[hamradio-commits] [gnss-sdr] 57/303: Add TTFF report

[Carles Fernandez]

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carles_fernandez-guest pushed a commit to branch master
in repository gnss-sdr.

commit e445d5d26b9a956f1b79e9db149b006a4ab3be13
Author: Carles Fernandez <carles.fernandez at gmail.com>
Date:   Sat Oct 1 11:58:15 2016 +0200

    Add TTFF report
---
 src/tests/system-tests/ttff_gps_l1.cc | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/src/tests/system-tests/ttff_gps_l1.cc b/src/tests/system-tests/ttff_gps_l1.cc
index e1cc80e..672eceb 100644
--- a/src/tests/system-tests/ttff_gps_l1.cc
+++ b/src/tests/system-tests/ttff_gps_l1.cc
@@ -91,12 +91,9 @@ void receive_msg()
     //        exit(1);
     //    }
 
-    //  msqid = msgget(key, 0644);
-    //while (keep_capturing==1) {
 
     if (msgrcv(msqid, &msg, msgrcv_size, 1, 0) != -1)
         {
-            //jammer=msg.jammer_msg;
             ttff_msg = msg.ttff;
             std::cout << "-----RECEIVED! " << ttff_msg << std::endl;
             //struct tm  tstruct;
@@ -106,6 +103,7 @@ void receive_msg()
             if( (ttff_msg != 0) && (ttff_msg != -1))
                 {
                     TTFF_v.push_back(ttff_msg / (100 * 10)); // Fix this !  averaging_depth * output_rate_ms
+                    std::cout << "Annotate: TTFF = " << ttff_msg / (100 * 10) << std::endl;
                 }
 
             if(ttff_msg != -1)
@@ -121,6 +119,17 @@ void receive_msg()
     return;
 }
 
+void print_TTFF_report(const std::vector<double> & ttff_v)
+{
+    std::vector<double> ttff = ttff_v;
+    double sum = std::accumulate(ttff.begin(), ttff.end(), 0.0);
+    double mean = sum / ttff.size();
+    double sq_sum = std::inner_product(ttff.begin(), ttff.end(), ttff.begin(), 0.0);
+    double stdev = std::sqrt(sq_sum / ttff.size() - mean * mean);
+    std::cout << "TTFF mean: " << mean << " [s]" << std::endl;
+    std::cout << "TTFF stdev: " << stdev << " [s]" << std::endl;
+}
+
 
 TEST(TTFF_GPS_L1_CA_Test, ColdStart)
 {
@@ -287,13 +296,16 @@ TEST(TTFF_GPS_L1_CA_Test, ColdStart)
             // if (pvt_fix) num_valid_measurements = num_valid_measurements + 1;
         }
     std::cout << "BYE " << num_measurements << std::endl;
+
     // Compute min, max, mean, stdev,
     //receive_msg_thread.join();
     // Print TTFF report
+    print_TTFF_report(TTFF_v);
 
 }
 
 
+
 int main(int argc, char **argv)
 {
     std::cout << "Running Time-To-First-Fix test..." << std::endl;

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