diff --git a/src/main/java/com/telpo/dipperposition/common/SocketClient.java b/src/main/java/com/telpo/dipperposition/common/SocketClient.java
index ebc3e5e..3dc7473 100644
--- a/src/main/java/com/telpo/dipperposition/common/SocketClient.java
+++ b/src/main/java/com/telpo/dipperposition/common/SocketClient.java
@@ -38,7 +38,7 @@ public class SocketClient {
     }
 
 
-    public String sendCmd(String astCmd, String ackAckCheckRef) {
+    public byte[] sendCmd(String astCmd, String ackAckCheckRef) {
         try {
             OutputStream os=socket.getOutputStream();
             PrintWriter pw=new PrintWriter(os);
@@ -80,7 +80,7 @@ public class SocketClient {
             os.close();
             //log.debug(ackResult);
             log.debug("接收服务器的信息："+in2b.toString());
-            return in2b.toString();
+            return in2b;
         } catch (IOException e) {
             log.error("Socket sendCmd Error:" + e.getMessage());
             return null;
diff --git a/src/main/java/com/telpo/dipperposition/handler/NettyServerHandler.java b/src/main/java/com/telpo/dipperposition/handler/NettyServerHandler.java
index 8c38627..193a9ca 100644
--- a/src/main/java/com/telpo/dipperposition/handler/NettyServerHandler.java
+++ b/src/main/java/com/telpo/dipperposition/handler/NettyServerHandler.java
@@ -116,10 +116,12 @@ public class NettyServerHandler extends ChannelInboundHandlerAdapter {
         // 返回时间指令
         //if (Integer.parseInt(timeAsycServerPort) == channel.localAddress().getPort()) {
         ByteBuf recvmg = (ByteBuf) msg;
+        ByteBuf buf = null;
         String recvmgStr = recvmg.toString();
         if (AST_TIME_CMD.equals(recvmg)) {
             // 初始时间辅助输入;
             channelAns = dipperTimeAsyncTaskService.pushAstTime();
+            buf = Unpooled.buffer(channelAns.getBytes().length);
         }
 
         // 发送SDBP-AST-POS获取辅助位置信息
@@ -131,12 +133,14 @@ public class NettyServerHandler extends ChannelInboundHandlerAdapter {
                     centerProvince,
                     ipPositionRequestPath,
                     ipPositionRequestKey);
+            buf = Unpooled.buffer(channelAns.getBytes().length);
         }
 
         // 从缓存获取SDBP-AST-EPH星历数
         //if (Integer.parseInt(starsAsycServerPort) == channel.localAddress().getPort()) {
         if (AST_POS_CMD.equals(recvmg)) {
-            channelAns = dipperDataAsyncTaskService.getAstEPH();
+            byte[] astEPHBytes = dipperDataAsyncTaskService.getAstEPH();
+            buf = Unpooled.buffer(astEPHBytes.length);
         }
 
 
@@ -144,7 +148,6 @@ public class NettyServerHandler extends ChannelInboundHandlerAdapter {
         // 设备采用16进制获取数据，则代理服务器也是采用16进制返回数据。
         // 通知客户端链消息发送成功
         // String str = "服务端收到：" + LocalDateTime.now() + " " + msg + "\r\n";
-        ByteBuf buf = Unpooled.buffer(channelAns.getBytes().length);
         buf.writeBytes(channelAns.getBytes("GBK"));
         ctx.writeAndFlush(buf);
         //ctx.write("你也好哦");
diff --git a/src/main/java/com/telpo/dipperposition/service/IDipperDataAsyncTaskService.java b/src/main/java/com/telpo/dipperposition/service/IDipperDataAsyncTaskService.java
index 708e6df..ec70f9e 100644
--- a/src/main/java/com/telpo/dipperposition/service/IDipperDataAsyncTaskService.java
+++ b/src/main/java/com/telpo/dipperposition/service/IDipperDataAsyncTaskService.java
@@ -23,6 +23,6 @@ public interface IDipperDataAsyncTaskService {
    * 根据IP获取EPH
    *
    */
-  String getAstEPH();
+  byte[] getAstEPH();
 
 }
diff --git a/src/main/java/com/telpo/dipperposition/service/impl/DipperDataAsyncTaskServiceImpl.java b/src/main/java/com/telpo/dipperposition/service/impl/DipperDataAsyncTaskServiceImpl.java
index aec944e..72b3a0a 100644
--- a/src/main/java/com/telpo/dipperposition/service/impl/DipperDataAsyncTaskServiceImpl.java
+++ b/src/main/java/com/telpo/dipperposition/service/impl/DipperDataAsyncTaskServiceImpl.java
@@ -32,7 +32,7 @@ public class DipperDataAsyncTaskServiceImpl implements IDipperDataAsyncTaskServi
     @Override
     public void pullAstEPH() {
         // (1) 发送bds获取星历数据
-        String dipperData = pullEPHFromDipper();
+        byte[] dipperData = pullEPHFromDipper();
 
         // (2) 获取星历数据
         if (dipperData == null) {
@@ -44,7 +44,7 @@ public class DipperDataAsyncTaskServiceImpl implements IDipperDataAsyncTaskServi
     }
 
 
-    private String pullEPHFromDipper() {
+    private byte[] pullEPHFromDipper() {
 
         // 创建Socket客户端实例;
         SocketClient client = new SocketClient(schedulingExecutorConfig.getAstServer(), schedulingExecutorConfig.getEphAstHexPort(),schedulingExecutorConfig.getAstTimeout());
@@ -54,7 +54,7 @@ public class DipperDataAsyncTaskServiceImpl implements IDipperDataAsyncTaskServi
         String hexIn = astTimeCmd + HexConvert.makeChecksum(astTimeCmd);
 
         String ackAckCheckRef = "233E010102000421293C";
-        String sendResult = client.sendCmd(hexIn, ackAckCheckRef);
+        byte[] sendResult = client.sendCmd(hexIn, ackAckCheckRef);
         client.closeConnection();
 
         return sendResult;
@@ -62,7 +62,7 @@ public class DipperDataAsyncTaskServiceImpl implements IDipperDataAsyncTaskServi
 
     @Override
     @Async("asyncServiceExecutor")
-    public String getAstEPH(){
-        return (String)redisUtil.get(DIPPER_DATA_KEY);
+    public byte[] getAstEPH(){
+        return (byte[])redisUtil.get(DIPPER_DATA_KEY);
     }
 }