To further quantify the accuracy of CPR, a test was conducted comparing CPR to the distance measured by a survey-grade total station laser rangefinder. The transponding radio was mounted on a tripod and moved to varying distances away from the originating radio, which was located near the total station. FIGURE 7 shows the distance-measurement results. The blue dots are the baseband distance measurements and the red dots are the unwrapped carrier-phase range distance measurements. The mean distance and scatter within each stationary period were used to evaluate the precision and accuracy of CPR versus the total station rangefinder values.
4) The paragraph beginning with 10^-2 BER has some problems. It falls into the bandwidth coding gain trap, but it should recognize that its describing a link design constained by choices already made. Satellite channel bandwidth and downlink power budgets are typically designed for 10^-11 BER typical, 10^-6 minimum at full bandwidth including coding gain with a 50% rate reduction due to coding, and the raw channel BER is 10^-2 at the unencoded bitrate, and 10^-3 at the coded bit rate. A ground station designer can add antenna gain and transmit power, but the market has expectations based on coded channels.