In GPS gt320r what is meant by its features:
1.12 parallel channel GPS receiver
This is the first question you need to ask since there are two different interpretations of the answer. One is, any receiver capable of tracking 12 satellites. The second answer is a receiver having dedicated hardware to receive 12 channels
simultaneously, also known as a twelve channel parallel receiver.
2. 4100 simultaneous time-frequency search bins
not familiar with this term, but it related to the speed of satellite acquition
3. -140dBm acquisition sensitivity
4 -150dBm tracking sensitivity
These are both an indication of the receiver sensitivity .... anything below -130dBm is VERY sensitive
its telling you that it needs a signal of at least -140 dBm to be able to acquire a given satellite but once acquired,
the signal can drop another 10dB in strength before it will drop out.
On the freq that GPS uses the noise floor will be somewhere around -150 to -160 dBm
5. 5m CEP accuracy
please explain each point if possible
that's just telling you the positioning accuracy, you wont get better than a positioning of 5m
with the GPS gear I service, we get down to 2 - 3 mm ( millimetres) of accuracy
cheers
Dave