diff --git a/uhd_cpp/uhd_the_ark.cpp b/uhd_cpp/uhd_the_ark.cpp
index 5b6d99e761b9b85221dfd74df6819647cb4a9d37..5c9d98e609a32f83283094b0c8bb952e235c88a0 100644
--- a/uhd_cpp/uhd_the_ark.cpp
+++ b/uhd_cpp/uhd_the_ark.cpp
@@ -47,7 +47,7 @@ struct tag_channelOptions{
 	string wirefmt;			//内部类型 (sc8 or sc16)，是片上处理的类型
 	vector<size_t> channels {0};//通道号,可以设置0,1之类的。默认subdev时，0=A:A，1=A:B，subdev被修改，则采取修改后的编号
 	size_t spb	=	10000;			//缓冲大小，太小会丢包，太大会超时
-	double rate = 2.5e6;		//采样率，单位Hz
+	double rate = 200e3;		//采样率，单位Hz
 	double freq = 1.0e9;			//射频频率，单位Hz
 	double gain = 20;				//射频增益，单位dB
 	double bw   = rate;				//滤波带宽，默认为采样窗口
@@ -79,7 +79,7 @@ int UHD_SAFE_MAIN(int /*argc*/, char* /*argv*/[])
 	//3.配置发射
 	tag_channelOptions tx_op;
 	tx_op.freq = 200e6;
-	tx_op.bw = tx_op.rate / modraten / 2;
+	tx_op.bw = tx_op.rate;
 	tx_op.gain=70;
 	tx_op.channels[0] = 0;
 	//3.1子设备配置（默认）,一般不动它。
@@ -112,7 +112,7 @@ int UHD_SAFE_MAIN(int /*argc*/, char* /*argv*/[])
 
 	//4.配置接收
 	tag_channelOptions rx_op;
-	rx_op.bw = rx_op.rate / modraten / 2;
+	rx_op.bw = rx_op.rate;
 	rx_op.freq = 200e6;
 	rx_op.gain = 50;
 	rx_op.channels[0] = 0;
@@ -265,8 +265,10 @@ void do_io(
 	//主线程不断打印状态
 	while (!stop_signal_called)
 	{
-		//cerr<<"P " << gene_count<<" TX "<< tx_count<< " RX "<< rx_count << "D "<< deal_count<< "    \r";
-		std::this_thread::sleep_for(std::chrono::milliseconds(100));
+		cerr<<"\nProduce " << gene_count<<" TX "<< tx_count<< " RX "<< rx_count << " Deal "<< deal_count<<
+			  " Delay = "<<rx_count - deal_count<<
+			  "    \n";
+		std::this_thread::sleep_for(std::chrono::milliseconds(1000));
 
 		if (rx_count >= 4*1024*1024)
 			stop_signal_called = true;
@@ -280,7 +282,7 @@ void do_io(
 
 
 static const int amp = 1024;
-static const int spread_ratio = 128;
+static const int spread_ratio = 200;
 static const size_t wav_size = spread_ratio*modraten;
 static short wav_spread[2][wav_size][2];
 static float wav_xorr[2][wav_size][2];
@@ -382,7 +384,7 @@ void dealer()
 	unsigned long long next_test = wav_size;
 	const unsigned int half_sz = wav_size/2;
 	short (*pBufRx)[2] = rx_buf_ptr.get();
-	float (* ampwin)[2] = new float[wav_size][2];
+	double (* ampwin)[2] = new double[wav_size][2];
 	while (!stop_signal_called)
 	{
 		if (deal_count + wav_size >= rx_count || rx_count < wav_size )
@@ -396,20 +398,20 @@ void dealer()
 			++deal_count;
 			continue;
 		}
-		float cross[2][2] = {{0,0},{0,0}};
+		double cross[2][2] = {{0,0},{0,0}};
 		unsigned long long start_x = deal_count - wav_size;
 		//xorr
 #pragma omp simd
 		for (size_t i=0;i<wav_size;++i)
 		{
-			int xb = (start_x + i) % rxbuf_points;
-			cross[0][0] += (pBufRx[xb][0] * wav_xorr[0][i][0] - pBufRx[xb][1] * wav_xorr[0][i][1])/32768.0;
-			cross[0][1] += (pBufRx[xb][0] * wav_xorr[0][i][1] + pBufRx[xb][1] * wav_xorr[0][i][0])/32768.0;
-			cross[1][0] += (pBufRx[xb][0] * wav_xorr[1][i][0] - pBufRx[xb][1] * wav_xorr[1][i][1])/32768.0;
-			cross[1][1] += (pBufRx[xb][0] * wav_xorr[1][i][1] + pBufRx[xb][1] * wav_xorr[1][i][0])/32768.0;
+			const int xb = (start_x + i) % rxbuf_points;
+			cross[0][0] += (pBufRx[xb][0] * wav_xorr[0][i][0] - pBufRx[xb][1] * wav_xorr[0][i][1]);
+			cross[0][1] += (pBufRx[xb][0] * wav_xorr[0][i][1] + pBufRx[xb][1] * wav_xorr[0][i][0]);
+			cross[1][0] += (pBufRx[xb][0] * wav_xorr[1][i][0] - pBufRx[xb][1] * wav_xorr[1][i][1]);
+			cross[1][1] += (pBufRx[xb][0] * wav_xorr[1][i][1] + pBufRx[xb][1] * wav_xorr[1][i][0]);
 		}
-		ampwin[deal_count % wav_size][0] = cross[0][0]*cross[0][0]+ cross[0][1]*cross[0][1];
-		ampwin[deal_count % wav_size][1] = cross[1][0]*cross[1][0]+ cross[1][1]*cross[1][1];
+		ampwin[deal_count % wav_size][0] = cross[0][0]/32768.0*cross[0][0]/32768.0+ cross[0][1]/32768.0*cross[0][1]/32768.0;
+		ampwin[deal_count % wav_size][1] = cross[1][0]/32768.0*cross[1][0]/32768.0+ cross[1][1]/32768.0*cross[1][1]/32768.0;
 
 		bool best0 = true, best1=true;