Docs: Lidar 128 document + update to HW guides (#2238)

* Docs: HW update for Apollo 3.5

* DOCS: Camera specs update

docs/specs/Camera/Leopard_Camera_LI-USB30-AZ023WDR__Installation_Guide.md

-## Guide for LI-USB30-AZ023WDRB
+# Guide for LI-USB30-AZ023WDRB
 
 The cameras used are LI-USB30-AR023ZWDR with standard USB 3.0 case manufactured by Leopard Imaging Inc. This line of product is based on AZ023Z 1080P sensor and AP0202 ISP from ON Semiconductor. It supports external trigger and software trigger. 
 
@@ -8,7 +8,7 @@ We recommend using two cameras with 6 mm lens and one with 25 mm lens to achieve
 
 This camera can be connected to the IPC through USB 3.0 cable for power and data communication. External trigger signal can be sent into the camera via the HR25-7TP-8P(72) connector. A firmware change would also be needed to enable external trigger. For more detail on external triggers, please contact Leopard Imaging Inc. for more instructions.
 
-### Reference
+## Reference
 
 You can find additional information regarding the Leopard Imaging Inc. cameras on their [website](https://leopardimaging.com/product/li-usb30-ar023zwdrb/)
 

docs/specs/Camera/Leopard_Camera_LI-USB30-AZ023WDR__Installation_Guide_cn.md

-## LI-USB30-AZ023WDRB指南
+# LI-USB30-AZ023WDRB指南
 
 摄像头LI-USB30-AR023ZWDR采用标准USB 3.0。由Leopard Imaging Inc.制造。该系列产品基于AZ023Z 1080P传感器和安森美半导体的AP0202 ISP。它支持外部触发和软件触发。 
 
@@ -8,7 +8,7 @@
 
 该摄像头可通过USB 3.0电缆连接到IPC，用于电源和数据通信。外部触发信号可通过HR25-7TP-8P（72）连接器发送到摄像头。固件也需要更改以启用外部触发。有关外部触发器的更多详细信息，请联系Leopard Imaging Inc.获取更多说明。
 
-### 参考资料
+## 参考资料
 
 您可以在其[官网](https://leopardimaging.com/product/li-usb30-ar023zwdrb/)上找到有关Leopard Imaging Inc.摄像头的更多信息
 

docs/specs/Camera/Truly_Argus_Camera_Installation_Guide.md

-## Guide for Argus Camera
+# Guide for Argus Camera
 
 Argus camera is a joint development venture product of Truly Seminconductors Itd. and Baidu. The Argus camera features high dynamic range (HDR 120dB), internal/external trigger and OTA firmware update. It is well supported by the Apollo Sensor Unit. This line of product is based on AR230 1080P sensor and AP0202 ISP from ON Semiconductor. 
 
@@ -8,6 +8,10 @@ We recommend using ```three cameras```, two with **6 mm** lens and one with **25
 
 This camera can be connected to the Apollo Sensor Unit via the FAKRA connector for data transfer, trigger and OTA firmware update.
 
+## Product specifications
+
+![specs_image](images/Argus_specs1.png)
+
 ## Disclaimer
 
-This device is `Apollo Hardware Development Platform Supported`
\ No newline at end of file
+This device is `Apollo Platform Supported`
\ No newline at end of file

docs/specs/Camera/Truly_Argus_Camera_Installation_Guide_cn.md

@@ -8,6 +8,9 @@ Argus摄像头是由Truly Seminconductors Itd和百度联合投资开发的产
 
 该摄像机可通过FAKRA连接器连接到Apollo传感器单元，以进行数据传输、触发和OTA固件更新。
 
-## 免责声明
+## 产品规格
+
+![specs_image](images/Argus_specs.png)
 
-该设备由`Apollo硬件开发平台提供支持`
\ No newline at end of file
+## 免责声明
+该设备由`Apollo平台提供支持`
\ No newline at end of file

docs/specs/Camera/Wissen_Camera_Installation_Guide.md

-## Guide for Wissen Camera
+# Guide for Wissen Camera
 
 Wissen's camera is a joint development venture product of Wissen Technologies and Baidu. This line of camera features high dynamic range (HDR 120dB), internal/external trigger and OTA firmware update. It is well supported by the Apollo Sensor Unit. This line of product is based on AR230 sensor (1080P) and AP0202 ISP from ON Semiconductor. 
 

docs/specs/Camera/Wissen_Camera_Installation_Guide_cn.md

-## Wissen摄像头指南
+# Wissen摄像头指南
 
 Wissen摄像头是Wissen Technologies和百度的联合投资开发的产品。该系列相机具有高动态范围（HDR 120dB），内部/外部触发和OTA固件更新。它能很好的匹配Apollo传感器单元。该系列产品基于安森美半导体的AR230传感器（1080P）和AP0202 ISP。 
 

docs/specs/Lidar/VLS_128_Installation_Guide.md

+# Installation guide of Velodyne VLS-128
+
+Apollo 3.5 uses the latest 128 line LiDAR system **VLS-128** from Velodyne LiDAR, Inc.
+
+![](images/vls_128.png)
+
+## Key Features:
+
+- 360° Horizontal FOV
+- +15° to -25° Vertical FOV
+- Up to 300m Range
+- Minimum Angular Resolution: 0.11°
+- Up to 4 Return Modes
+- Up to ~9.6 Million Points per Second
+- Environmental Protection: IP67
+- Connectors: RJ45 / M12
+- High Volume, Automotive Grade Contract Pricing
+
+
+## Mounting
+
+A customized mounting structure is required to successfully mount an VLS-128 LiDAR on top of a vehicle. This structure must provide rigid support to the LiDAR system while raising the LiDAR to a certain height above the ground under driving conditions. This mounted height should prevent the laser beams from the LiDAR being blocked by the front and/or rear of the vehicle. The actual height needed for the LiDAR depends on the design of the vehicle and the mounting point of the LiDAR is relative to the vehicle being used. The LiDAR must be mounted straight without tilting. 
+For a standard Lincoln MKZ, it is recommended that you mount the LiDAR at a minimum height of **1.8 meters** (from ground to the base of the LiDAR), to use the angle range for detection effectively.
+
+```
+If for some reason, the LiDAR beam has to be blocked by the vehicle, it might be necessary to apply a filter to remove these points while processing the data received.
+```
+
+## Wiring
+
+Each VLS-128 LiDAR includes a cable bundle to connect the LiDAR to the power supply, and the GPS timesync source.
+
+![](images/power_cable.jpg)
+
+* **Connecting the LiDAR**
+
+   Connect the power and signal cable to the matching ports on the LiDAR
+
+   ![](images/Connectors.jpg)
+
+## References
+
+For additional information on Velodyne VLS-128, please refer to their 
+[website here](https://velodynelidar.com/vls-128.html).
+
+## Disclaimer
+
+This device is `Apollo Platform Supported`
+