From 43906f994b6f694b14f93077b5e914579ebe49d3 Mon Sep 17 00:00:00 2001
From: Oliver Jowett <oliver@mutability.co.uk>
Date: Fri, 26 Aug 2016 11:30:46 +0100
Subject: [PATCH] Limit aircraft-relative CPR to 50km.

---
 track.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/track.c b/track.c
index ca51267..79e89a9 100644
--- a/track.c
+++ b/track.c
@@ -293,6 +293,8 @@ static int doLocalCPR(struct aircraft *a, struct modesMessage *mm, uint64_t now,
 
         if (a->pos_nuc < *nuc)
             *nuc = a->pos_nuc;
+
+        range_limit = 50e3;
     } else if (!surface && (Modes.bUserFlags & MODES_USER_LATLON_VALID)) {
         reflat = Modes.fUserLat;
         reflon = Modes.fUserLon;