255, 255, 255, 0) 100%), radial-gradient(2vmin circle at 63% 72%, #ffffff 10%, #20ff4d 30%, rgba(255, 255, 255, 0) 100%), radial-gradient(2vmin circle at 56% 86%, #ffffff 10%, #20ff4d 30%, rgba(255, 255, 255, 0) 100%);
    opacity: 1;
  }
  100% {
    background: radial-gradient(2vmin circle at 75% 70%, #ffffff 10%, #20ff4d 30%, rgba(255, 255, 255, 0) 100%), radial-gradient(2vmin circle at 63% 72%, #ffffff 10%, #20ff4d 30%, rgba(255, 255, 255, 0) 100%), radial-gradient(2vmin circle at 56% 86%, #ffffff 10%, #20ff4d 30%, rgba(255, 255, 255, 0) 100%);
    opacity: 0;
  }
}

以上代码都是百度所得，效果如下：

问题阐述：
1、设计图中雷达外部的波浪线如何静态绘制？
2、雷达扫描到的人物信息采用定位后是否可以对显示顺序加以延迟处理？

之前只是自己写过一些简单的demo，正式开发小程序经验不足，还望各位见谅~

Answer 1

1、可以用canvas画圆，比较容易实现
2、可以。 个人思路是：利用定时器在指定时间内往渲染数据的数组中追加数据就行了