％ This program calculates Dilution of PRECISION with respect to a GPS *
％ receiver given its Cartesian ECEF position and the positions of four or *
％ more visible GPS satellites. It is a validation of the DOP algorithm and *
％ contains reference positions for which the DOP results are known. *
The LM35 of National Semiconductors that is used in this project is a PRECISION centigrade temperature sensor, which has an analog output voltage. It has a range of -55潞C to +150潞C and a accuracy of 鹵0.5潞C . The output voltage is 10mV/潞C . The output voltage is converted by the AD convertor of the AT Mega8. The temperature is displayed on an LCD module. In this example the thermometer has a range of 0潞C to 40潞C and a resolution of 0.5潞C. If you want to have a readout in Fahrenheit you can use the LM34.
